I am done building my DIY lich but have a problem I can’t debug.
I went through the smoke test and passed. But when I finally mounted the owl board there was nothing. No lights no sound. Just a quick dim flash from my 7 segment screen. (The screen is right side up by the way).
When I remove the owl board and plug the module in, the red LED near the jacks lights up. I feel like something is not allowing the power to get to the owl board. Like when the owl board circuit is locked in, the circuit gets weird and dies out somewhere.
There is this 5v being passed around all over the place and it doesn’t make it to the power header pin just above C11. Maybe its not supposed to be there? Its just that is says 5v there on the board. I am wondering if my potentiometers are touching some solder joints since they are mounted on the opposite of component side. When I peer under there though I don’t find anything :(.
My questions are:
Is there a more readable schematic somewhere that would allow me to visualise the physical relationship between the actual board and schematic other than: https://befaco.org/docs/Lich/Lich_V1_sch.pdf
How do you suggest I debug this? I’m used to debugging software and usually try to follow the stack trace from a function call to the point of failure. What is the electronics equivalent of that? Probably just reading the schematic and trying to make sure that various voltage readings are correct along the path?
My board does not respond when plugging directly into a computer. This is ok right? The owl board requires power through the pins it seems from other posts here.
If the owl requires power through the pins where does it enter the board? Is that even the right question?? Which pins should I test for what values when the module is powered?
Another issue I’m struggling to rule out is a continuity reading between Q1 and R29 and Q2 and R26. But then it seems that they’re supposed to be continuous because in the schematic they seem to be connected in a circuit. I believe I fixed the solder bridge here but I can’ tell.
I’m struggling a lot with this module. It was definitely a poor choice for a beginner but I am so so ok with struggle if I can get it working. This open Owl platform thing is like a dream come true and I am really really excited to start writing patches for Owl. I just wish I could get passed this hurdle!