Bypass crossmix
About the Bypass crossmix PCB
Bypass crossmix is an open source PCB design by cosmoproject, published on GitHub. It is a 2-layer board measuring 70 × 50 mm, with 61 components from 26 distinct parts.
Other key parts include the TL074 and LM358. By type, the board carries 24 resistors, 20 capacitors, 8 connectors, 4 relays, 3 diodes and 2 ICs.
From the project
Relay stereo bypass and crossmixer
Crossmixer connection: Turn the pot completely to what you want to be "wet", and find the side where there is 0ohm to the center pin. This pin should be connected to pin 1 on the drywet on the PCB.
Main components on the Bypass crossmix
Bypass crossmix bill of materials (BOM)
61 components, 26 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TL074 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U2 |
| 1 | LM358 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U4 |
| 1 | STATUS LED | Pin_Header_Straight_1x03 | P1 |
| 1 | SWITCH | Pin_Header_Straight_1x03 | P2 |
| 1 | DRYWET | Pin_Header_Straight_2x03 | P3 |
| 1 | 9V | Pin_Header_Straight_1x02 | P5 |
| 1 | OUT | Pin_Header_Straight_1x04 | P6 |
| 1 | RECEIVE | Pin_Header_Straight_1x04 | P7 |
| 1 | IN | Pin_Header_Straight_1x04 | P8 |
| 1 | SEND | Pin_Header_Straight_1x04 | P9 |
| 4 | RELAY-HLS8L-DC5V-S-C(5P-19X15MM) | REY5-19.0X15.0X15.0MM | K1, K2, K3, K4 |
| 1 | D | SMA_Handsoldering | D1 |
| 1 | RED | LED-0603 | D2 |
| 1 | GREEN | LED-0603 | D3 |
| 9 | 100u | C_Radial_D5_L11_P2 | C1, C2, C3, C4, C6, C7, C8, C9 +1 |
| 2 | C | C_0603_HandSoldering | C5, C11 |
| 3 | 100n | C_0603_HandSoldering | C12, C13, C20 |
| 2 | 10n | C_0603_HandSoldering | C14, C15 |
| 4 | 100p | C_0603_HandSoldering | C16, C17, C18, C19 |
| 2 | 180 | R_0603_HandSoldering | R1, R15 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 150 | R_0603_HandSoldering | R2, R22 |
| 10 | 47k | R_0603_HandSoldering | R3, R4, R6, R7, R9, R10, R12, R13 +2 |
| 4 | 1M | R_0603_HandSoldering | R5, R11, R18, R21 |
| 2 | 100k | R_0603_HandSoldering | R8, R14 |
| 2 | 470 | R_0603_HandSoldering | R19, R20 |
| 2 | 12 | R_0603_HandSoldering | R23, R24 |
Bypass crossmix design files
The KiCad project lives in the cosmoproject/bypass_crossmix repository on GitHub; these links point at the commit this page was built from.
Bypass crossmix: common questions
How big is the Bypass crossmix PCB?
The Bypass crossmix measures 70 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bypass crossmix?
61 components, from 26 distinct parts. The full bill of materials is listed on this page.
Where can I download the Bypass crossmix design files?
From the cosmoproject/bypass_crossmix repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Bypass crossmix design in my own project?
The repository has no license, so all rights stay with cosmoproject. Use it as a reference, and ask the author before reusing the design.