Im doing a simple blink test on my raspberry pi zero but I am having trouble getting my gpio pins to work. I have already installed wiringpi and RPi.GPIO. My setup is simple, I connect pin #1(3.3v) to power and pin #6(ground) to ground. I have tried this setup with a battery and it seems to work just fine. Also, when I run "gpio readall" I get a table with no errors. Here is the picture of my setup:

blink project setup

I have tried the same test with a 3v battery after my test with the raspberry pi. The LED does turn on.

3v battery test

1 Answer 1


The power and ground pins are not GPIO.

You appear to have shorted a LED between 3V3 and ground. That will have destroyed the LED.


  • No the LED still works. I have tried this with a 3v battery. The LED works fine.
    – km1pi_zero
    Apr 16, 2017 at 18:03
  • The only way it would still work is if you are fortunate and fitted it back to front. It's not lit in your photo.
    – joan
    Apr 16, 2017 at 19:14
  • As i mentioned before, I have tried this with a 3v battery after I posted this question. The LED lits up. My problem is not with the LED.
    – km1pi_zero
    Apr 16, 2017 at 22:55
  • ...and as I pointed out to you the only way it would still work is if you connected it back to front. Your problem is you do not understand how to use a breadboard which is why I posted the link.
    – joan
    Apr 17, 2017 at 8:00

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