Read Solar cell efficiency

Other Hardware Sensors
1

Evening friends! I have a small project in my garden where I use solar cells to power my arduino and its components.

Is there a way to read how much current my solar panels produces and get it in some sort of graph? My system uses 12V the panels are wired in parallell which means I got 4,5W ~720mA(max).

I guess I need to save the data to a SD-card for the graph part and if it then possible to read the value each hour or so?

Thanks!

2

This can be done using 3 basic blocks.

The voltage is a standard analogue read using a voltage divider.

The current can be read using a current sensor connected to analogue input.

Saving the data is simple data logging onto an SD card.

All of these functions are well used and can be found by searching in the box at the top of this page.

Weedpharma

3

Thank you!! :slight_smile: