TK. Posted August 6, 2006 Report Share Posted August 6, 2006 So, which voltage do you get with the shift register - not the PIC - out?Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
cchocjr Posted August 7, 2006 Author Report Share Posted August 7, 2006 So, which voltage do you get with the shift register - not the PIC - out?Best Regards, Thorsten.With the shift register out, I get 5V from both the Select#5 and the Menu buttons normally, and 0V when I press each one down.Charles Quote Link to comment Share on other sites More sharing options...
TK. Posted August 7, 2006 Report Share Posted August 7, 2006 So, you get 5V without 74HC165, and/or without PIC. In addition, swapping the 74HC165 by another one doesn't change anything.According to this documentation: http://www.avishowtech.com/mbhp/mbhp_dinR3.html there is an option for resistor arrays ("SIL resistor packs"). Did you take care for the right orientation? There is maybe a dot on the array which is the "common" point - this one should be connected to +5VBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
cchocjr Posted August 7, 2006 Author Report Share Posted August 7, 2006 There IS a dot on the array, and I made sure to put all of them in---completely the WRONG F###ING WAY!I switched the two resistor networks associated with the shift register in question (because taking the networks out was a total, self-inflicted, pain-in-the-ass), and now it works like a charm! I hadn't even noticed those dots! My [limited] experience with resistors had me thinking that, since these networks had the word "resistor" in them, that, like resistors, it didn't really matter how you put them in. I stand corrected.Thanks Steve and TK so much for your help. This synth sounds like a dream, TK! You've done the weirdo-electronic-musician community a service that we can never repay!Now its time to start thinking about a stereo MB_SID! :)Thanks again, really. You have no obligation to help me at all, and yet you help more than many commerical synth companies every do. You rock...so hard!Charles Quote Link to comment Share on other sites More sharing options...
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