Microphone
About the Microphone PCB
Microphone is an open source PCB design by ERC-BPGC, published on GitHub. It is a 2-layer board measuring 56 × 34 mm, with 12 components from 9 distinct parts.
Other key parts include the UA741. By type, the board carries 5 resistors, 3 capacitors, 2 connectors, 1 IC and 1 microphone.
It belongs with the robotics & motion and wearables designs in this gallery.
From the project
Project VULCAN is an open humanoid robotics platform focused on expressive human-robot interaction through modular mechanical, electronic, and AI-driven subsystems. It is a humanoid robot facial structure that can interact with humans — tracking faces, expressing emotions, hearin
Project VULCAN is an open humanoid robotics platform focused on expressive human-robot interaction through modular mechanical, electronic, and AI-driven subsystems. It is a humanoid robot facial structure that can interact with humans — tracking faces, expressing emotions, hearing and speaking.
Actively undergoing infrastructure modernization and subsystem stabilization before next-generation expansion.
Main components on the Microphone
Microphone bill of materials (BOM)
12 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | UA741 | DIP-8_W10.16mm | U2 |
| 2 | Screw_Terminal_01x02 | PinHeader_1x02_P2.54mm_Vertical | J1, J2 |
| 1 | Microphone_Condenser | PinHeader_1x02_P2.54mm_Vertical | MK1 |
| 1 | 100nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | 10uF | CP_Radial_D8.0mm_P5.00mm | C2 |
| 1 | 8uF | CP_Radial_D8.0mm_P5.00mm | C3 |
| 3 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 1 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
Microphone design files
The KiCad project lives in the ERC-BPGC/project-vulcan repository on GitHub; these links point at the commit this page was built from.
Microphone: common questions
How big is the Microphone PCB?
The Microphone measures 56 × 34 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Microphone?
12 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Microphone design files?
From the ERC-BPGC/project-vulcan repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Microphone design in my own project?
The repository has no license, so all rights stay with ERC-BPGC. Use it as a reference, and ask the author before reusing the design.
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