Chesco Posted January 8, 2022 Posted January 8, 2022 (edited) 41 minutes ago, dom69 said: it's ok they are in the right direction Thanks you very much dom69 Edited January 8, 2022 by Chesco
Chesco Posted January 8, 2022 Posted January 8, 2022 Hello again. I try to learn new things every day, making use of the internet I have come to the conclusion that the proposal offered by Pcbway is the RIGHT one. I don't like wasting anyone's time and only ask a question when I need help. Perhaps I can offer help in other aspects, but not in electronic matters. Again thanks you very much...
reinkc Posted January 20, 2022 Posted January 20, 2022 The display is turning this strange color whenever a SD card is present at boot. Colors are normal when no SD Card is present. I have loaded latest code, reset config, and tried a few different SD cards with same result. Does anyone have an inclination of what the problem could be and where I can start looking?
Content Provider lucky1 Posted January 20, 2022 Author Content Provider Posted January 20, 2022 If you have a closer look at the pixel LEDs is there any color missing ? Red, green oder blue ?
reinkc Posted January 21, 2022 Posted January 21, 2022 I did a quick video to better illustrate what's happening: https://photos.app.goo.gl/TYMqEmBSrbLvRvpN7 Thanks, Arrie
reinkc Posted January 21, 2022 Posted January 21, 2022 It can have files or no files, same result. It seems to be more a card being present or not.
reinkc Posted January 21, 2022 Posted January 21, 2022 (edited) On 12/9/2021 at 1:20 PM, lucky1 said: It is ! I would change or resolder C35 as a start Swapping out C35 and reflowing R20 fixed this issue. Thanks again for your help! Edited January 21, 2022 by reinkc
reinkc Posted January 21, 2022 Posted January 21, 2022 On 12/12/2021 at 1:09 AM, lucky1 said: I guess your CPU is not starting up. Check all the voltages at the CPU. Especially check the voltages after L1 We had this before in this thread Reflowing C6 solved this issue. Thanks again for your time!
reinkc Posted January 24, 2022 Posted January 24, 2022 On 1/20/2022 at 1:39 PM, reinkc said: The display is turning this strange color whenever a SD card is present at boot. Colors are normal when no SD Card is present. I have loaded latest code, reset config, and tried a few different SD cards with same result. Does anyone have an inclination of what the problem could be and where I can start looking? Something else I just noticed...even with no SD card in, it never flashes the Hardware ID or read "Not Activated" like all the others after 3 minutes. Also, on the others a file with the Hareware ID gets written to the SD Card, but not this one. Does this lead anyone to an idea of the issue?
Content Provider lucky1 Posted January 24, 2022 Author Content Provider Posted January 24, 2022 Which firmware version ? I guess the firmware image on your device is corrupted or you have a defective flash memory. I would try to install a new image through DFU mode and see if the problem persists.
reinkc Posted January 24, 2022 Posted January 24, 2022 13 minutes ago, lucky1 said: Which firmware version ? I guess the firmware image on your device is corrupted or you have a defective flash memory. I would try to install a new image through DFU mode and see if the problem persists. I have reflashed several times, different versions as well. Which chip is the flash memory? I can try to replace it.
Content Provider lucky1 Posted January 24, 2022 Author Content Provider Posted January 24, 2022 It is integrated in the CPU
reinkc Posted January 24, 2022 Posted January 24, 2022 1 minute ago, lucky1 said: It is integrated in the CPU Oh. Well shit.
Chesco Posted January 25, 2022 Posted January 25, 2022 Good morning. Any other PCB manufacturer that offers good results? Greetings.
reinkc Posted January 27, 2022 Posted January 27, 2022 So I decided to try swapping the CPU myself. After lots of practice, I did it! I successfully swapped a STM32H743 with a STM32F427 on one of my 192x64 EVO boards. Unfortunately, the same thing happened again when power was applied, the BAT60 D1 diode burnt up. Is there anything else you can think of that might be causing my problem?
reinkc Posted January 27, 2022 Posted January 27, 2022 13 hours ago, reinkc said: So I decided to try swapping the CPU myself. After lots of practice, I did it! I successfully swapped a STM32H743 with a STM32F427 on one of my 192x64 EVO boards. Unfortunately, the same thing happened again when power was applied, the BAT60 D1 diode burnt up. Is there anything else you can think of that might be causing my problem? I just noticed the 3+ and GND are bridged on all these, that has to be why this is happening. Now to find where this is bridged....
Content Provider lucky1 Posted January 27, 2022 Author Content Provider Posted January 27, 2022 2 hours ago, reinkc said: I just noticed the 3+ and GND are bridged on all these, that has to be why this is happening. Now to find where this is bridged.... The H7 generates a bridge between 3.3V and GND because of its different pinout compared to the F4, but that should be gone if you soldered the F4 correctly.
reinkc Posted January 27, 2022 Posted January 27, 2022 2 hours ago, lucky1 said: The H7 generates a bridge between 3.3V and GND because of its different pinout compared to the F4, but that should be gone if you soldered the F4 correctly. Ok yes, I just did confirm that. I took a new board, confirmed the bridge with the HT. Removed the HT, no bridge. Put in an F4, tested all pins good, and no bridge. Plugged in power, BAT60 didn't blow up :-). But...unfortunately...can't get into DFU mode. Are you confident STM32F427 should work? Thanks
Content Provider lucky1 Posted January 27, 2022 Author Content Provider Posted January 27, 2022 I´m SURE that it works. Hopefully you did not get any fake chips like this guy here .
reinkc Posted January 27, 2022 Posted January 27, 2022 Ugh...I think they are fake. Good lord what a disaster, I can't catch a break here. Guess I'll just wait a year until I can get some real ones.
reinkc Posted February 1, 2022 Posted February 1, 2022 I was going to order some EVO256x64 boards from PCBWay (since I already have the CPU chips), but I noticed there isn't an option for uploading Source Code like in the video. Is the project up-to-date there?
Content Provider lucky1 Posted February 1, 2022 Author Content Provider Posted February 1, 2022 2 hours ago, reinkc said: I was going to order some EVO256x64 boards from PCBWay (since I already have the CPU chips), but I noticed there isn't an option for uploading Source Code like in the video. Is the project up-to-date there? So far no complaints from those who ordered.
reinkc Posted February 1, 2022 Posted February 1, 2022 Dumb question, does the pin2dmd.bin file contain firmware only, or firmware and bootloader?
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now