I wanted to make my own solar charger and finally got around to collecting some stuff for my concept project. The solar cells I raided from 99 Cent store when they had solar gardening lights at .99 each and a large solar cell one from solar cell phone charger that was broken by accident maliciously. The primary phase of this project is combining the solar cells to create a large, more powerful solar cell to deliver the higher voltage necessary to charge a 12v lead acid battery (scavenged from an AT&T universal power supply). So far I am able to yield 19vDC from the array of seven solar cells which isn’t bad. What I will need to work on next though is a charging circuit that would bump up the voltage but not allow overcharging or allow voltage to escape. Since I intend to want to charge my iPhone or iPad I will also need to add a circuit to the USB receptacle to fool the data pins on the devices into thinking they are in a real product charger. Otherwise I will get a message that the device is not supported by the charger. more pictures as this project progresses.
This is a Rev 2 on the VAWT (Vertical Axis Wind Turbine) concept model, the first being made originally out of cardboard, which was meant as a science project for my son to show how the wind can be converted into usable energy. We used light wood, spruce, from Michael’s hobby store for the VAWTs fins, base and reused the coils we previously made, although the next version will have eight coils rather than just four and will use bearings rather than spin on a simple piece of wood sitting on the head of a screw.
So me and one of my boys decided to try and make a solar oven. The requirement this first time around is to do it with minimal store bought materials. We excelled in that since the carboard was free and the pane of glass was taken from an unused pitcure frame. The experiment contents – 1 hotdog and 1 scrambled egg in a mason jar. After 45 minutes we only achieved 150 degrees F but the hotdog was cooked while the egg was still a bit embreonic. I attribute that to using a glass jar though and not a container or can (painted balck with heat resistant paint). In our second experiment we will try again with a black container so as to suck up the heat, enjoy the pics until then.