Self sustaining solar powered charging platform

When deploying remote electronic device there is always a dilemma how to power it. You normally want to provide long therm power source and if it can recharge during operation, then things are even better. If you are thinking on building embedded project outside, then you should consider using renewable power sources like sun and wind. SwitchDoc Labs has been working on handy platform that helps achieve a bit of power independence. Their main focus is to provide solar tracking for small solar panel which can charge batteries, power embedded boards like Raspberry Pi or Arduino, and report parameters to apps. So called “SunAir” have everything you need to deploy independent system which takes care of tracking sun with two photo-resistors, servo motor and limit switches. Solar charge controller ensures… Continue reading

Facing sun with MSP430 based tracker

Solar panels are most effective when facing sun directly. So if you want to get most energy, you need to track sun trajectory in order to keep panels always facing towards the sun. Actually this is fairly easy task. In this solution vigneshraja shares setup built of couple light dependent resistors (LDR) and single motor to track sun. Tracker is built on MSP430G2231 microcontroller that sit in Launchpad. Interesting thing is that two LDRs are in stationary position that determine sun position by comparing their values. Motor is driven through H-Bridge motor controller. Such solution is great for near equator locations, but in other areas sun wont travel directly above, so probably more suitable tracker should have two motors controlling both angles to point sun directly. Continue reading