Author Topic: Building the Uglyface PCB  (Read 31134 times)

telebiker

Re: Building the Uglyface PCB
« Reply #80 on: January 25, 2021, 08:16:59 PM »
I decided to verify the PCB without LFO firstly, and found that sensivity pot was not working. I used recommended components (JRC386D, NSL-32). Firstly I replaced NSL-32 to the LED/LDR pair and saw that the LED was changing its brightness, but the sound still was not affected by the sensivity pot. I replaced JRC386D with another one and it worked. For the sake of interest I tried another NSL-32 and it was not working again.

Probably I had malfunctioning NSL-32s (common problem AFAIK). And probably I burnt JRC386D or it was bad too. I used GL5528 and a yellow diffused LED as an opto and it worked well.

Still investigating LFO issues.