4 layers70 × 70 mm
4 layers180 × 35 mm
Express
versioduo/express🎚️ MIDI Expression Controller
- Size
- 180 × 35 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 180
- Nets
- 219
- Pads
- 1,302
- Tracks, vias
- 786, 181
- Pours
- 113
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 19 Apr 2020
- Updated
- 18 Aug 2026
Overview
Express is an open-source printed circuit board by versioduo, from the versioduo/express repository on GitHub. It is a 4-layer board of 180 × 35 mm with 180 parts on 219 nets, routed with 786 tracks and 181 vias.
It is built around the THVD2442DRC, TPS78433QWDRBRQ1 and WS2812, with the CG0603MLC-3.3LE, PMEG2010EPK and SJ2-25404B-SMT-TR among its other parts. Its parts include 52 resistors, 35 diodes, 28 capacitors, 19 connectors and 4 ICs. It belongs with the SAM D and SAM boards of this library.
Main components
8
THVD2442DRC
VSON-10-EP(3x3)-40℃~+125℃ 1 1 20Mbps 256 3V~5.5V 7uA Full-Duplex Transceiver ±8kV VSON-10-EP(3x3) RS-485 / RS-422 ICs ROHSTexas InstrumentsRS-485 / RS-422 ICs
TPS78433QWDRBRQ1
SON-8(3x3)-40℃~+150℃@(Tj) 1 115mV@(300mA) 25uA 3.3V 300mA 30uVrms 50dB@(100kHz) 6V Fixed Over Current Protection、Over Temperature Protection、Soft Start、Enable Positive SON-8(3x3) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
WS2812
SMD5050-4P1.57mm 1000mcd 110mcd 120us 2kHz 3.7V~5.3V 300ns 320mcd 451nm 523nm 5mm 5mm 623nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit Top-mount SMD5050-4P RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
CG0603MLC-3.3LE
0603-55℃~+125℃ 0.2pF 1 3.3V 30V Bidirectional ESD IEC 61000-4-2 0603 ESD and Surge Protection (TVS/ESD) ROHSBournsVaristors
PMEG2010EPK
DFN1608-21 Independent 1A 20V 415mV@1A 5A 600uA@20V DFN1608-2 Schottky Diodes ROHSNexperiaSchottky Diodes
SJ2-25404B-SMT-TR
--25℃~+85℃ 12.8mm 12V 1A 2.5mm Headphone Jack 3mm 5.6mm Black Copper alloy Gold Surface Mount TRRS - Audio Connectors ROHSCUIAudio Connectors (Headphones)CG0603MLC-05LE
0603-40℃~+85℃ 0.5pF 1 25V 5V 5nA ESD IEC 61000-4-2 0603 ESD and Surge Protection (TVS/ESD) ROHSBournsVaristors
RCLAMP0582N
DFN-6(1.2x1)DFN-6(1.2x1) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICUncategorised
README
hardware/README.mdexpress
🎚️ MIDI Expression Controller
Schematic
Bill Of Materials
Copying
Anyone can use this public domain work without having to seek authorisation, no one can ever own it.
Parts
180| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | WS2812 | V2_LED:WS2812-2020 | D102, D103, D202, D302, D402, D502, D602, D702, D1002, D1102, D1202, D1302, D1402, D1502, D1602, D1702 +2 |
| 17 | 100k | V2_Resistor_SMD:R_0603 | R101, R202, R302, R402, R502, R602, R702, R802, R1002, R1102, R1202, R1302, R1402, R1502, R1602, R1702 +1 |
| 17 | CG0603MLC-3.3LE | V2_Diode_SMD:D_0603 | TVS101, TVS201, TVS301, TVS401, TVS501, TVS601, TVS701, TVS801, TVS1001, TVS1101, TVS1201, TVS1301, TVS1401, TVS1501, TVS1601, TVS1701 +1 |
| 16 | 0u022 | V2_Capacitor_SMD:C_0603 | C201, C301, C401, C501, C601, C701, C801, C901, C1001, C1101, C1201, C1301, C1401, C1501, C1601, C1701 |
| 16 | 1k | V2_Resistor_SMD:R_0603 | R203, R303, R403, R503, R603, R703, R803, R903, R1003, R1103, R1203, R1303, R1403, R1503, R1603, R1703 |
| 16 | 33R | V2_Resistor_SMD:R_0603 | R201, R301, R401, R501, R601, R701, R801, R901, R1001, R1101, R1201, R1301, R1401, R1501, R1601, R1701 |
| 16 | PMEG2010EPK | V2_Diode_SMD:D_SOD-1608 | D201, D301, D401, D501, D601, D701, D801, D901, D1001, D1101, D1201, D1301, D1401, D1501, D1601, D1701 |
| 16 | SJ2-25404B-SMT-TR | V2_Connector_Audio:CUI_SJ2-25404B-SMT-TR | J201, J301, J401, J501, J601, J701, J801, J901, J1001, J1101, J1201, J1301, J1401, J1501, J1601, J1701 |
| 7 | 0u1 | V2_Capacitor_SMD:C_0603 | C104, C105, C106, C107, C108, C1801, C1901 |
| 5 | 2mm | V2_Mechanical:MountingHole_2mm | H104, H105, H106, H107, H108 |
| 3 | 3mm | V2_Mechanical:MountingHole_3mm | H101, H102, H103 |
| 3 | Fiducial_Paste | V2_Fiducial:Fiducial_0.5mm_Mask1mm_Paste | FID101, FID102, FID103 |
| 2 | 100R | V2_Resistor_SMD:R_0603 | R1801, R1901 |
| 2 | 10u | V2_Capacitor_SMD:C_0805 | C109, C110 |
| 2 | 18p | V2_Capacitor_SMD:C_0603 | C101, C102 |
| 2 | 2x05_Horizontal | V2_Connector_Header_1.27mm:PinHeader_2x05_P1.27mm_Horizontal | J1801, J1901 |
| 2 | PCB_Plug_Horizontal | V2_PCB_Devices:PCB_Plug_Horizontal | PLUG101, PLUG102 |
| 2 | SKSG | V2_Button_Switch_SMD:SKSG | SW101, SW102 |
| 2 | THVD2442 | V2_Package_SON:VSON-10-4-1EP_3x3mm_P0.5mm_EP1.65x2.4mm_ThermalVias | U1801, U1901 |
| 1 | 10u | V2_Capacitor_SMD:C_0603 | C103 |
| 1 | 32k768 | V2_Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y101 |
| 1 | 330R | V2_Resistor_SMD:R_0603 | R102 |
| 1 | ATSAMD51J | V2_Package_DFN_QFN:QFN-64-1EP_9x9mm_P0.5mm_EP4.8x4.8mm_ThermalVias | U101 |
| 1 | Arrow_In | V2_Artwork:Arrow_In | ICON103 |
| 1 | Arrow_Out | V2_Artwork:Arrow_Out | ICON104 |
| 1 | Board_express | V2_Artwork:Board_express_Small | ICON102 |
| 1 | Button-bottom | V2_PCB_Devices:PCB_Button-bottom | SWB101 |
| 1 | CG0603MLC-05LE | V2_Diode_SMD:D_0603 | TVS102 |
| 1 | Cortex | V2_Connector_Debug:Cortex | J101 |
| 1 | Layer_Numbers | V2_Production:Layer_Numbers | INFO101 |
| 1 | Orange | V2_LED:LED_0603 | D101 |
| 1 | RCLAMP0582N | V2_ESD_Suppressor:SLP1210N6 | ESD101 |
| 1 | TPS78433QWDRBRQ1 | V2_Package_SON:VSON-8-1_3x3mm_P0.65_EP1.65x2.4mm | U102 |
| 1 | V2-logo | V2_Artwork:Logo_Small | ICON101 |
| 1 | ~ | V2_Production:Revision | INFO102 |
Questions
How big is the Express PCB?
It measures 180 × 35 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Express use?
180 parts, built around the THVD2442DRC, TPS78433QWDRBRQ1, WS2812 and CG0603MLC-3.3LE. 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 Express KiCad files?
From the versioduo/express repository on GitHub, at the commit this page was made from: the board is hardware/express.kicad_pcb and its schematic hardware/ExpressionInput.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Express design in my own project?
Its repository states no licence, so its author keeps all rights: ask versioduo before reusing the design.
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