Having alternative energy as one of my hobbies, I've recycled an old bedside cabinet to be used as a solarpowered energy-backup. This project is low-budget and most of the materials are recycled.
At the moment it is only solar charged using 3 12 Volt 1,5 Watt trickle charger solarpanels (no charge controller needed), but I hope to upgrade it to solar and wind power with a charge controller. The key here is just that I've not found a sutable schematic yet to build a charge controller. Sugestions are welcome...
Step 1: Solar setup
This is the set-up of the solar panels. I've fixed them to an old drying rack which is hanging on the balcony of my condo. Three of the panels are connected to the cabinet, one is trickle charging a separate battery. Despite the fact that my balcony is facing east, the yield is enough to charge the battery which is used to charge my cellphone or play the built-in carradio.