Wifi Voltage monitor Domoticz ESP Easy ESP8266

I built a voltage monitor to fill in the gaps of where my Outback controller does not report voltage at end of day, and now able to store data to sql server.

1. WiFi ESP8266 Voltage monitor, how I made it.

2. Parts.

Power supply:

https://www.aliexpress.com/item/5V-2A-Micro-USB-Charger-

Adapter-Cable-Power-Supply-for-Raspberry-Pi-B-

B/32601113438.html?spm=a2g0s.9042311.0.0.27424c4dniZ3Ly

$2.75

ESP8266 D1 Mini https://www.aliexpress.com/item/1PCS-D1-mini-V2-Mini-

NodeMcu-4M-bytes-Lua-WIFI-development-ESP8266-by-WeMos-d1-

mini/32754697134.html?spm=a2g0s.9042311.0.0.27424c4dAXC7P6

$3.07

ADS1115 board

https://www.aliexpress.com/item/16-Bit-I2C-ADS1115-Module-

ADC-4-channel-with-Pro-Gain-Amplifier-RPi-

1PCS/32817162654.html?spm=a2g0s.9042311.0.0.27424c4dYH6mjT $2.17

3. Helpful links in this project:

Voltage divider Circuit http://www.ohmslawcalculator.com/voltage-divider-calculator

Ada fruit use ADS1115 with the raspberry PI good tutor to

get ideas.

https://learn.adafruit.com/raspberry-pi-analog-to-digital-

converters/ads1015-slash-ads1115

ADS1115 combined with mini V2 Mini NodeMcu 4M bytes Lua WIFI

https://community.blynk.cc/t/nodemcu-using-adc-extender-

ads1115/18511

4. Results, and things I love, things that need

improvement.

Need something to fix voltage spike of -65 V

For unknown reason unit does not power back on after 

reset set with inverter kicks off...????

If I power this board from the solar charger USB it 

drops voltage by 1/2 ????

5. Where do I want to go from here. ESP32

   I would like to have this run off a battery, and switch

to a esp 32 board so that I could use less power, perhaps

mount in car and have it report battery status.

Considering mounting solar panel.

Creating a voltage monitor for my 24 V batteries over WIFI. I now have the ESPeasy reading the data. Created a voltage

divider for the ADS1115 6V dc input.

ESP8266 D1 Mini https://www.aliexpress.com/item/1PCS-D1-mini-V2-Mini-

NodeMcu-4M-bytes-Lua-WIFI-development-ESP8266-by-WeMos-d1-

mini/32754697134.html?spm=a2g0s.9042311.0.0.27424c4dAXC7P6

Voltage divider http://www.ohmslawcalculator.com/voltage-divider-calculator

Examples that helped me along the way.

ESP8266 Voltage Nice. Best one so far very simple. https://www.youtube.com/watch?v=HxWtZGjlllM&t=10s

Nice video that walks thru what this board does. https://www.youtube.com/watch?v=8qGr6Q5Ymps

EasyESP setup for esp8266 board. https://www.letscontrolit.com/wiki/index.php/ADS1115

Domoticz homepage open sourced software they have a great

forum. https://www.domoticz.com

My MeWe page for Domoticz and projects: https://mewe.com/group/5b32c5e6178fca111e9fb75f ... https://www.youtube.com/watch?v=rpFmTUszNPI