Recently a cell phone ring tone was in the news – it’s 17,000 Hertz and meant to be heard by teenagers, but inaudible to adults. Really got some people upset for some reason. It got me wondering – what frequencies can I hear? I made the shrieker. It can generate tones from 10,000 Hz to […]
Shrieker using PIC16F676 Microcontroller Read More »
I can’t take credit for the design of this one. I bought the gear as a clock a few years ago. It was mounted on a frame and had one of those cheap clock units running it. The gear is designed to be driven by the minute-hand shaft of the clock mechanism. The problem was
Gear Clock using PIC16F676 Microcontroller Read More »
You get a really good feeling when you plug in some lights and appliances and power them with your own electricity from the sun or wind. You get a really bad feeling when you run those items and the clouds come for days or weeks or months on end. The batteries get lower and lower.
Grid Powered Battery Charger – The Plans using PIC16F676 Read More »
