check in
Ongoing

Intelligent Pedal Relay Bypass

STDIntelligent Pedal Relay Bypass

tag

1.1k
0
0
2
Mode:Full

License

Public Domain

Creation time:2023-07-04 17:32:31Update time:2023-10-25 00:37:57

Description

A cheap but powerful relay bypass board for guitar effect pedals. In addition to being able to do basic true bypass functionality, it also has the following capabilities:

 

  • Quick tap to switch between engaged and bypass, or hold the foot switch to temporarily toggle engage/bypass until you release
  • Hold when powering on to toggle auto-on/auto-off
  • Remebers state when powered off
  • Small footprint (28.4 mm x 20.3 mm) that fits neatly under an SPST switch
  • Neatly labeled and arranged input/output pads that line up neatly with PCBs from vendors like PedalPCB

 

This board is designed to use an inexpensive, reliable latching relay that's available from LCSC/JLCPCB.  All of the components except for the microcontroller and electrolytic capacitor are pre-selected for assembled by JLCPCB, with every component except for the relay being basic components. For my most recent order, the total cost per unit, including the SPST foot switch, microcontroller, and assembled PCB, was less than $4. That's basically the same price as a 3PDT foot switch.

Here are the components that you will need to purchase separately if you get the board assembled by JLCPCB:

 

 

You can write the programming for the microcontrollers yourself or you can grab this ready-to-use code from Github. You can also buy pre-programmed microcontrollers from MAS Effects.

Design Drawing

The preview image was not generated, please save it again in the editor.

BOM

Bom empty

Attachments

OrderFile nameDownload times
No data
Clone
Add to Album
0
0
Share
Report

Project Members

Comment

All Comments(1)
Sort by time|Sort by popularity
Followers0|Likes0
Related projects
Empty

Bottom Navigation