Hello abelectronics.
your ADC Pi s doing a huge role in my project. Thanks for great work.
I've built the circuit connecting Raspberry pi Pico W and ADC pi, activating 3 channels(1,2,8) and it works well at first. However, after 2~3 minutes or longer, it throws out the error like:
[TimeoutError]: read_raw: channel X conversion timed out
The timeouterror did not happen when I built the same system with Raspberry pi 4, but It started happening at connection with Pico W(fyi, I used different ADC pis, but I've build 3 same circuits and the error happens same at all 3, i think faultiness of a single one is not the problem).
Channels throwing out TimeoutError are random.
I searched on the forum to find some clues, and found some library modification was done for full-sized raspberry pi boards but I'm not sure it was done for micropython library(https://github.com/abelectronicsuk/ABElectronics_MicroPython_Libraries) as well.
If it was done, can I get some clues about causes of TimeoutError I mentioned above to fix my work?
Sorry if the question was stupid, and if more information is needed, I'd be more then happy to give it to you.
Regards,
Suhyun
[TimeoutError]: read_raw: channel X conversion timed out
126 Views - Created 05/06/2023
05/06/2023
Posted by:
Suhyun
05/06/2023
Posted by:
andrew
Location:
United Kingdom
Hello Suhyun
The timeout error could be cause by the ADC library not giving the Pico W enough time to fetch the ADC sample. Try modifying the ADCPi.py library to increase the timeout_time value and see if that fixes the problem.
On line 218 in ADCPi.py change:
timeout_time = time.time() + (100 * seconds_per_sample)
to
timeout_time = time.time() + (1000 * seconds_per_sample)
The timeout error could be cause by the ADC library not giving the Pico W enough time to fetch the ADC sample. Try modifying the ADCPi.py library to increase the timeout_time value and see if that fixes the problem.
On line 218 in ADCPi.py change:
timeout_time = time.time() + (100 * seconds_per_sample)
to
timeout_time = time.time() + (1000 * seconds_per_sample)
06/06/2023
Posted by:
Suhyun
Dear Andrew.
Your solution absolutely fixed the problem. I ran the code for last 12 hours and it worked well.
I appreciate your help. Have a nice day.
Suhyu
Your solution absolutely fixed the problem. I ran the code for last 12 hours and it worked well.
I appreciate your help. Have a nice day.
Suhyu
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