Search found 6 matches

by cesar
Tue Jul 16, 2019 12:02 pm
Forum: Hardware issues
Topic: Keyboard debouncing
Replies: 71
Views: 59880

Re: Keyboard debouncing

I'm using the latest firmware revision DMCP_3.14 (A new version gets a chance!). I've been using the calculator for a few hours and I think the keyboard reading has improved. In this time I haven't observed repeated keystrokes. Is it a coincidence or have you improved the keyboard debounce? In my ca...
by cesar
Mon May 21, 2018 7:49 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 198
Views: 137741

Re: buttons that don't register well

mcc wrote:
Mon May 21, 2018 2:31 pm
Hi Cesar,

thanks a lot for the detailed description of your EN-hancement :) of the keyboard of your DM42!

Cheers
Meino
Let me know if the EN-hacement post-it works on your calculator :-)
Regards
by cesar
Mon May 21, 2018 12:11 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 198
Views: 137741

Re: buttons that don't register well

Hi Cesar, only to check whether I have understood your hack correctly: You put this two pieces/stripes of post-it above the left or the right dome of the ENTER key (looking at the DM42 from the front side and the calculator oriented with the usb pointing away from you) ? Thanks a lot for the hack! ...
by cesar
Sun May 20, 2018 1:49 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 198
Views: 137741

Re: buttons that don't register well

I have done a low-tech hacking of the DM42 keyboard. One of the problems I had was the asymmetry of the ENTER key. It works well by pressing on the right side of the key. I had tried to adjust the back screws and some more tricks that I read on the forums, without success. What worked for me? I have...
by cesar
Tue May 15, 2018 9:05 pm
Forum: Usage tips, tricks and problem reports
Topic: Wishes for next Updates
Replies: 11
Views: 8218

Re: Wishes for next Updates

Try going to Setup -> Settings -> (X) Slow Auto-repeat That seemed to help with my DM42 keybounce problems. Thank you! Yes! I have already tried the "Slow Auto-repeat" setting, but it does not solve the problem totally (in my case). I've also tried cleaning the domes. But it still fails o...
by cesar
Tue May 15, 2018 12:52 pm
Forum: Usage tips, tricks and problem reports
Topic: Wishes for next Updates
Replies: 11
Views: 8218

Re: Wishes for next Updates

Hello! A key bounce detection algorithm to prevent double keystrokes due to false contacts in the domes. It doesn't seem difficult to implement: if the time between keys is less than x milliseconds, a single press is recorded. I'm sorry if it's an obvious idea or if it has drawbacks that affect othe...