Need a working image for Quartz64B
#4
1) For ”uart” troubles, it is recommended to check the circuit diagram.

2) PINE64 "Woodpecker".
The original 3.3V output signal was measured to be about 3.6V. This is beyond the acceptable range.

---
As for PINE64 "Woodpecker", I purchased two of them about a year ago and have them on hand.
This is obviously strange.
In my experience, when two pieces have exactly the same symptoms, the whole lot is affected.
I'm not sure if the ones being sold now also have the same problem.

As far as the "Quartz64B" is concerned, uart's trouble is probably caused by the former (see schematic: improper level shifter design).

The latter is not desirable, but in the case of "Quartz64B" there will be no significant impact
However, in the case of Rcokpro64, it is dangerous because it exceeds the input maximum range.

---
"Quartz64B", unfortunately due to delivery troubles, I still haven't received it, so I can't check it in person...

What the hell is going on ? at the recent "PINE64 Store".
  Reply


Messages In This Thread
Need a working image for Quartz64B - by Excalibur - 08-11-2022, 09:48 PM
RE: Need a working image for Quartz64B - by t4_4t - 08-12-2022, 04:21 PM
RE: Need a working image for Quartz64B - by t4_4t - 08-12-2022, 05:22 PM
RE: Need a working image for Quartz64B - by tllim - 01-23-2023, 09:02 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Quartz64B eMMC boot failure bsmorgan 2 769 11-15-2023, 12:00 AM
Last Post: balbes150
  can't get quartz64-A working jyoung 14 5,573 04-29-2023, 04:41 PM
Last Post: diederik
Tongue Trying to get Quartz model A working fasani 2 2,469 09-17-2022, 06:43 AM
Last Post: balbes150

Forum Jump:


Users browsing this thread: 1 Guest(s)