I am running the basic "BasicUse" example sketch from the TLC5940 library. When I run this on my USB powered UNO, it works fine. At this point I am taking the +5V (and GND) from a pin on the UNO for the breadboard power rails. However, I wanted to use my breadboard power supply. So, with USB unplug…

Burning TLC5940 when using external 5V

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