rogic Posted May 12, 2003 Report Posted May 12, 2003 Hello,I needed more buttons than pots for Traktor mb64. I Found a schematics in other thread - can't find it now - simple wiring of buttons to AIN module with a resistor of 10K.Since I have different pot values, I connected same resistors as pots in a group of 8 to AIN module. There are 7 of them: 2 with 50kOhm and 5 with 10kOhm. All of them are connected correctly.I tested them and they seem to work ok. But they are not 'precise' as normal buttons (connected to DIN), sometimes they act as I pressed them twice ???But that's not the main problem - this is: When I made tests, I clicked on several buttons fast, maybe sometimes 2-3 of them together. After such 'impact', some of buttons stop working at all. There is no pattern - everytime different buttons do not respond anymore. Only help in that case is reset of MB, and everything works fine.I am wandering if this is a problem of DIN->AIN modification, or I've done something wrong? ??? Quote
rogic Posted May 12, 2003 Author Report Posted May 12, 2003 Hello,I needed more buttons than pots for Traktor mb64. I Found a schematics in other thread - can't find it now - simple wiring of buttons to AIN module with a resistor of 10K.Since I have different pot values, I connected same resistors as pots in a group of 8 to AIN module. There are 7 of them: 2 with 50kOhm and 5 with 10kOhm. All of them are connected correctly.I tested them and they seem to work ok. But they are not 'precise' as normal buttons (connected to DIN), sometimes they act as I pressed them twice ???But that's not the main problem - this is: When I made tests, I clicked on several buttons fast, maybe sometimes 2-3 of them together. After such 'impact', some of buttons stop working at all. There is no pattern - everytime different buttons do not respond anymore. Only help in that case is reset of MB, and everything works fine.I am wandering if this is a problem of DIN->AIN modification, or I've done something wrong? ??? Quote
pay_c Posted May 12, 2003 Report Posted May 12, 2003 One possibility: As the MB is turned on, measure the voltage at the out of the 7805. Is it really at 5V (or only a little lower?). Because some regulated "Netzteile" (the english word does not come into my mind - that thing, where you get your power from - those 7-10V) are loosing voltage if running at higher currents.If it is, try higher incoming voltage (mine´s running at 9V and delivering only like 7,8V @ 250 mA).Could be. Quote
pay_c Posted May 12, 2003 Report Posted May 12, 2003 One possibility: As the MB is turned on, measure the voltage at the out of the 7805. Is it really at 5V (or only a little lower?). Because some regulated "Netzteile" (the english word does not come into my mind - that thing, where you get your power from - those 7-10V) are loosing voltage if running at higher currents.If it is, try higher incoming voltage (mine´s running at 9V and delivering only like 7,8V @ 250 mA).Could be. Quote
TK. Posted May 15, 2003 Report Posted May 15, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kBest Regards, Thorsten. Quote
TK. Posted May 15, 2003 Report Posted May 15, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kBest Regards, Thorsten. Quote
rogic Posted May 15, 2003 Author Report Posted May 15, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kAll of them? Because I've read on the board that pots with same values have to be connected to one 4051... ??? Quote
rogic Posted May 15, 2003 Author Report Posted May 15, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kAll of them? Because I've read on the board that pots with same values have to be connected to one 4051... ??? Quote
TK. Posted May 16, 2003 Report Posted May 16, 2003 No, this isn't correct. You can use different impedances (resistor values) for every particular AIN pinBest Regards, Thorsten. Quote
TK. Posted May 16, 2003 Report Posted May 16, 2003 No, this isn't correct. You can use different impedances (resistor values) for every particular AIN pinBest Regards, Thorsten. Quote
rogic Posted June 3, 2003 Author Report Posted June 3, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kI replaced all resistors to 1K and still the same problem.I found a schematics upon I wired resistors (from some old thread):[br][br]and I connected all 7 of required buttons in following way:[br][br](that was old sketch, all pull-up resistors are now 1K)...What seems to be the problem here? ??? Quote
rogic Posted June 3, 2003 Author Report Posted June 3, 2003 Than lower the pull-up resistor for the button, than better the result. I would recomment 1kI replaced all resistors to 1K and still the same problem.I found a schematics upon I wired resistors (from some old thread):[br][br]and I connected all 7 of required buttons in following way:[br][br](that was old sketch, all pull-up resistors are now 1K)...What seems to be the problem here? ??? Quote
TK. Posted June 5, 2003 Report Posted June 5, 2003 Hm, so the reason is unclear, maybe a wiring problem or a bad soldering? Did you test the same inputs with the pots, just to ensure that they are working ok?Best Regards, Thorsten. Quote
TK. Posted June 5, 2003 Report Posted June 5, 2003 Hm, so the reason is unclear, maybe a wiring problem or a bad soldering? Did you test the same inputs with the pots, just to ensure that they are working ok?Best Regards, Thorsten. Quote
rogic Posted June 5, 2003 Author Report Posted June 5, 2003 Hm, so the reason is unclear, maybe a wiring problem or a bad soldering? Did you test the same inputs with the pots, just to ensure that they are working ok?They work ok, that's not the issue. When I turn on MB64, all of them work, but send sometimes more NoteOn messages. After a while (when I intentionally press more of them, just to test), some of them fail to work at all :( No pattern - ones which fail are different every time...When I restart mb64, every button work, but still sending more messages... :-/ Quote
rogic Posted June 5, 2003 Author Report Posted June 5, 2003 Hm, so the reason is unclear, maybe a wiring problem or a bad soldering? Did you test the same inputs with the pots, just to ensure that they are working ok?They work ok, that's not the issue. When I turn on MB64, all of them work, but send sometimes more NoteOn messages. After a while (when I intentionally press more of them, just to test), some of them fail to work at all :( No pattern - ones which fail are different every time...When I restart mb64, every button work, but still sending more messages... :-/ Quote
rogic Posted June 5, 2003 Author Report Posted June 5, 2003 Did you test the same inputs with the pots, just to ensure that they are working ok?I'll try with the pots just to be sure, but I think AIN works fine. Quote
rogic Posted June 5, 2003 Author Report Posted June 5, 2003 Did you test the same inputs with the pots, just to ensure that they are working ok?I'll try with the pots just to be sure, but I think AIN works fine. Quote
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