QuadMod Controls
About the QuadMod Controls PCB
QuadMod Controls is an open source PCB design by dchwebb, published on GitHub. It is a 2-layer board measuring 70.6 × 110.8 mm, with 24 components from 13 distinct parts.
By type, the board carries 12 connectors, 2 LEDs and 1 switch.
It belongs with the audio designs in this gallery.
From the project
Eurorack 4 voice effects processor based on STM32H563
Quadmod is a Eurorack modular four channel effect module. A modulation section allows either phasing or flanging followed by a delay. As part of the Mountjoy Modular polyphonic range the module uses a series of intermodulation paths to convert a four channel input to a stereo output.
Quadmod uses an STM32563 microcontroller which controls a four channel Audio Codec (AsahiKasei AK4619) using SPI for configuration and SAI (Serial Ausio Interface) peripheral to manage the 4 in and 4 out I2S audio streams. The microcontroller reads the front panel controls with internal 12 bit ADCs.
QuadMod Controls bill of materials (BOM)
24 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | Conn_01x08_Pin | PinSocket_1x08_P2.54mm_Vertical | J1, J2, J3, J4 |
| 1 | Delay_Time | THONKICONN_hole | J5 |
| 1 | Delay_Filter | THONKICONN_hole | J6 |
| 1 | LFO_BaseFreq | THONKICONN_hole | J7 |
| 1 | FX_Feedback | THONKICONN_hole | J8 |
| 1 | LFO_Speed | THONKICONN_hole | J9 |
| 1 | Audio_Out_L | THONKICONN_hole | J10 |
| 1 | Audio_Out_R | THONKICONN_hole | J11 |
| 1 | Audio_In | RJ45_Molex_42878-8506 | J13 |
| 9 | B10k | Alpha_9mm_Potentiometer_Aligned | Delay_Feedback_Pot1, Delay_Filter_Pot1, Delay_Mix_Pot1, Delay_Time_Pot1, FX_Feedback_Pot1, FX_Mix_Pot1, LFO_BaseFreq_Pot1, LFO_Range_Pot1 +1 |
| 1 | FX_Type_Switch | SPDT_Miniature | SW1 |
| 1 | LED_Dual_AKA | LED_D3.0mm-3 | Delay_LED1 |
| 1 | LED | LED_D3.0mm | FX_LED1 |
QuadMod Controls design files
The KiCad project lives in the dchwebb/QuadMod repository on GitHub; these links point at the commit this page was built from.
QuadMod Controls: common questions
How big is the QuadMod Controls PCB?
The QuadMod Controls measures 70.6 × 110.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the QuadMod Controls?
24 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the QuadMod Controls design files?
From the dchwebb/QuadMod repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the QuadMod Controls design in my own project?
The repository has no license, so all rights stay with dchwebb. Use it as a reference, and ask the author before reusing the design.
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