ANC Helmet - MEMS mic carrier (x4)
About the ANC Helmet - MEMS mic carrier (x4) PCB
ANC Helmet - MEMS mic carrier (x4) is an open source PCB design by baba2712, published on GitHub under the MIT license. It is a 2-layer board measuring 11 × 13.2 mm, with 4 components from 4 distinct parts.
By type, the board carries 2 capacitors, 1 connector and 1 microphone.
From the project
An industrial safety helmet with hybrid active noise cancellation (feed-forward + adaptive feedback FxLMS) on an STM32H743. Target: take ~100 dB(A) plant noise down to ≤ 75 dB(A) at the ear (passive earcup + ANC), below the 85 dB(A) 8-hour limit. Also a built-in noise dosimeter,
An industrial safety helmet with hybrid active noise cancellation (feed-forward + adaptive feedback FxLMS) on an STM32H743. Target: take ~100 dB(A) plant noise down to ≤ 75 dB(A) at the ear (passive earcup + ANC), below the 85 dB(A) 8-hour limit. Also a built-in noise dosimeter, hear-through for speech and alarms, a seal monitor that measures the cup's attenuation while it is worn and warns when the seal leaks (glasses, hair, a tilted helmet), and an optional BLE link.
ANC Helmet - MEMS mic carrier (x4) bill of materials (BOM)
4 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | JST SM04B-SRSS-TB MIC | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J1 |
| 1 | IM73A135V01XTSA1 IM73A135V01 | Infineon_PG-LLGA-5-2 | MK1 |
| 1 | 100n X7R 100n | C_0402_1005Metric | C1 |
| 1 | 1u X5R 1u | C_0402_1005Metric | C2 |
ANC Helmet - MEMS mic carrier (x4) design files
The KiCad project lives in the baba2712/smart-helmet-with-anc repository on GitHub; these links point at the commit this page was built from.
ANC Helmet - MEMS mic carrier (x4): common questions
How big is the ANC Helmet - MEMS mic carrier (x4) PCB?
The ANC Helmet - MEMS mic carrier (x4) measures 11 × 13.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ANC Helmet - MEMS mic carrier (x4)?
4 components, from 4 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ANC Helmet - MEMS mic carrier (x4) design files?
From the baba2712/smart-helmet-with-anc repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the ANC Helmet - MEMS mic carrier (x4) design in my own project?
Yes, under the terms of its MIT license, which baba2712 chose for the repository.
