marwis Posted July 20, 2014 Report Posted July 20, 2014 Hi, ich have build the AOUT_NG for my Seq4, but no CV on any Pin goes out. In CV menu AOUT_NG is selected. Gate is ok. Soldering is ok, no bridges or disconnections. I measured directy on JP1 the DAC output, but no voltage are here. The connection between J1 on AOUT_NG and J19 on LPC17 now is ok (Pin3 on RC1), for the first time I have connect Pin3 to SO, Pin4 to SC and Pin5 to RC1 :-(. Is my DAC damaged now? Have anybody a idea? txh markus Quote
Highcooley Posted July 22, 2014 Report Posted July 22, 2014 Hi Markus How long is your cable between the LPC17 and the AOUT_NG? I had some trouble in the beginning, when I had a cable which was longer than 10-20cm. I don't see any reason, why you should have damaged the chip with the wrong connection you mentioned. As long as you don't connect these pins to +/-12V, you should be save. cheers Andy Quote
marwis Posted July 23, 2014 Author Report Posted July 23, 2014 Problem solved! USB Power is to low, if i use external Power, everything is ok. Thanks for help. Quote
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