Hardware :
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One Channel Wemos D1 Mini Relay Shield Wemos D1 Mini Relay Module for ESP8266 Development Board 1 channel ( https://www.aliexpress.com/item/32728319939.html )
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Wemos Mini D1 ESP32 WIFI Bluetooth CP2104 Development Board Module ( https://www.aliexpress.com/item/32839344778.html )
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1x resistor 7.5K and 1x resistor 30K ( https://www.aliexpress.com/item/4000773915011.html )
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DC-DC 9V 12V 24V to 5V 3A Step Down Power Module CAR Charger / Mobile power ( https://www.aliexpress.com/item/32833730316.html )
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Enclosure 65x50x55mm(LxWxH): AG Series High-end Quality IP67 Waterproof DIY Electrical Junction Box ABS plastic RoHS Enclosure Case Outdoor Distribution box ( https://www.aliexpress.com/item/4000375281151.html )
Connections:
- D1 on the Relay Shield to IO22 on the Wemos ESP32 board
- 3.3v, 5v and GND on the Relay Shield to 3.3v, vcc and GND on the Wemos ESP32 board
- Resistor 30K to IO23
- Resistor 7.5K to IO23 and GND
- DC-DC module outputs to Wemos ESP32 board VCC ("+") and GND ("-")
- DC-DC module input ("+") to Relay Shield inout ( middle screw terminal of the relay )
- Relay Shield input ( middle screw terminal of the relay ) to red cable for "+" 12v input/power (with cable terminal on the other end)
- Resistor 30K ( other end ) to Relay Shield NO ( left screw terminal of the relay )
- Relay Shield NO ( left screw terminal of the relay ) to red/white cable for "+" 12v to the pump (with cable terminal on the other end)
- DC-DC module input ("-") to black cable for "-" power supplay 12v (with cable terminal on the other end)
- Make an opening for the 3 cables on the enclosure box and put everything together and seal with sikaflex
For initial software flash or factory reset please follow the steps:
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Unzip: upload_scripts.zip
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Copy inside the files for you exact hardware platform (latest release) : e.g. WROOM32/11276
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Edit the COM port in erase.cmd and execute it
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Edit the COM port in upload.cmd and execute it
Video of how to setup the monitoring app/link can be found here :
iOS: https://www.youtube.com/watch?v=SIvRml3169E
Android : https://www.youtube.com/watch?v=eNQJRxOCrkE
More information and support can always be found at : www.boat-vitals.com