Surface Mount LED Tester v2.0
thingiverse
A tool for testing surface mount LEDs. Instructions I used the following Digikey Items: 3319P-1-471-ND CWI333-ND C4SMF-BJS-CR0U0452CT-ND You can of course use your own LED, however the LED I used is oval shaped rather than round; so the hole in the electronics cover is also an oval. I wouldn’t go with this LED again, it’s too bright. Just drill out the hole so its round (or mod the file). You will also need: Copper tape Two #2 size safety pins Strip (or perf) board Three CR2032 button cell batteries A resistor to run the LED you use And of course wire. Make sure you wire your on/off LED in parallel with the trim-pot/probe outputs. Follow the pictures for assembly.
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