Enclosure not stated
PIC Relay Bypass
Based on the PIC Relay Bypass
From the post
If you feel like getting into a bit of programing with your pedal building, this is probably a good place to start. The legwork was done and graciously shared by Coda Effects. It uses a PIC micro-controller to trigger a relay and LED indicator. To learn how to program the PIC12F675 read the original blog post on Coda Effects. Benoit has since updated the schematic, adding a photoFET to get rid of a pop that happened when triggered. So you'll need to read and use the code from this post as well. Thanks again to Benoit for sharing his code and all his hard work!
Update March 2, 2017: Benoit updated his schematic and code recently, so I've updated the layout to reflect that, as well as the hyperlinks above to the correct code.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 9 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 3 | ||||
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| Capacitors 1 | ||||
| ×1 | 47uF | 47u | electrolytic, drawn laid flat; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4148 | 1N4148 | read from the layout by eye | |
| ICs 2 | ||||
| ×1 | PIC12F675 | PIC12F675 | read from the layout by eye | |
| ×1 | 78L05 | 78L05 | regulator; read from the layout by eye | |
| Opto 1 | ||||
| ×1 | TLP222A | TLP222A | photo relay; read from the layout by eye | |
| Other 1 | ||||
| ×1 | Takamisawa NA5W-K | TAKAMISAWA NA5W-K | DPDT relay; read from the layout by eye | |