yaiy Posted April 10, 2005 Report Share Posted April 10, 2005 hi all,i have a problem with my project.i use the midio128 and when shorting the pins directly on the board (with a small piece of wireup)i get good results.problem is my actual wires running to the on/off buttons are very long. some are 4-7 m long.when i push them, i get (on some) several on/off messages. they are all traceable and reoccurring.as i mentioned before. i use wireup cables, i need them because the buttons are very close to each other.i had a problem managed.these are not standard buttons but 2 pieces of aluminum with a piece of insulator between them. when applying pressure to the top foil i close the circuit.trouble is there was a lot of on/off jitter. i fixed that by changing the debounce value in the mk_midio128_syx.maybe i can fix these problem using a similar method?is there something i can change that will rise the tolerance of the buttons so they want be effected by false positives?please don't tell me to rewire :Psimilar problems?http://69.56.171.55/~midibox/forum/index.php?topic=2893.0there's also the thread about the added capacitors. will it help stable my inputs? Quote Link to comment Share on other sites More sharing options...
TK. Posted April 10, 2005 Report Share Posted April 10, 2005 An impressing pictures! :)Not sure if caps will really help, maybe it's better to reduce the value of the pull-up resistors on the DIN module.You don't need to replace them, just solder the resistors in parallel. E.g., with a second 10k in parallel, you will get a 5k resistanceYou could try this for 1..8 inputs first in order to check if this really helpsBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
yaiy Posted April 10, 2005 Author Report Share Posted April 10, 2005 thanks TKis this what you mean? Quote Link to comment Share on other sites More sharing options...
TK. Posted April 10, 2005 Report Share Posted April 10, 2005 No, this is a serial connection which increases the resistance.Parallel means: just connect them togetherBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
yaiy Posted April 10, 2005 Author Report Share Posted April 10, 2005 sorry.like this one for each ressitor? Quote Link to comment Share on other sites More sharing options...
moebius Posted April 10, 2005 Report Share Posted April 10, 2005 Yupp ;)M Quote Link to comment Share on other sites More sharing options...
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