Not only did he add more features, but he also found a mistake in the frequency counter circuitry that he fixed on his own through the course of the project. It’s based on an ATmega chip, which quite easy to work with (it’s the same chip as you’ll find in the Arduino Uno but gone the Makefile route instead of spinning up that IDE). Once it was delivered he set about adding more features, namely Tetris. ’s old meter didn’t even test for capacitance but he was able to get many years of use out of that one, so this device should serve him even better. The transistor tester is a GM328A made for various transistor testing applications, but is also an LCR meter. Like this transistor tester that was just asking to have Tetris programmed onto its tiny screen. But with all that abuse, the ribbon cable broke and he set about on other projects. He had programmed it to also play the Google Chrome jumping dinosaur game, and also used it as a badge at various conferences. had been using the same multimeter since he was 15. An AVR CPU uses some analog and digital trickery to make a lot of different measurements.Ĭontinue reading “How Do Those Component Testers Work?” → Posted in Tool Hacks Tagged AVR, Component Tester, Transistor Tester Although there have been some divergence with all the different versions, the basic idea is the same. even quotes our earlier post on the topic and, as we did, dug into the original developers of the device which has been cloned over and over by Chinese sellers. It seems like magic, but did the research on how it all works and summed up his findings in a recent video. For example, you can insert a resistor, a capacitor, an inductor, a diode, or a transistor and get a readout of which pin is which. You put a component in the socket and it will identify - with a push of a button - what the part is, which pin is which, and the value of the part. If you haven’t seen them before, they usually have some kind of multi pin socket. Most people have at least seen those cheap component testers you can buy on the Chinese websites for $10 or so.
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