This is a true-bypass relay bypass kit for your DIY pedals. It has EQD-style hold functionality, optional optocoupler muting, and more.
See more details here: https://mas-effects.com/relay-bypass/
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NOTE: 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).
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3 packages are available:
- $12.50 - Bring your own foot switch, but otherwise everything you need. Does NOT include muting optocoupler for guitar effects that pop when switched (most don't, and it's usually easy to remedy with a pull down resistor on the input).
- $15.50 - Includes foot switch
- $18 - includes foot switch and muting optocoupler.
All kits include:
- Relay
- Voltage regulator
- Capacitor
- PCB with pre-soldered SMD components
- Pre-programmed microcontroller
Build docs here: https://mas-effects.com/relay.pdf