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1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 30,000 devices or 100,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
STD Intelligent Pedal Relay Bypass
License: Public Domain
Project source: Cloned from Smart Relay Bypass Board v2
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:
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.
ID | Name | Designator | Footprint | Quantity |
---|---|---|---|---|
1 | + | + | PAD1 | 1 |
2 | 330nF | C1 | C0805 | 1 |
3 | 100nF | C2 | C0805 | 1 |
4 | 100uF | C3 | 0632 | 1 |
5 | GND | GND | PAD1 | 1 |
6 | 78L05G | IC1 | SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR | 1 |
7 | ATTINY13 | IC2 | DIP08 | 1 |
8 | IJ | IJ | PAD1 | 1 |
9 | IN | IN | PAD1 | 1 |
10 | LED | LED | PAD1 | 1 |
11 | OJ | OJ | PAD1 | 1 |
12 | OUT | OUT | PAD1 | 1 |
13 | 2N3904 | Q1 | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | 1 |
14 | 10kΩ | R1 | R1206 | 1 |
15 | Switch | SW | MOMENTARY FOOTSWITCH | 1 |
16 | FTR-B4CB4.5Z | U1 | RELAY-TH_FUJITSU_FTR-B4C | 1 |
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