Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 17:44 02 Aug 2025 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : CMM2 OPTION BUG

     Page 2 of 2    
Author Message
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9610
Posted: 04:33am 15 Oct 2020
Copy link to clipboard 
Print this post

How about putting a 10k pull-up resistor on pin-40, which should give that pin a firm high voltage - perhaps more so then the MCU itself can provide in the firmware.  This is what I have done in the past with that problem, and the external pull-up seems to fix it.

It only seems to affect SOME boards, not all of them, which is why it is so confusing.
In any event, installing a 10k pull-up on pin-40 to the 3v3 supply voltage seems to stop it on any boards that I have seen that happen on.
Smoke makes things work. When the smoke gets out, it stops!
 
     Page 2 of 2    
Print this page


To reply to this topic, you need to log in.

The Back Shed's forum code is written, and hosted, in Australia.
© JAQ Software 2025