First, thank you for making such a nice project.
My new built Shruthi has some strange issues:
1/ Values are flickering on the screen, value of the pot #2 seems to be changing continuously, especially when turned all the way clockwise or so
2/ Press button 1 > osc1 properties, then press again > osc2 properties, then press again > freeze or instant reboot; sometimes I can access the osc mix page.
3/ There is sound, even if I set osc1 & osc2 to “none”, like a saw-wave maybe. I need to trigger a midi note to get this behaviour. The pitch doesn’t change with midi-note, but the frequency of the filter changes accordingly. The sound is correctly affected by cutoff & resonance parameters. So, I have a “ghost oscillator”, so to speak.
- I have access to a DSO nano oscilloscope, I see 39.21 KHz on vca & osc pins of the digital board.
- The volume of the sound is shaped by envelope2
- If I remove the pole-selection jumper, the sound is still there but attenuated.
- Voltage values are good
I don’t understand where is my mistake, could you please give me a direction ?