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adafruit 1.2" display with backpack
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Please be positive and constructive with your questions and comments.

adafruit 1.2" display with backpack

by murray6301 on Mon Dec 21, 2020 6:51 pm

I am using this display on a Rasp Pi 400. The backpack connects properly and the display works (partially). I'm using python code display[0] = 'N' to check the display, where N is a number from 0 to 9. The numbers 1,3,6,7,8 display properly.

However, the remaining digits have errors like this:
2 display the correct segments for 2 but also lights seg f.
4 display H
5 displays 6
9 display 8

Any help would be appreciated.

murray6301
 
Posts: 10
Joined: Thu Apr 07, 2016 12:02 pm

Re: adafruit 1.2" display with backpack

by murray6301 on Mon Dec 21, 2020 7:07 pm

I also used the clock code and it runs fine except the same digits (2,4,5,9) are wrong. I'm wondering if it could be the display. I assume if I assembled it wrong I would get nothing. But again, the assembly picture looks just like the one on the Adafruit website.

murray6301
 
Posts: 10
Joined: Thu Apr 07, 2016 12:02 pm

Re: adafruit 1.2" display with backpack

by murray6301 on Tue Dec 22, 2020 2:18 pm

I found my problem and decided to put it here in case anyone has a similar problem. I simply had a small bridge solder joint between to pins.

murray6301
 
Posts: 10
Joined: Thu Apr 07, 2016 12:02 pm

Please be positive and constructive with your questions and comments.