tamilkamathaigal

Putting it all together In part 1 and part 2 of this posts I investigated and designed the components for a solar-powered Morse thermometer. In part 3 everything gets connected. In order to get the most out of the collected sunlight it is important to use as little power as possible. A red LED is a good choice here, because it only has a forward voltage of 1.7 Volts. So it will consume only

Reverse Engineering a Solar Lamp Part 1 of this post is a write-up of my project for a thermometer with Morse code output. But I was not satisfied with the relatively high power consumption of the circuit, so I decided to use a solar cell to supply the circuit. A cheap source of solar cells these days are solar garden lamps. You get them for very little money in garden centres and DIY shops.

Project Features Extremely simple hardware Low-Cost Uses the internal temperature sensor of the ATtiny25 Introduction I used to have one of those electronic thermometers with an outdoor sensor. That sensor transmits its readings through an RF link. Except that it didn't really work. Every now and then I had to reset the thermometer so that it would re-connect to the sensor. This