- messsung 2 verschiedende welllenformen:
R51 muss 51K sein statt 430ohm - R2 51k zu 36K
- 36K U1 pin6
muff: http://electro-music.com/forum/topic-18587-100.html
I've taken the board out, and have gone over it. No wrong resistors. Bear in mind that this is a copy of Dave Brown's build (and using his BOM), so there are some resistor changes - specifically R2 changed from 51K to 36K, and R51 is changed from 430 to 51K. There is also a 36K resistor added at pin 6 of U1. Would any of these make this effect? (Feel free to chime in, Dave, if you had a similar problem - probably not though)
to test at issues:
http://electro-music.com/forum/viewtopic.php?t=18587&postorder=asc&start=375
racing the signal along the VCO structure:(U9, pin 7 is listed twice)
U8, pin 7: triangle. (You have that.)----yes was a triangle
U9, pin 7: triangle - yes or no?-----yes is a triangle (U9 pin7)
U9, pin 1: square wave - yes or no?
Pin 1 - My fault - that was a typo. Square wave?