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ANC Helmet - satellite board (right earcup)

baba2712·smart-helmet-with-anc·hardware/satellite-board/satellite-board.kicad_pcb

ANC Helmet - satellite board (right earcup) layout, top view — open source board by baba2712
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About the ANC Helmet - satellite board (right earcup)

ANC Helmet - satellite board (right earcup) is an open source PCB design by baba2712, published on GitHub under the MIT license. It is a 2-layer board measuring 34 × 26 mm, with 42 components from 20 distinct parts.

Other key parts include the MCP6001T-I/OT and MCP6022-I/ST. By type, the board carries 18 capacitors, 17 resistors, 4 connectors and 3 ICs.

It belongs with the rf & radio designs in this gallery.

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.

Main components on the ANC Helmet - satellite board (right earcup)

MCP6001T-I/OTMCP6022-I/ST

ANC Helmet - satellite board (right earcup) bill of materials (BOM)

42 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP6001T-I/OT
MCP6001
U1
2
MCP6022-I/ST
MCP6022
U2, U3
1
JST SM06B-SRSS-TB
TO MAIN BOARD
J1
1
JST SM02B-SRSS-TB
RIGHT SPEAKER
J2
1
JST SM04B-SRSS-TB
RIGHT OUTSIDE (REF) MIC
J3
1
JST SM04B-SRSS-TB
RIGHT IN-CUP (ERR) MIC
J4
2
10u X5R
10u
C1, C2
3
100n X7R
100n
C3, C11, C18
5
1u X7R
1u
C4, C5, C6, C12, C13
2
220p C0G
220p
C7, C8
2
4.7n C0G
4.7n
C9, C16
2
1n C0G
1n
C10, C17
2
100p C0G
100p
C14, C15
2
10k 1% 02_1
10k
R1, R2
1
10 1% 02_1
10
R3
4
22k 1% 02_1
22k
R4, R5, R11, R12
2
75k 1% 02_1
75k
R6, R7
4
8.2k 1% 02_1
8.2k
R8, R9, R15, R16
2
100 1% 02_1
100
R10, R17
2
150k 1% 02_1
150k
R13, R14

ANC Helmet - satellite board (right earcup) 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 - satellite board (right earcup): common questions

How big is the ANC Helmet - satellite board (right earcup)?

The ANC Helmet - satellite board (right earcup) measures 34 × 26 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ANC Helmet - satellite board (right earcup)?

42 components, from 20 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 - satellite board (right earcup) 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 - satellite board (right earcup) design in my own project?

Yes, under the terms of its MIT license, which baba2712 chose for the repository.

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