Current version of the main board

We apologize for the long time taken to publish our schematics and code, but we are really busy with exams at schools, and left with less time to test our project.

The biggest problem of missing uploads has been solved and everything seems to work really well, but we need to improve current consumption (the main board drains about 0,3W during standby) and avoid some temperature errors. As anticipated we will probably switch to Julian Ilett’s PWM5 Charge controller, because it has lower current consumption than the one that we are currently using. It also uses an N-Channel Mosfet, which has a lower Drain-Source resistance, so more power from the solar panel will go to the battery instead of being wasted as heat.

Current solar charge controller, modified from http://www.instructables.com/id/ARDUINO-SOLAR-CHARGE-CONTROLLER-Version-20/

You can find our code on our github page HERE.

Here is the link to Julian Ilett’s site http://256.uk/?page_id=68

On the next update we will probably show an intensive test.