Thanks guys, I'm going to check all those out.
Here's the funny thing. I went and plugged the 2nd coppachino pcb in, and it worked in that it seemed to have volume, and some low level farty distortion. As I was using an BC549C (and have plenty of those, or did..) , I thought I would switch it around and see if that made a difference. Annnnd, no.. didn't work at all. Swapped a new one in around the proper way (reverse to the silkscreen) and was back at the low volume no dirt result.
I have one more Coppachino board to try. He tells me it's verified. I'm sure it is, I should try and get hold of the proper 2n5008 I guess. I have a 2n2222 kicking around.
No proper troubleshooting really beyond "that's all in the right spot and there's no solder bridges".
Laughing at the EM-drive. Five components, 2 pots. Pretty certain I've got all the parts for it here.
Here's the funny thing. I went and plugged the 2nd coppachino pcb in, and it worked in that it seemed to have volume, and some low level farty distortion. As I was using an BC549C (and have plenty of those, or did..) , I thought I would switch it around and see if that made a difference. Annnnd, no.. didn't work at all. Swapped a new one in around the proper way (reverse to the silkscreen) and was back at the low volume no dirt result.
I have one more Coppachino board to try. He tells me it's verified. I'm sure it is, I should try and get hold of the proper 2n5008 I guess. I have a 2n2222 kicking around.
No proper troubleshooting really beyond "that's all in the right spot and there's no solder bridges".
Laughing at the EM-drive. Five components, 2 pots. Pretty certain I've got all the parts for it here.