Re: UDRC Compatibility with the 'Official' 7 inch touch screen display
Richard - VE7CVS
I did some further digging into the Raspberry Pi site, and found this:
If you are using a A+, B+, 2, or 3, then the display uses i2c-0 (also used for the camera and HAT configuration) up the DSI flexi cable. It does NOT need the two jumpers off the SDA and SCL pins on the display board to be connected anywhere. i2c-1 is therefore still available for your use.I'm using a Pi 3, and haven't been using the jumpers, but had assumed (incorrectly!) that the DSI link shared I2C with the GPIO connector. It does not.
Ah, found the datasheet - it might be helpful if the 'UDRC' tab on the main page pointed to the datasheet as well, I didn't think to look on the 'Products' page. I did look under 'Support', another place that I would normally expect to find documentation and schematics.
Now, it's time to plug this stuff together and see what works!
I'm happy to see the on board regulator for the Pi and display - powering these from USB has been problematic - had to find some micro-USB cables with heavier gauge wire to keep the Pi from sagging under load. Powering from the UDRC will be quite welcome!
- Richard, VE7CVS
On 8/13/16 10:50 AM, John Hays wrote: