FantomXR Posted October 16, 2015 Report Share Posted October 16, 2015 (edited) Hey people,I have some trouble with self designed PCBs. I have three DOUT SRs which power 8 LED rings perfectly. The first SR is equipped with a ULN2803 as driver. This works as expected.Now I want to connect the encoders and switches to it. I add a DIN-PCB but as soon as I connect the 10pin IDC of the switches to the DIN, the LED-rings go off. There is just one LED, that is still bright. If I disconnect the ULN-PCB, nothing changes. Still this LED is on.BTW: The switches are working! If I set debug modus on I see that the PCB works as expected... just that the LED-rings go off is really not clear for me. I'll add the schematics here later on.Just a question: Are RC1 and RC2 are supposed to be soldered together like in this schematic:http://ucapps.de/mbhp/mbhp_dinx4_r5.pdfI have them seperated (DOUT got RC1, DIN RC2).Maybe somebody has a hint for me?Thanks,Chris Edited October 16, 2015 by FantomXR Quote Link to comment Share on other sites More sharing options...
Zam Posted October 16, 2015 Report Share Posted October 16, 2015 Hi ChrisTo me DIN and DOUT share the same clock which is RC1 (core J8/9) pin 10I don't know about J1 DIN rev 5 schematic, maybe a mistake, or compatibility with previous rev with single row J1 connector.If you look at DOUT rev5 or IOmatrix shemo, J1 clearly connect ONLY RC1 pin10 to the shift register deviceI think I read you can separate RC line for IN and OUT with appropriate modification at soft side, but I let this to the soft guys :)BestZam Quote Link to comment Share on other sites More sharing options...
FantomXR Posted October 16, 2015 Author Report Share Posted October 16, 2015 Thanks for the reply! Then I will try that tomorrow...Anyway... here are the files. The 2x DOUT is not equipped with ULN but with 220Ohm resistors. Quote Link to comment Share on other sites More sharing options...
FantomXR Posted October 17, 2015 Author Report Share Posted October 17, 2015 I checked now with original Midibox PCBs... same problem. So it seems there is a mistake in the encoder-PCB... but I don't see it... Quote Link to comment Share on other sites More sharing options...
FantomXR Posted October 17, 2015 Author Report Share Posted October 17, 2015 I finally found the problem... there was a short on the EncoderPCB... now everything works fine :-) Quote Link to comment Share on other sites More sharing options...
Zam Posted October 17, 2015 Report Share Posted October 17, 2015 solved!cool :) Quote Link to comment Share on other sites More sharing options...
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