ATTiny85 PWM Solar Charge Controller

After receiving Julian’s comment on my first Arduino solar charge controller Youtube video I’ve been thinking of ways to reduce the power consumption, but after a fair bit of reading (and a bit of guessing) I’ve been able to come up with a working prototype. In the video below I look at the code, how to program ATTinys and the trade offs that come with reducing power consumption.

Continue Reading →

Maplin 3D Xmas Tree Build – Fail

I attempted to build a fairly simple electronics kit to decorate the solar shed for Christmas. It’s a simple Astable Multivibrator based circuit which I couldn’t manage to get working as it should. Never fear – add a microcontroller and we’ll get those leds to flash! The code for this project is further down the page:


Continue Reading →