Author Topic: Updates to full size BBB controllers in the group buy....  (Read 891 times)

Offline jeremy0203

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Re: Updates to full size BBB controllers in the group buy....
« Reply #30 on: March 17, 2019, 01:09:31 AM »
I am connecting to pin 3 ground, pin 4 5V and 14 and 16.  I verified I'm getting 5V.  I just got a new OLED so we will see. If that doesn't work I'll try one of the other boards I have and try it on a Pi.  I haven't had much time to tinker with it yet.


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Pin 3 is not ground, connect to 3.3v as its recommended not to pull the i2c lines to 5v. Also SDA pin 26 and SCL pin 28. This is all on the P1 header.

Offline dkulp

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Re: Updates to full size BBB controllers in the group buy....
« Reply #31 on: March 17, 2019, 03:42:38 PM »


I know this works.  :)


I used 3/4 for gnd/5V (assumes your oled is 5V capable) and 14/16 for the I2C lines.   If it's not working, run "sudo i2cdetect -r 2" from the command line and see if it detects anything anywhere.   The oled should be at 0x3c.   If it doesn't detect anything, try flipping the two i2c lines.   
Dan Kulp

 

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