Light tracking using micropython on ESP8266
Start of a project to make a sun tracker for a little solarpanel.
The ESP8266 only have one pin to read the input from the light dependandt resistors, so i ended up using GPIO4 and GPIO5 to power the resistors individually. The only problem was that the readings became a bit unreliable with that setup, by adding 2 diode's the current seemed to become more stable. To lower the voltage down to 1V a 10k resistor was used towards ground.
Parts so far:
1 x ESP8266 NodeMCU.
1 X 28BYJ-48 step motor
1 X https://www.clasohlson.com/no/Exibel%2C-solcellelader-med-USB-10-W/p/Pr388533000 This is what i scavenged both solar panels and the usb controller.
1 X The powerbank i use is one that can charge and be used at the same time and i have a few of. https://www.clasohlson.com/no/Clas-Ohlson,-Powerbank-6700-mAh/p/38-9060-1
1 X ULN2003APG step motor driver board.
2 X Light dependent resistors.
2 X Diode's.
1 X 10k resistor.
1 X Medium breadboard.
wires.
Connection schematic
The solar panel "construction"
The electronic parts are cramed in to a box rated for outdoor use. There may be some tape covering the hole for cables
Picture from the top of the setup
Picture from the side of the setup
