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Forum Index : Microcontroller and PC projects : CMM2: Caps Lock and Scroll Lock lockup keyboard (not a bug)
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PeteCotton Guru  Joined: 13/08/2020 Location: CanadaPosts: 617 |
I've got a weird one. I'm in the process of making a custom case for one of my CMM2's and I found the (almost) perfect keyboard for the vibe I'm going for. https://www.amazon.ca/MageGee-Mechanical-Keyboard-Backlit-Computer/dp/B0CP9CK5TK/ref=sr_1_9 But it's got a really weird issue. I checked, and the keyboard works fine on a PC. But when connected to my CMM2, whenever I press the Caps Lock or Scroll Lock keys on the keyboard, the keyboard stops responding (the CMM2 is running fine - just not getting key presses). Plugging the keyboard out and in gets it working again. Both of those keys have LEDs (on the keyboard itself) to show their status, I wonder if the keyboard is just on the hairy edge of power draw, and those LEDs push it over? Note: I'm not looking to report this as a bug with the hardware or firmware. I have lots of other keyboards that all run absolutely fine with the CMM2s. This is very much a quirk of this keyboard. I just thought it was interesting. My solution is that I'm going to remove those keys, and when I design my case, it will have a plastic cover over those areas. I never use Caps Lock or Scroll Lock - so no great loss, and now that I think about, it kind of adds to the retro feel of the case. Heck I might also pull the Windows keys  |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 11107 |
This is a known issue with some keyboards. Check OPTION USBKEYBOARD in the manual |
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| PeteCotton Guru Joined: 13/08/2020 Location: CanadaPosts: 617 |
Oh Wow! Thank you Peter. I had no idea - and yes - that fixed the problem right away. I was happy enough to live with it - but once again you guys are waaaaay ahead of me!  |
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