Free Shipping on orders over $99 (US only)

Relay Bypass Module
Relay Bypass Module
Relay Bypass Module
  • Load image into Gallery viewer, Relay Bypass Module
  • Load image into Gallery viewer, Relay Bypass Module
  • Load image into Gallery viewer, Relay Bypass Module

Relay Bypass Module

Regular price
$12.50
Sale price
$12.50
Regular price
Sold out
Unit price
per 

This is a true-bypass relay bypass kit for your DIY pedals. It has EQD-style hold functionality, optional optocoupler muting, and more.

Kit includes everything you need except the foot switch:

  • Relay
  • Voltage regulator
  • Capacitor
  • PCB with pre-soldered SMD components
  • Pre-programmed microcontroller

Build docs here: https://mas-effects.com/relay.pdf

---------

Updated firmware: This will be shipped with an updated version of the firmware with an additional feature: By default it will remember the state of your pedal (bypass or engaged), and it uses a "wear leveling" technique to write to each EEPROM location as few times as possible to ensure it keeps working forever.

Holding the foot switch while powering it up will toggle between auto-on (3 LED blinks), auto-off (4 blinks), and memory (5 blinks).

---------

OPTOCOUPLER NOTES:

The TLP222G optocoupler is optional, and mutes the signal briefly while switching. However we're no longer carrying it because

1. It's rarely helpful for most people. It's usually better and easier to fix the root cause of a pop than get the duration and timing of this muting behavior working correctly

2. The part has been discontinued. We'll need to redesign the board to work with an alternate part, but it's not worthwhile because of (1) above.

HOWEVER... if you want to source your own optocoupler, click the "Enable optocoupler code" option otherwise your firmware will not utilize it.

  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart
  • none
    Add to Cart