PIronman board shorts when three GPIO ports are set to high

General
1

I’m trying to use the GPIO ports on the PIronman board to drive some mosfets. The first two work great, but the moment I turn the third one on the board shorts and the entire system immediately turns off. I’ve tried a variety of GPIO ports in case one the third one is bad, but all of them cause the shutdown. Hoping it was just using too much voltage to support I plugged a second power supply directly into the raspberry and tested. This time the raspberry stayed running, but the PIronman board shut down. I also disconnected all wires from the GPIO lines to make sure there wasn’t a hardware short.

My next test is to force the LEDs being driven by the board off to see if I can conserve some power.

Anyone else try using the GPIO ports? All you need to do is set three of them HIGH.

Update: I shut off the LED and the problem persists.

2

I am sorry I didn’t quite understand your question.
What code did you execute?
Please refer to our tutorial link carefully:
https://docs.sunfounder.com/projects/pironman-v2/en/latest/features.html
GPIO26 cannot be moved because it is a shutdown signal. Once you run the code, set GPIO26 to a high level. If the motherboard detects the high level, it will power off and shut down.
Note: The GPIO pins of the RGB lights can be changed, please refer to the tutorial:
https://docs.sunfounder.com/projects/pironman-v2/en/latest/ws2812_strip.html

3

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4

Thank you so much! I didn’t see that set of docs that explains the pinout. I changed my code to use pins 17, 22, and 27 and it’s works fine! I appreciate you taking the time to answer!

5

We are glad to know the issue is resolved. :smiley: