Brain jr jumpy buttons

Kleemensch

Hi guys,

I recieved my Brain Jr today and during the first tests i noticed that when a button is pressed, the brain sends out a lot of on/offs at once.

I tried out some different types of buttons but the results were allways quite bad... 

On the Teensy board i use this library  http://www.pjrc.com/teensy/td_libs_Bounce.html  to solve this problem.

Maybe you could include this technique in a coming firmware update..? :)

Greetings from Germany

Kleemensch

Mark

Are you watching which butons are triggering? Are all the on/offs the same button you are pressing or is it triggering multiples?

Jay

What kind of buttons are you using? Do you have the analog pins grounded with jumpers?

Kleemensch

Hiya,

all the analog ins are grounded.no worrys :)  i`m using quite cheap buttons which tend to "chatter" a little. on microprocessors like the teensy or the arduino you can increase the debounce time/ delay on the digital read to deal with this. the debounce time on the brain jr is waay too short, i guess like 5ms. i´ve done a couple of diy projects and depending on the quallity of my pushbuttons, i allways had to use like 30- 50 ms to get acceptable results. 

Ive tried 6 different buttons and none of them were even near to being usable..

Kleemensch

cool. thanks for the effort.

well ive been mostly using stuff like theese https://www.sparkfun.com/products/9807 in my diy projects, essentially all the stuff you get for a dollar at your local electronics store..