4 layers55.4 × 28.6 mm
4 layers61 × 68.8 mm
WDM(RevB V1)
ColbyDAllen/Wearable-Drum-MachineThis project is mostly complete. Until I can find a more suitable input/sensory solution, please consider this work on hiatus.
- Size
- 61 × 68.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 114
- Nets
- 157
- Pads
- 429
- Tracks, vias
- 1,074, 154
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Sep 2023
- Updated
- 25 Apr 2026
Overview
WDM(RevB V1) is an open-source printed circuit board by ColbyDAllen, from the ColbyDAllen/Wearable-Drum-Machine repository on GitHub. It is a 4-layer board of 61 × 68.8 mm with 114 parts on 157 nets, routed with 1,074 tracks and 154 vias.
It is built around the MCP73871EV, PAM8302AASCR and SGTL5000XNBA3R2, with the W25Q128JVSIQ, KMR211GLFS and SJ-3542AS-SMT-TR-67 among its other parts. Its parts include 43 resistors, 20 capacitors, 10 diodes, 9 connectors and 7 ICs.
Main components
10MCP73871EV
-ModulesMicrochip Technology
PAM8302AASCR
MSOP-8-40℃~+85℃ 0.3% 1-Channel 2.5Wx1@4Ω 2V~5.5V 4mA 50dB 80dB 85% Class D Filterless architecture MSOP-8 Audio Amplifiers ROHSDiodes IncorporatedAudio Amplifiers
SGTL5000XNBA3R2
SOT-617-27-40℃~+85℃ 1.1V~2V、1.62V~3.6V 8kHz~96kHz Built-in phase-locked loop、On-chip digital gain、Mute control Encoder/decoder I2S、I2C、SPI SOT-617-27 Audio Interface ICs ROHSNXP SemiconductorsAudio Interface ICs
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
KMR211GLFS
SMD-40℃~+85℃ 1.2N 2.6mm 200,000 Cycles 32V 4.2mm 50mA Gull Wing No Round Button SPST-NO Surface Mount,Vertical Without Bracket SMD Tactile Switches ROHSC&KTactile SwitchesSJ-3542AS-SMT-TR-67
SMD-25℃~+85℃ 12V 14.65mm 1A 3.5mm Headphone Jack 4.45mm 9.2mm Copper Alloy Gold Right-Angle TRRS SMD Audio Connectors ROHSCUIAudio Connectors (Headphones)
MPZ2012S601AT000
0805-55℃~+125℃ 1 100mΩ 2A 600Ω@100MHz ±25% 0805 Ferrite Beads ROHSTDKFerrite Beads
PEC11R-4215F-S0024
插件-30℃~+70℃ 10mA 24/24 5V Incremental Straight Two-phase output 插件 Rotary Encoders ROHSBournsRotary EncodersPOM-5046P-C3310-R
--46dB@±3dB 5.2mm 500uA 55dB 6mm Omnidirectional - Microphones ROHSPUI Audio, Inc.MicrophonesSJ-3541AS-SMT-TR-67
SMD,P=2.45mm-25℃~+85℃ 12V 1A 3.5mm Headphone Jack Copper alloy Gold SMD,P=2.45mm Audio Connectors ROHSCUIAudio Connectors (Headphones)
README
README.mdWearable Drum Machine
12/15/2024 |
This project is mostly complete. Until I can find a more suitable input/sensory solution, please consider this work on hiatus.
Further information can be found at www.colbydanielallen.com.
4/15/2024 |
This project is still in development.
On the hardware side, I'm focused on creating more reliable FSR finger sensors. Weather resistant (magentic charger?) enclosure design is backlogged.
On the circuitry side, I'm designing a custom PCB that incorporates power management, sensor/usb/programmig ports, and an embedded speaker module.
On the software side there's a number of backlogged tasks. I want to fine-tune / build-out the MIDI looping functionality and create a richer way to sequence these patterns. Variable tempo control in standalone operation (via rotary encoder) is also backlogged.
04/01/2024 | Regarding software/code: Until I've split these up into functional sections, the .ino sketches will build on each other in the following order:
- FSR Input
- SMF File Storage
- MIDI Looper
Parts
114| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 10K | WDM_Components:RES_10K_R0805 | R14, R15, R16, R17, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30 +1 |
| 9 | 2.2K | WDM_Components:RES_2.2K_0805 | R31, R32, R33, R34, R35, R36, R39, R40, R43 |
| 9 | KMR211GLFS | WDM_Components:PushButton_KMR211_G_LFS_CNK | SW_1, SW_2, SW_3, SW_4, SW_5, SW_6, SW_7, SW_8, SW_9 |
| 5 | 0.1 uF | WDM_Components:C_0.1uF_0805_10MGAP | C2, C10, C11, C18, C19 |
| 5 | 1K | WDM_Components:RES_1K_0805 | R6, R7, R8, R9, R12 |
| 5 | 2.2 uF | WDM_Components:C_2.2uF_0805-NO | C4, C9, C12, C17, C20 |
| 4 | 10 uF | WDM_Components:C_10uF_0805-NO | C1, C3, C6, C16 |
| 4 | SJ-3542AS-SMT-TR-67 | WDM_Components:CUI_SJ-3542AS-SMT-TR-67 | J3, J6, J7, J11 |
| 3 | 100R | WDM_Components:RES_100R_R0805 | R38, R41, R42 |
| 3 | BLUE | WDM_Components:CHIPLED_0805_NOOUTLINE | D4, D8, D10 |
| 3 | JUMPER-SMT_2_NC_TRACE_SILK | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1, JP2, JP3 |
| 2 | 1 uF | WDM_Components:C_1uF_0805 | C14, C15 |
| 2 | 1.87M | WDM_Components:RES_1.87M_0805 | R1, R4 |
| 2 | 100 nF | WDM_Components:C_100nF_0805 | C7, C8 |
| 2 | 100K | WDM_Components:RES_100K_0805 | R11, R13 |
| 2 | 200K | WDM_Components:RES_200K_0805 | R3, R5 |
| 2 | GREEN | WDM_Components:CHIPLED_0805_NOOUTLINE | D3, D6 |
| 2 | RED | WDM_Components:CHIPLED_0805_NOOUTLINE | D1, D5 |
| 2 | YELLOW | WDM_Components:CHIPLED_0805_NOOUTLINE | D7, D9 |
| 2 | ~ | WDM_Components:1X01_BatteryTerminal_HandSolder | J4, J5 |
| 1 | +3V3 | WDM_Components:TestPoint_PAD.03X.05 | TP7 |
| 1 | +3v3(TP) | WDM_Components:TestPoint_PAD.03X.05 | TP4 |
| 1 | 0.15 uF | WDM_Components:C_0.15uF_0805 | C13 |
| 1 | 100 uF | WDM_Components:C_100uF_MLCC_C1210 | C5 |
| 1 | 10K_TC42_Trimpot | WDM_Components:TRIMPOT_BOURNS_TC42_2mm_SMD | VR1 |
| 1 | 15K | WDM_Components:Thermo_15K_0805-NO | R18 |
| 1 | 270K | WDM_Components:RES_270K_0805 | R10 |
| 1 | 340K | WDM_Components:RES_340K_0805 | R2 |
| 1 | 6.8uH, VLS5045EX-6R8M-H | WDM_Components:VLS5045EX330M | L1 |
| 1 | 600 OHM, MPZ2012S601AT000 | WDM_Components:IND_2012_TDK-L | L2 |
| 1 | AP7313-18SAG-7 | WDM_Components:AP7313-18SAG-7 | U5 |
| 1 | CONN HEADER SMD R/A 2POS 1.25MM | WDM_Components:53398-0271 | J14 |
| 1 | GND(TP) | WDM_Components:TestPoint_PAD.03X.05 | TP5 |
| 1 | JS202011JAQN Slide Switch DPDT Surface Mount, Right Angle | WDM_Components:JS202011JAQN | SW1 |
| 1 | MCP73871 | WDM_Components:MCP73871_QFN20_4MM | U2 |
| 1 | MMUN2133LT1G | WDM_Components:MMUN2133LT1G_SC59-BEC | T1 |
| 1 | ORANGE | WDM_Components:CHIPLED_0805_NOOUTLINE | D2 |
| 1 | PAM8302AASCR | WDM_Components:MSOP8_0.65MM | U7 |
| 1 | PEC11R-4215F-S0024 | WDM_Components:XDCR_PEC11R-4215F-S0024 | EN_1 |
| 1 | POM-5046P-C3310-R | WDM_Components:1X02_TH_ | MIC1 |
| 1 | S25FL512SAGMFIR13_512MBIT | FullBoard_TeensySynth_PrajwalM_Alt2:SO3016_SPA-M | U4 |
| 1 | SGTL5000XNBA3R2 | WDM_Components:QFN50P500X500X90-33N | U6 |
| 1 | SIG(TP) | WDM_Components:TestPoint_PAD.03X.05 | TP6 |
| 1 | SJ-3541AS-SMT-TR-67 | WDM_Components:CUI_SJ-3541AS-SMT-TR-67 | J15 |
| 1 | T4.1 | T41_Colby:Teensy4.1_Colby(Footprint) | J2 |
| 1 | TPS61090RSAR | WDM_Components:TPS61090RSAR_PVQFN-16 | U1 |
| 1 | VPCC(TP) | WDM_Components:TestPoint_PAD.03X.05 | TP2 |
| 1 | W25Q128JVSIQ | WDM_Components:W25Q128JVSIQ | U3 |
| 1 | ~ | WDM_Components:AdafruitStemmaSpeaker_3923 | SPKR1 |
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Questions
How big is the WDM(RevB V1) PCB?
It measures 61 × 68.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the WDM(RevB V1) use?
114 parts, built around the MCP73871EV, PAM8302AASCR, SGTL5000XNBA3R2 and W25Q128JVSIQ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the WDM(RevB V1) KiCad files?
From the ColbyDAllen/Wearable-Drum-Machine repository on GitHub, at the commit this page was made from: the board is Version 1/Hardware/E-CAD/WDM(RevB_V1).kicad_pcb and its schematic Version 1/Hardware/E-CAD/WDM(RevB_V1).kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WDM(RevB V1) design in my own project?
Its repository states no licence, so its author keeps all rights: ask ColbyDAllen before reusing the design.