Atom mic
About the Atom mic PCB
Atom mic is an open source PCB design by washishi, published on GitHub under the MIT license. It is a 2-layer board measuring 20 × 15.4 mm, with 12 components from 12 distinct parts.
By type, the board carries 5 connectors, 5 jumpers and 1 capacitor.
From the project
Microphone board for M5Atom series
また各ピンの隣のランド(J3,J4)はそれぞれ同じピンに接続されていますので さらに別へ接続したい場合や接続先ピンの変更等に利用できます # 接続先ピン変更、マイクデータのタイミング変更について JP1のパターンカットおよび接続変更によりPDMマイクのデータタイミングの変更ができます (元々PDMマイクは同じバス上にデータタイミングの異なる2つのマイクが接続できる仕様となっています) また各接続先はJP2～JP5のパターンカットにより切り離せるようになっており 切り離して下図の赤色側のランドをUEW線等で別のピンに繋ぐことにより接続先を変更することができます |JP|用途|説明| |:--|-|:--| |JP1|マイク Select|デフォルトは中央の端子がGND(▽側)に繋がっていますがパターンカットして反対側(3V3)に繋ぐことによりデータタイミングが変わります| |JP2|マイク Clock|PDMマイクのClockピンへの接続| |JP3|マイク Data |PDMマイクのDataピンへの接続| |JP4|Grove PIN1 |Groveコネクタ(J5)のPIN1(白)への接続| |JP5|Grove PIN2 |Groveコネクタ(J5)のPIN2(黄)への接続|
Atom mic bill of materials (BOM)
12 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X04_PIN Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | CONN_01X05_PIN Conn_01x05_Pin | PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | CONN_01X04_SOCKET Conn_01x04_Socket | PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | CONN_01X05_SOCKET Conn_01x05_Socket | PinSocket_1x05_P2.54mm_Vertical | J4 |
| 1 | HY2.0-4P | CON_GROVE_H | J5 |
| 1 | DATA SELECT | SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1 |
| 1 | CLK | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
| 1 | DAT | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3 |
| 1 | GR1PIN Gr1PIN | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP4 |
| 1 | GR2PIN Gr2PIN | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP5 |
| 1 | SPH0641LU4H-1 | Knowles_LGA-5_3.5x2.65mm | MIC1 |
| 1 | 0.1U 0.1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
Atom mic design files
The KiCad project lives in the washishi/atom_mic repository on GitHub; these links point at the commit this page was built from.
Atom mic: common questions
How big is the Atom mic PCB?
The Atom mic measures 20 × 15.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Atom mic?
12 components, from 12 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 Atom mic design files?
From the washishi/atom_mic 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 Atom mic design in my own project?
Yes, under the terms of its MIT license, which washishi chose for the repository.
