10w led pir floodlight upgrade – fitting a cds light dependent resistor
This neat little 12v PIR sensor has survived a year in the great outdoors, partly because it uses MOSFETs for…
Arduino mppt solar charge controller #18 – tracking algorithm works!.. sort of
I've written a first draft MPPT algorithm which sweeps the PWM value from one end of the scale to the…
Arduino mppt solar charge controller #17 – buck converter efficiency
The new voltage and current sensors on the battery side mean that Watts in and Watts out can be measured…
Arduino mppt solar charge controller #16 – testing the new board
I've completely rebuilt the MPPT controller test rig so that the Arduino has control over the PWM mark/space ratio. This…