{"id":630,"date":"2021-05-05T17:35:32","date_gmt":"2021-05-05T17:35:32","guid":{"rendered":"https:\/\/www.sydspost.nl\/?p=630"},"modified":"2026-03-31T19:40:27","modified_gmt":"2026-03-31T19:40:27","slug":"slimme-watermeter-2","status":"publish","type":"post","link":"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/","title":{"rendered":"Slimme watermeter"},"content":{"rendered":"\n<p><em>Noot 31-3-2026: Tutorial ge\u00fcpdatet, Google Data Studio rapportages vervangen door Domoticz Energy Dashboard<\/em><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Use cases:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Waterverbruik per minuut weergeven in Domoticz Energy Dashboard<\/span><\/li>\n\n\n\n<li>Watermeter stand weergeven in Domoticz<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Links:<\/span><\/p>\n\n\n\n<p><a href=\"https:\/\/www.letscontrolit.com\/wiki\/index.php\/LJ12A3\">https:\/\/www.letscontrolit.com\/wiki\/index.php\/LJ12A3<\/a><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Onderdelen:<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Artikel<\/span><\/td><td><span style=\"font-weight: 400;\">Aantal<\/span><\/td><td><span style=\"font-weight: 400;\">Prijs<\/span><\/td><td><span style=\"font-weight: 400;\">Webshop<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Wemos D1 mini incl. pinheaders<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">1,67<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/4000420770002.html?spm=a2g0o.productlist.0.0.6f742a6cO1p4cd&amp;algo_pvid=95a7c1df-eeb4-4b36-88ea-f6453859b56d&amp;algo_expid=95a7c1df-eeb4-4b36-88ea-f6453859b56d-0&amp;btsid=2100bb4c16201608020188300eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Wemos D1 DC Powershield<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">1,18<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/32957048364.html?spm=a2g0o.productlist.0.0.67e84f59WqBa8F&amp;algo_pvid=dfbf5ee0-9b07-49cd-ae78-1d277aabccee&amp;algo_expid=dfbf5ee0-9b07-49cd-ae78-1d277aabccee-0&amp;btsid=2100bb4c16201609747583005eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">BC547B transistor<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,03<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/4001206202683.html?spm=a2g0o.productlist.0.0.1c7f331dUfOO5Z&amp;algo_pvid=0108ca1f-c130-44dd-a9cf-1e772422fe9f&amp;algo_expid=0108ca1f-c130-44dd-a9cf-1e772422fe9f-2&amp;btsid=2100bb4c16201610888604786eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Weerstand 10K Ohm<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,01<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/32952657927.html?spm=a2g0o.productlist.0.0.28294e62FnBpWg&amp;algo_pvid=a4195fca-cc0c-4de4-9f34-0f0b6b9fd11f&amp;algo_expid=a4195fca-cc0c-4de4-9f34-0f0b6b9fd11f-3&amp;btsid=2100bb4c16201611745136451eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Weerstand 1K Ohm<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,01<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/32952657927.html?spm=a2g0o.productlist.0.0.28294e62FnBpWg&amp;algo_pvid=a4195fca-cc0c-4de4-9f34-0f0b6b9fd11f&amp;algo_expid=a4195fca-cc0c-4de4-9f34-0f0b6b9fd11f-3&amp;btsid=2100bb4c16201611745136451eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Diode 1N4148<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,01<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/32660088529.html?spm=a2g0o.productlist.0.0.6bf95437mgoHOk&amp;algo_pvid=1ee93c23-10a4-4bd1-bb8b-7683641e54be&amp;algo_expid=1ee93c23-10a4-4bd1-bb8b-7683641e54be-1&amp;btsid=2100bb4c16201613130441298eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Transformator 12V DC<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">1,33<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/33042352760.html?spm=a2g0o.productlist.0.0.44eb7e4090BxI9&amp;algo_pvid=556edd62-f4f4-4690-8838-1716927749e4&amp;algo_expid=556edd62-f4f4-4690-8838-1716927749e4-1&amp;btsid=2100bb4c16201616205725993eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">PCB printplaat 3&#215;4 cm<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,13<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/4001135662056.html?spm=a2g0o.productlist.0.0.32c5375e7JhEZK&amp;algo_pvid=840da879-1361-4510-84a6-e1b8a255054a&amp;algo_expid=840da879-1361-4510-84a6-e1b8a255054a-10&amp;btsid=2100bb4c16201614400002977eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Schroefterminal 3-voudig<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,36<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/1005001677869988.html?spm=a2g0o.productlist.0.0.5a5f33a1IwM4CP&amp;algo_pvid=null&amp;algo_expid=null&amp;btsid=2100bb4c16201615444894858eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">(Dupont) kabeltjes male-female<\/span><\/td><td><span style=\"font-weight: 400;\">3<\/span><\/td><td><span style=\"font-weight: 400;\">0,06<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/1005001705264902.html?spm=a2g0o.productlist.0.0.16d8400fXmUhmO&amp;algo_pvid=8b0f02ed-c072-4def-8d09-08951ec338ef&amp;algo_expid=8b0f02ed-c072-4def-8d09-08951ec338ef-1&amp;btsid=2100bb4c16201616874166990eede7&amp;ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td>Optioneel: <span style=\"font-weight: 400;\">Behuizing<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">1,13<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/4000748056187.html?spm=a2g0s.9042311.0.0.27424c4diLEoqo\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">LJ12A3-4-Z\/Bx Inductieve Proximity Sensor<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">2,26<\/span><\/td><td><a href=\"https:\/\/nl.aliexpress.com\/item\/1005002301398479.html?spm=a2g0s.9042311.0.0.27424c4dNZz5ay\"><span style=\"font-weight: 400;\">Aliexpress<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Tie-wraps 368mm<\/span><\/td><td><span style=\"font-weight: 400;\">3<\/span><\/td><td><span style=\"font-weight: 400;\">0,40<\/span><\/td><td><a href=\"https:\/\/www.mijnijzerwaren.nl\/bevestigingsmateriaal-en-verankering\/4167-hoekanker-z-ril-07225-125x125mm-46x25mm-8714318040574.html\"><span style=\"font-weight: 400;\">MijnIJzerwaren.nl<\/span><\/a><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Hoekanker zonder ril 125X125mm 46X2,5mm<\/span><\/td><td><span style=\"font-weight: 400;\">1<\/span><\/td><td><span style=\"font-weight: 400;\">0,85<\/span><\/td><td><a href=\"https:\/\/www.mijnijzerwaren.nl\/bevestigingsmateriaal-en-verankering\/4167-hoekanker-z-ril-07225-125x125mm-46x25mm-8714318040574.html\"><span style=\"font-weight: 400;\">MijnIJzerwaren.nl<\/span><\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Benodigdheden<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Soldeerbout + tin<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Kniptangetje<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Boormachine + 4mm boortje<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Stanleymes<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Flex of IJzerzaag<\/span><\/li>\n\n\n\n<li>Optioneel: 3D printer<\/li>\n<\/ul>\n\n\n\n<p>Reeds up-and-running<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MQTT-broker<\/li>\n\n\n\n<li>Node-Red<\/li>\n\n\n\n<li>ESP Easy Flasher incl. recente Esp-binaries<\/li>\n\n\n\n<li>evt. Domoticz<\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">Schema:<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"253\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/pasted-image-0-300x253.png\" alt=\"\" class=\"wp-image-637\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/pasted-image-0-300x253.png 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/pasted-image-0-768x647.png 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/pasted-image-0.png 780w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"270\" height=\"270\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/unnamed-13.png\" alt=\"\" class=\"wp-image-638\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/unnamed-13.png 270w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/unnamed-13-150x150.png 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/unnamed-13-50x50.png 50w\" sizes=\"auto, (max-width: 270px) 100vw, 270px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Werkwijze:<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Op de Wemos D1 mini 2 male 8-voudige pinheaders gesoldeerd. Tevens op de VCC en GND van de Wemos DC Powershield 2 enkelvoudige male pinheaders gesoldeerd. Vervolgens van 2 male 8-voudige pinheaders de pins met een tangetje eruit getrokken, en de plastic pinhouders op de pinheaders van de Wemos D1 mini geschoven zodat er wat extra ruimte komt tussen de Wemos D1 mini en het powershield. Vervolgens het powershield op de pinheaders van de Wemos D1 mini gesoldeerd. Dus Wemos D1 beneden, en powershield daar boven op.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_141418\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" data-id=\"644\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-1024x512.jpg\" alt=\"\" class=\"wp-image-644\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-1024x512.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-300x150.jpg 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-768x384.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-1536x768.jpg 1536w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141418-2048x1024.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_141411\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" data-id=\"643\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-1024x512.jpg\" alt=\"\" class=\"wp-image-643\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-1024x512.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-300x150.jpg 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-768x384.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-1536x768.jpg 1536w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_141411-2048x1024.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Op een stukje PCB van ongeveer 3 bij 4 cm een 3 voudige female pinheader gesoldeerd, zodat de verbindingen tussen de Wemos D1 pack en het printplaatje met behulp van 3 dupont kabels gemaakt kan worden. Vervolgens de 1k en 10k ohm weerstanden, de 1N4148 diode en de BC547B transistor conform bovenstaand schema op de printplaat gesoldeerd, dit alles uitkomende op een 3-voudige schroefterminal. Daarna de female connector van een zwart dupont kabeltje afgeknipt, gestript en op D5 (GPIO-14) van de Wemos D1 mini gesoldeerd. Tevens een blauwe dupont kabel op de pinheader van 12v GND van het powershield geschoven, en een bruine dupont kabel op de pinheader van de 12v VCC van het powershield. Tot slot de male zijdes van de 3 dupont kabels aangesloten op de female pinheader van het printplaatje.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"1024\" data-id=\"2131\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-512x1024.jpg\" alt=\"\" class=\"wp-image-2131\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-512x1024.jpg 512w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-150x300.jpg 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-768x1536.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-1024x2048.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20220208_214136-scaled.jpg 1280w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"476\" height=\"747\" data-id=\"2134\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2022\/02\/image-34.png\" alt=\"\" class=\"wp-image-2134\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2022\/02\/image-34.png 476w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2022\/02\/image-34-191x300.png 191w\" sizes=\"auto, (max-width: 476px) 100vw, 476px\" \/><\/figure>\n<\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Vervolgens de Wemos pack en het printplaatje in de behuizing geplaatst. De behuizing heb ik geprint met mijn 3D printer. De 3D printfiles kun je hier downloaden.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>File<\/td><td>Download URL<\/td><\/tr><tr><td>Body<\/td><td><a href=\"https:\/\/drive.google.com\/file\/d\/1aCPEnqlAvVYCOhtTO0PQDwlNUTcWQAq2\/view?usp=sharing\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/drive.google.com\/file\/d\/1aCPEnqlAvVYCOhtTO0PQDwlNUTcWQAq2\/view?usp=sharing<\/a><\/td><\/tr><tr><td>Cover<\/td><td><a href=\"https:\/\/drive.google.com\/file\/d\/1gFAkQLfIEfSzWzpK8gUlfwLoJnCHTgSy\/view?usp=sharing\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/drive.google.com\/file\/d\/1gFAkQLfIEfSzWzpK8gUlfwLoJnCHTgSy\/view?usp=sharing<\/a><\/td><\/tr><tr><td>CAD-file<\/td><td><a href=\"https:\/\/drive.google.com\/file\/d\/1fs2r4mTijNxRXvyiJh_B_a56ZDn56Wm9\/view?usp=sharing\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/drive.google.com\/file\/d\/1fs2r4mTijNxRXvyiJh_B_a56ZDn56Wm9\/view?usp=sharing<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>De Wemos Pack klikt vast in de uitsparingen, vervolgens kun je de 3,5mm powerjack van het shield door de uitsparing schuiven. In het printplaatje twee 2,5mm gaatjes geboord, en de printplaat met kleine zelftappende schroefjes vastgezet. <span style=\"font-weight: 400;\">De kabel van de sensor doorgevoerd, met een tie-wrap geborgd, en vastgeschroefd in de schroefterminal volgens onderstaand schema:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Blauw: Gnd (1 in schema)<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Zwart: Data (2 in schema)<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Bruin: VCC (3 in schema)<\/span><\/li>\n<\/ul>\n\n\n\n<p>Tot slot de cover met twee schroefjes op de behuizing vastgezet.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Met een flex het hoekanker afgekort naar ongeveer 70 bij 40 mm, en in het deel van 40mm een inkeping gemaakt van 13 mm breed bij ongeveer 25mm. Het hoekanker licht bij gebogen tot een hoek van ongeveer 95-100 graden. De sensor met de meegeleverde moeren en sluitringen in de inkeping vastgezet, en het lange deel van 70mm met twee tie-wraps vastgezet op de watermeter.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_140059\/\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"1024\" data-id=\"639\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-512x1024.jpg\" alt=\"\" class=\"wp-image-639\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-512x1024.jpg 512w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-150x300.jpg 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-768x1536.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-1024x2048.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140059-scaled.jpg 1280w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_140652\/\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"1024\" data-id=\"640\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-512x1024.jpg\" alt=\"\" class=\"wp-image-640\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-512x1024.jpg 512w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-150x300.jpg 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-768x1536.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-1024x2048.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-scaled.jpg 1280w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_151849\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" data-id=\"646\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-1024x512.jpg\" alt=\"\" class=\"wp-image-646\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-1024x512.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-300x150.jpg 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-768x384.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-1536x768.jpg 1536w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_151849-2048x1024.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Wemos D1 flashen:<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">De Wemos D1 geflashed met ESPMega m.b.v. ESP Easy Flasher:<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"265\" height=\"300\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel-265x300.jpg\" alt=\"\" class=\"wp-image-631\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel-265x300.jpg 265w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel.jpg 605w\" sizes=\"auto, (max-width: 265px) 100vw, 265px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">EspEasy geconfigureerd:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Config tab<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"300\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel1-184x300.jpg\" alt=\"\" class=\"wp-image-632\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel1-184x300.jpg 184w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel1.jpg 498w\" sizes=\"auto, (max-width: 184px) 100vw, 184px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">(Het automatisch configureren van de WiFi-instellingen werkt bij mij niet altijd met ESP Easy flasher, in dat geval start de Wemos na het flashen op in AP mode en kun je op deze wijze ESPEasy alsnog connecteren aan de WiFi)<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Toelichting<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Attribuut<\/span><\/td><td><span style=\"font-weight: 400;\">Waarde<\/span><\/td><td><span style=\"font-weight: 400;\">Doel<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Unit Name<\/span><\/td><td><span style=\"font-weight: 400;\">Watermeter<\/span><\/td><td><span style=\"font-weight: 400;\">Logische naam<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Unit number<\/span><\/td><td><span style=\"font-weight: 400;\">6<\/span><\/td><td><span style=\"font-weight: 400;\">Uniek nummer !<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Append unitnumer to Unit Name<\/span><\/td><td><span style=\"font-weight: 400;\">uitgevinkt<\/span><\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Controller tab, MQTT controller toegevoegd<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"168\" height=\"300\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel2-168x300.jpg\" alt=\"\" class=\"wp-image-633\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel2-168x300.jpg 168w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel2.jpg 493w\" sizes=\"auto, (max-width: 168px) 100vw, 168px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Toelichting<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Attribuut<\/span><\/td><td><span style=\"font-weight: 400;\">Waarde<\/span><\/td><td><span style=\"font-weight: 400;\">Doel<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Protocol<\/span><\/td><td><span style=\"font-weight: 400;\">Domoticz MQTT<\/span><\/td><td>&nbsp;<\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Controller IP<\/span><\/td><td><span style=\"font-weight: 400;\">&lt;ip adress MQTT server&gt;<\/span><\/td><td>&nbsp;<\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Enabled<\/span><\/td><td><span style=\"font-weight: 400;\">aangevinkt<\/span><\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Devices tab, Pulse counter toegevoegd<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"823\" height=\"907\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/2E4DCAAD-540C-4276-85DA-24D327DCA22B.png\" alt=\"\" class=\"wp-image-4087\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/2E4DCAAD-540C-4276-85DA-24D327DCA22B.png 823w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/2E4DCAAD-540C-4276-85DA-24D327DCA22B-272x300.png 272w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/2E4DCAAD-540C-4276-85DA-24D327DCA22B-768x846.png 768w\" sizes=\"auto, (max-width: 823px) 100vw, 823px\" \/><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Toelichting<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Attribuut<\/span><\/td><td><span style=\"font-weight: 400;\">Waarde<\/span><\/td><td><span style=\"font-weight: 400;\">Doel<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Device<\/span><\/td><td><span style=\"font-weight: 400;\">Generic Pulse Counter<\/span><\/td><td><span style=\"font-weight: 400;\">Aantal pulsen tellen van wieltje in watermeter<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Name<\/span><\/td><td><span style=\"font-weight: 400;\">Watermeter<\/span><\/td><td><span style=\"font-weight: 400;\">Logische naam<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Enabled<\/span><\/td><td><span style=\"font-weight: 400;\">Aangevinkt<\/span><\/td><td>&nbsp;<\/td><\/tr><tr><td><span style=\"font-weight: 400;\">GPIO<\/span><\/td><td><span style=\"font-weight: 400;\">GPIO-14 (D5)<\/span><\/td><td><span style=\"font-weight: 400;\">Zie ook werkwijze<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Mode type<\/span><\/td><td><span style=\"font-weight: 400;\">Falling<\/span><\/td><td><span style=\"font-weight: 400;\">Zodra de sensor een puls meet wordt het voltage op D4 naar 0 gebracht, dit wordt geteld.<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Send to controller<\/span><\/td><td><span style=\"font-weight: 400;\">Aangevinkt<\/span><\/td><td><span style=\"font-weight: 400;\">Zend waarden naar MQTT (en Domoticz)<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">IDX<\/span><\/td><td><span style=\"font-weight: 400;\">IDX van device in Domoticz<\/span><\/td><td><span style=\"font-weight: 400;\">Zie volgende stap<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Interval<\/span><\/td><td><span style=\"font-weight: 400;\">60<\/span><\/td><td><span style=\"font-weight: 400;\">Iedere minuut wordt er waarneming gedaan<\/span><\/td><\/tr><tr><td>Values #1<\/td><td>Name=&#8221;Count&#8221;<br>Formula=&#8221;%value%&#8221;<\/td><td>Formule set numerieke waarde van Count om naar een string t.b.v. svalue<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Domoticz:<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Tweetal virtuele devices aangemaakt vanuit de dummy hardware \u2018Virtuele devices\u2019 op het hardware tab.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"538\" height=\"313\" data-id=\"4088\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/32279F6D-5D65-419A-B82C-B4F1BA98AA70.png\" alt=\"\" class=\"wp-image-4088\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/32279F6D-5D65-419A-B82C-B4F1BA98AA70.png 538w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/32279F6D-5D65-419A-B82C-B4F1BA98AA70-300x175.png 300w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"537\" height=\"318\" data-id=\"4089\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/13D62D1D-5586-4C73-B53F-9967822AC255.png\" alt=\"\" class=\"wp-image-4089\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/13D62D1D-5586-4C73-B53F-9967822AC255.png 537w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/13D62D1D-5586-4C73-B53F-9967822AC255-300x178.png 300w\" sizes=\"auto, (max-width: 537px) 100vw, 537px\" \/><\/figure>\n<\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Toelichting<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Naam<\/span><\/td><td><span style=\"font-weight: 400;\">Sensor Type<\/span><\/td><td><span style=\"font-weight: 400;\">Doel<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Watermeter<\/span><\/td><td><span style=\"font-weight: 400;\">Teller<\/span><\/td><td><span style=\"font-weight: 400;\">Opslaan meterstand<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Waterflow<\/span><\/td><td><span style=\"font-weight: 400;\">Waterflow<\/span><\/td><td>\u00a0Waterverbruik per minuut<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Ga vervolgens naar het tabblad apparaten en zoek de net aangemaakte device sop en noteer het IDX nummers. Neem het IDX nummer van het Waterflow device over in de ESP configuratie van de vorige stap.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">MariaDB:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">M.b.v. MySQL workbench tabel \u2018Watermeter\u2019 aangemaakt:<\/span><\/li>\n<\/ul>\n\n\n\n<p><code>CREATE TABLE `watermeter` (<br>\n`sample datetime` datetime NOT NULL,<br>\n`pulses` int(11) DEFAULT NULL,<br>\n`liters` float(10,3) DEFAULT NULL,<br>\n`meterstand` float(10,3) DEFAULT NULL,<br>\n`type` char(1) DEFAULT 'S' COMMENT 'S = Sensor\\nM = Manual',<br>\nPRIMARY KEY (`sample datetime`)<br>\n<\/code><\/p>\n\n\n\n<p>Log in op je Raspberry pi als root, start daar mysql:<\/p>\n\n\n\n<p><code>mysql -p<\/code><\/p>\n\n\n\n<p>en voer onderstaand commando uit<\/p>\n\n\n\n<p><code>grant select on energy.watermeter to 'googledata'@'%';<\/code><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Node Red Flow gemaakt:<\/span><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><span style=\"font-weight: 400;\">Node<\/span><\/td><td><span style=\"font-weight: 400;\">Werking<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Run Once<\/span><\/td><td><span style=\"font-weight: 400;\">Bij het initieel starten van de flow wordt de laatst geregistreerde meterstand opgehaald uit de database<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Get last Meterstand<\/span><\/td><td><span style=\"font-weight: 400;\">Genereer select-statement om laatst geregistreerde meterstand uit database uit te lezen<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Database<\/span><\/td><td><span style=\"font-weight: 400;\">Connectie naar MariaDB database, schema Energy<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Set Previous Meterstand<\/span><\/td><td><span style=\"font-weight: 400;\">Zet opgehaalde meterstand in flow context<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">MQTT-in<\/span><\/td><td><span style=\"font-weight: 400;\">Luister naar topic domoticz\/in<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Watermeter<\/span><\/td><td><span style=\"font-weight: 400;\">Filter messages van IDX 224 (Watermeter) uit<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Build SQL<\/span><\/td><td><span style=\"font-weight: 400;\">Genereert insert sql-statement op basis van svalue uit MQTT-message, genereert payload op basis van svalue, en update vorige meterstand it flow context<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">Database<\/span><\/td><td><span style=\"font-weight: 400;\">Insert SQL-statement wordt verwerkt in de database<\/span><\/td><\/tr><tr><td><span style=\"font-weight: 400;\">domoticz\/in<\/span><\/td><td><span style=\"font-weight: 400;\">Stuur msg.payload naar domoticz\/in MQTT topic<\/span><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Export<\/span><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code><code>&#91;{\"id\":\"ab377de9.7ba81\",\"type\":\"tab\",\"label\":\"Watermeter\",\"disabled\":false,\"info\":\"\"},{\"id\":\"3c3d3f90.5ee9b\",\"type\":\"mqtt in\",\"z\":\"ab377de9.7ba81\",\"name\":\"MQTT in\",\"topic\":\"domoticz\/in\",\"qos\":\"2\",\"datatype\":\"auto\",\"broker\":\"551f9d83.b30b54\",\"inputs\":0,\"x\":120,\"y\":160,\"wires\":&#91;&#91;\"2e0c706a.950dc\"]]},{\"id\":\"14d98f0d.0290f1\",\"type\":\"function\",\"z\":\"ab377de9.7ba81\",\"name\":\"Build SQL\",\"func\":\"\/\/ {\\\"idx\\\":224,\\\"RSSI\\\":10,\\\"Battery\\\":38,\\\"nvalue\\\":0,\\\"svalue\\\":\\\"27\\\"}\\n\\nvar pulses = parseInt(msg.payload.split(',')&#91;4].split(':')&#91;1].replace(\\\"}\\\",\\\"\\\").replace(\/\\\"\/g,\\\"\\\"));\\nvar liters = pulses * 1; \/\/ verander 1 in kalibratieeenheid\\nvar meterstand = flow.get(\\\"meterstand\\\") + liters\/1000; \/\/ meterstand is in kuubs\\nvar sql = \\\"\\\";\\n\\nif ( pulses > 0) {\\n sql = \\\"insert into watermeter (<code>sample datetime<\/code>, <code>pulses<\/code>, <code>liters<\/code>, <code>meterstand<\/code>) values (now(),\\\";\\n sql = sql + pulses + \\\", \\\" + liters + \\\", \\\" + meterstand + \\\");\\\";\\n\\n flow.set(\\\"meterstand\\\", meterstand);\\n}\\nelse {\\n sql = \\\"SELECT 1 FROM DUAL;\\\";\\n}\\n\\nmsg.topic=sql;\\nmeterstand=Math.trunc(meterstand*1000);\\nmsg.payload='{\\\"command\\\": \\\"udevice\\\", \\\"idx\\\":463,\\\"RSSI\\\":10,\\\"Battery\\\":100,\\\"nvalue\\\": 0,\\\"svalue\\\":\\\"' + meterstand.toString() + '\\\"}'\\n\\nreturn msg;\",\"outputs\":1,\"timeout\":\"\",\"noerr\":0,\"initialize\":\"\",\"finalize\":\"\",\"libs\":&#91;],\"x\":600,\"y\":160,\"wires\":&#91;&#91;\"38c6fe1d.3001e2\",\"a01eecca9fa604fa\"]]},{\"id\":\"38c6fe1d.3001e2\",\"type\":\"mysql\",\"z\":\"ab377de9.7ba81\",\"mydb\":\"aeef4ca1.e0b84\",\"name\":\"Database\",\"x\":800,\"y\":160,\"wires\":&#91;&#91;]]},{\"id\":\"2e0c706a.950dc\",\"type\":\"switch\",\"z\":\"ab377de9.7ba81\",\"name\":\"Watermeter\",\"property\":\"payload\",\"propertyType\":\"msg\",\"rules\":&#91;{\"t\":\"cont\",\"v\":\"\\\"idx\\\":224\",\"vt\":\"str\"}],\"checkall\":\"true\",\"repair\":false,\"outputs\":1,\"x\":350,\"y\":160,\"wires\":&#91;&#91;\"14d98f0d.0290f1\"]]},{\"id\":\"46c5a4a0.d77dcc\",\"type\":\"function\",\"z\":\"ab377de9.7ba81\",\"name\":\"Get last Meterstand\",\"func\":\"var sql = \\\"SELECT * FROM watermeter where <code>sample datetime<\/code> = (select max(<code>sample datetime<\/code>) from watermeter);\\\"\\n\\nmsg.topic=sql;\\n\\nreturn msg;\",\"outputs\":1,\"noerr\":0,\"initialize\":\"\",\"finalize\":\"\",\"x\":370,\"y\":60,\"wires\":&#91;&#91;\"becc17ac.4d2208\"]]},{\"id\":\"becc17ac.4d2208\",\"type\":\"mysql\",\"z\":\"ab377de9.7ba81\",\"mydb\":\"aeef4ca1.e0b84\",\"name\":\"Database\",\"x\":600,\"y\":60,\"wires\":&#91;&#91;\"81ae8928.39dbd8\"]]},{\"id\":\"acbf52a9.c07bc\",\"type\":\"inject\",\"z\":\"ab377de9.7ba81\",\"name\":\"Run once\",\"props\":&#91;{\"p\":\"payload\"},{\"p\":\"topic\",\"vt\":\"str\"}],\"repeat\":\"\",\"crontab\":\"\",\"once\":true,\"onceDelay\":0.1,\"topic\":\"\",\"payload\":\"\",\"payloadType\":\"date\",\"x\":140,\"y\":60,\"wires\":&#91;&#91;\"46c5a4a0.d77dcc\"]]},{\"id\":\"81ae8928.39dbd8\",\"type\":\"function\",\"z\":\"ab377de9.7ba81\",\"name\":\"Set previous Meterstand\",\"func\":\"flow.set(\\\"meterstand\\\", msg.payload&#91;0]&#91;\\\"meterstand\\\"]);\\n\\n\/\/ node.warn(msg.payload&#91;0]&#91;\\\"meterstand\\\"]);\\n\\nreturn msg;\",\"outputs\":1,\"noerr\":0,\"initialize\":\"\",\"finalize\":\"\",\"x\":850,\"y\":60,\"wires\":&#91;&#91;]]},{\"id\":\"a01eecca9fa604fa\",\"type\":\"mqtt out\",\"z\":\"ab377de9.7ba81\",\"name\":\"\",\"topic\":\"domoticz\/in\",\"qos\":\"\",\"retain\":\"\",\"respTopic\":\"\",\"contentType\":\"\",\"userProps\":\"\",\"correl\":\"\",\"expiry\":\"\",\"broker\":\"51525e54.17f38\",\"x\":810,\"y\":220,\"wires\":&#91;]},{\"id\":\"551f9d83.b30b54\",\"type\":\"mqtt-broker\",\"name\":\"pi\",\"broker\":\"192.168.2.29\",\"port\":\"1883\",\"clientid\":\"\",\"autoConnect\":true,\"usetls\":false,\"compatmode\":false,\"protocolVersion\":4,\"keepalive\":\"60\",\"cleansession\":true,\"autoUnsubscribe\":true,\"birthTopic\":\"\",\"birthQos\":\"0\",\"birthPayload\":\"\",\"closeTopic\":\"\",\"closeQos\":\"0\",\"closePayload\":\"\",\"willTopic\":\"\",\"willQos\":\"0\",\"willPayload\":\"\"},{\"id\":\"aeef4ca1.e0b84\",\"type\":\"MySQLdatabase\",\"name\":\"mysql\",\"host\":\"localhost\",\"port\":\"3306\",\"db\":\"energy\",\"tz\":\"\",\"charset\":\"UTF8\"},{\"id\":\"51525e54.17f38\",\"type\":\"mqtt-broker\",\"name\":\"pi\",\"broker\":\"192.168.2.29\",\"port\":\"1883\",\"clientid\":\"\",\"usetls\":false,\"compatmode\":false,\"protocolVersion\":4,\"keepalive\":\"60\",\"cleansession\":true,\"birthTopic\":\"\",\"birthQos\":\"0\",\"birthPayload\":\"\",\"closeTopic\":\"\",\"closeQos\":\"0\",\"closePayload\":\"\",\"willTopic\":\"\",\"willQos\":\"0\",\"willPayload\":\"\"}]<\/code><\/code><\/pre>\n\n\n\n<p>Sensor afstellen<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"275\" height=\"183\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/images-1.jpg\" alt=\"\" class=\"wp-image-649\"\/><\/figure>\n<\/div>\n\n\n<p>Op het rode wieltje (links onderin) zit een stukje metaal, dit gebruik ik om te meten. Een inductieve-sensor werkt op basis van magnetisme. Iedere keer dat het stukje metaal op het rode wieltje voorbij de sensor komt, telt hij een puls. Plaats het bewerkte hoekanker, en de hierop bevestigde sensor, zo dat hij bij iedere draaiing van het rode wieltje een meting verricht. Dit zie je aan het rode ledje bovenop de sensor. Zorg ervoor dat de sensor op het glas van de watermeter rust, anders meet hij niet goed.<\/p>\n\n\n\n<p>Energie Dashbord geconfigureerd:<\/p>\n\n\n\n<p>In Domoticz via het menu Instellingen -> Energie dashboard een Vrije Widget geconfigureerd:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"898\" height=\"143\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/F5D53372-0511-4E62-A6F4-2845E4E071CB.png\" alt=\"\" class=\"wp-image-4090\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/F5D53372-0511-4E62-A6F4-2845E4E071CB.png 898w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/F5D53372-0511-4E62-A6F4-2845E4E071CB-300x48.png 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/F5D53372-0511-4E62-A6F4-2845E4E071CB-768x122.png 768w\" sizes=\"auto, (max-width: 898px) 100vw, 898px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Attribuut<\/td><td>Waarde<\/td><td>Doel<\/td><\/tr><tr><td>Vrije widget #<\/td><td>Waterflow<\/td><td>Selecteer het eerder aangemaakte virtuele device Waterflow<\/td><\/tr><tr><td>Veld<\/td><td>Data<\/td><td>Bevat het waterverbruik in liters per minuut<\/td><\/tr><tr><td>Icoon<\/td><td>Wave<\/td><td>Lijkt op stromend water<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Eindresultaat:<\/p>\n\n\n\n<p>Het eindresultaat ziet er als volgt uit:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"545\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/DA582576-6C0C-46F8-916F-0FA779190DA9-1024x545.png\" alt=\"\" class=\"wp-image-4091\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/DA582576-6C0C-46F8-916F-0FA779190DA9-1024x545.png 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/DA582576-6C0C-46F8-916F-0FA779190DA9-300x160.png 300w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/DA582576-6C0C-46F8-916F-0FA779190DA9-768x409.png 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/DA582576-6C0C-46F8-916F-0FA779190DA9.png 1317w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_140652\/\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"1024\" data-id=\"640\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-512x1024.jpg\" alt=\"\" class=\"wp-image-640\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-512x1024.jpg 512w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-150x300.jpg 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-768x1536.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-1024x2048.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_140652-scaled.jpg 1280w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/img_20210505_142435\/\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"1024\" data-id=\"645\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-512x1024.jpg\" alt=\"\" class=\"wp-image-645\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-512x1024.jpg 512w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-150x300.jpg 150w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-768x1536.jpg 768w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-1024x2048.jpg 1024w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/IMG_20210505_142435-scaled.jpg 1280w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/knipsel-32\/\"><img loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"411\" data-id=\"650\" src=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel-1.jpg\" alt=\"\" class=\"wp-image-650\" srcset=\"https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel-1.jpg 369w, https:\/\/www.sydspost.nl\/wp-content\/uploads\/2021\/05\/Knipsel-1-269x300.jpg 269w\" sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p>Kalibreren:<\/p>\n\n\n\n<p>De komende tijd ga ik de watermeter kalibreren. Als uitgangspunt heb ik een 10 liter emmer gevuld met water, en het aan pulsen geteld. Dit leverde 8 pulsen op. Een snelle rekensom leert dat er 1,25 liter per puls gemeten wordt. Of dit nauwkeurig genoeg is ga ik de komende tijd meten. Daarom heb ik in de sql-tabel het veld &#8217;type&#8217; toegevoegd. Dit stelt me in staat om meterstanden vanaf de meter handmatig toe te voegen, en op deze wijze het aantal verbruikte liters en de berekende meterstand te corrigeren.<\/p>\n\n\n\n<p><em>Correctie: Aan het eind nogmaals de werkelijke meterstand vergeleken met de berekende meterstand. Bleek dat het aantal pulsen exact overeenkomt met het verbruikt aantal liters. Conclusie, 1 puls is 1 liter, wat op zich ook wel logisch lijkt. De node-red flow hierop aangepast.<\/em><\/p>\n\n\n\n<p>Door het verschil tussen de berekende meterstand en de werkelijk van de watermeter afgelezen meterstand met elkaar te vergelijken, en te delen door het aantal pulsen tussen de twee &#8216;handmatige&#8217; metingen, levert dit een correctie (positief of negatief) t.o.v. de ingestelde 1 liter per puls in de Node Red functie-node &#8216;Build SQL&#8217;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Noot 31-3-2026: Tutorial ge\u00fcpdatet, Google Data Studio rapportages vervangen door Domoticz Energy Dashboard Use cases: Links: https:\/\/www.letscontrolit.com\/wiki\/index.php\/LJ12A3 Onderdelen: Artikel Aantal<\/p>\n<p><a href=\"https:\/\/www.sydspost.nl\/index.php\/2021\/05\/05\/slimme-watermeter-2\/\" class=\"more-link\">Verder lezen<span class=\"screen-reader-text\">Slimme watermeter<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[9],"tags":[12,217,95,96,25,20,76,11,94],"class_list":["post-630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diy-projecten","tag-domoticz","tag-domoticz-energie-dashboard","tag-inductieve-sensor","tag-lj12a3-4-z-bx","tag-mqtt","tag-node-red","tag-watermeter","tag-wemos-d1-mini","tag-wemos-dc-powershield"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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