Current circuit works as follows:
- When solar cell voltage is higher than 0.7V , LED is OFF (sort off day/night sensor). When solar voltage is lower than 0,7V, LED is shining with low intensity
What is the the correct way to connect arduino pin D2 to take control over above described default behavior? (disconnect SW4 and remove R9)?
- Which voltage measurement technique (internal reference or reference to regulated Vcc voltage) should i use to meassure Lipo voltage?
- What are correct/recommended resistor value for optimal battery utilization.
Should this reference be used: https://github.com/rlogiacco/BatterySense
Is arduino pin D2 connect properly? It control two level LED intensity:
- pin HIGH - LED glows with HIGH intensity (between led+ and led- is ~4V) pin LOW LED glows with LOW intensity (between led+ and led- is ~2,5V)
Thanks for help and recommendations