Posts Tagged ‘LED tester’

Programmable seven segment LED tester

Tuesday, July 30th, 2019

A Seven segment LED tester project from Arduino Enigma: Here is the finished Seven Segment Tester. All of the available Arduino Nano pins, except for analog input pins A6,A7 and Serial Port pins D0 and D1 are connected. This leaves us with 18 pins to bring to the 3M Zero...

Posted in Arduino, LEDs | No Comments »

Kevin’s LED tester

Monday, December 9th, 2013

Kevin Rye designed a simple LED tester:I decide to put together a small LED Tester board. It’ll be powered by a small coin cell battery. I can pick up an LED with a pair of tweezers and just simply tap it to the solder pads. If it lights up, I...

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Posted in LEDs, testing | 7 Comments »

Simple LED tester/matcher

Friday, March 8th, 2013

Here's a simple adjustable current source with a PNP transistor that drives either one or two LEDs for testing and/or intensity matching purposes. The current is from 2 to 16 mA in four steps using a rotary switch. While this would make a good beginner's project, its also a useful...

Posted in LEDs, testing | No Comments »

Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
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  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
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