Category: General

General stuff

New LED pong clock version coming soon

Well time certainly seems to fly and it’s the end of another year. It’s been a year since I finished my LED animated Pong clock which I initially started about 3 years ago and I’ve been working on an improved version using bi colour LED matrix modules I obtained from a scrap advertising LED board.…

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The useful TL431 chip

I haven’t made any electronics projects for a while now but I was working on some circuits at work that used a TL431 shunt regulator. This chip can be used to provide a 2.5V voltage reference and also 5V with the addition of two 10K resistors between the Ref pin and supply voltage and another…

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Ebay transistor tester testing

I bought myself one of those cheap transistor testers off ebay based on the Ardutester at https://forum.arduino.cc/index.php?topic=164112.0 which basically is an Arduino project that someone made which the Chinese commercialized and ripped off. It’s actually a great bit of kit but it’s clearly based on an Arduino project that was never intended to be a…

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