PWM Solar V1.1 Update

After about 2 months of continuous operation IRF9504 failed. I guess that is due to heat up. The cause of heat up , as i assume is slow switching off time due to i have used 22k resistor to switch off the mosfet. Further arduino board got burned out ( as it seems entire flash is erased due to electrical shock) while testing. Time to design a PCB with proper safety features. (Fuses , MOVs) and improve the mosfet switching using dedicated mosfet driver. while I am designing dedicated featured circuitry. I purchased a 10A solar controller from aliexpress.

This has impressive circuitry as discussed in following video post. https://www.youtube.com/watch?v=BbIqNGHe6Xc