DMH Mixer
About the DMH Mixer PCB
DMH Mixer is an open source PCB design by DeMarco, published on GitHub. It is a 2-layer board measuring 48 × 156 mm, with 44 components from 18 distinct parts.
Other key parts include the TL072. By type, the board carries 13 resistors, 12 capacitors, 5 connectors, 5 switches, 4 diodes and 1 IC.
From the project
Simple OpAmp based Mixer module
Main components on the DMH Mixer
DMH Mixer bill of materials (BOM)
44 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TL072 | DIP-8_W7.62mm_Socket | U1 |
| 1 | Conn_01x01 | PinHeader_1x01_P2.54mm_Vertical | J0 |
| 2 | Conn_01x08 | PinSocket_1x08_P2.54mm_Vertical | J50, J60 |
| 1 | IDC_02x05 | IDC-Header_2x05_P2.54mm_Vertical_Eurorack | J100 |
| 1 | IDC_02x05 | IDC-Header_2x05_P2.54mm_Vertical_BackBone | J200 |
| 4 | 100k | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2, RV3, RV4 |
| 4 | SW_SPDT_321 | Toggle_Switch_THT | SW1, SW2, SW3, SW4 |
| 1 | SW_DPDT | Toggle_Switch_2_Poles_THT | SW5 |
| 1 | SB140+ | D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | SB140- | D_DO-41_SOD81_P10.16mm_Horizontal | D2 |
| 2 | ZPD3V9 | D_DO-35_SOD27_P7.62mm_Horizontal | D3, D4 |
| 2 | 47uF | CP_Radial_D5.0mm_P2.00mm | C1, C2 |
| 4 | 100nF | C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C4, C5, C6 |
| 4 | 1uF | C_Disc_D4.3mm_W1.9mm_P5.00mm | C7, C8, C9, C10 |
| 2 | 47pF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C11, C12 |
| 8 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R3, R5, R7, R9, R10, R11, R12 |
| 4 | 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R4, R6, R8 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R13 |
DMH Mixer design files
The KiCad project lives in the DeMarco/DMH-Mixer repository on GitHub; these links point at the commit this page was built from.
DMH Mixer: common questions
How big is the DMH Mixer PCB?
The DMH Mixer measures 48 × 156 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DMH Mixer?
44 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the DMH Mixer design files?
From the DeMarco/DMH-Mixer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the DMH Mixer design in my own project?
The repository has no license, so all rights stay with DeMarco. Use it as a reference, and ask the author before reusing the design.
