My Solar light tracker

I was talking to you in a recent article about controlling pwm servos with Atmega. Well, I finally finished my project and I can show it to you.

Firstly, the strong points.

  • Minimum power consumption. I do not use any mechanics to find out sun position. Motors do not spin redundant and at most 180 degrees.
  • Minimum movements. If position is validated each N seconds, motors do not activate.

Secondly, the drawbacks

  • Not very precise – 60 degrees.
  • Just a proof of concept, mechanics can not support actual heavy solar panel


Cincopa WordPress plugin

..and video.

I used photoresistors linked in ADC inputs of ATmega16 and two servo motors controlled by PWM. Details will be supplied if requested. Resources:

  • iuliux

    really awesome