4 layers140 × 100 mm
Recline actuator controller
Accessibilita/recline-controls
Hardware project for open source wheel chair recline control electronics
181 partsCERN-OHL-S-2.0
4 layers61 × 22.9 mm
Finch Feather
adamjvr/DarkLeafAdafruit Feather style board for the STM32WB5MMGH6TR 2G RF Module
- Size
- 61 × 22.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 87
- Pads
- 214
- Tracks, vias
- 409, 129
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 10 Feb 2021
- Updated
- 11 Mar 2025
Overview
Finch Feather is an open-source printed circuit board by adamjvr, from the adamjvr/DarkLeaf repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 61 × 22.9 mm with 33 parts on 87 nets, routed with 409 tracks and 129 vias.
It is built around the MCP73831T-2ACI/OT-HXY, TLV75533PDBVR-MS and USBLC6-2P6, with the C0402C104K9PACTU, RC0402FR-0710KL and RC0603FR-07100KL among its other parts. Its parts include 10 capacitors, 9 resistors, 3 ICs, 2 diodes and 1 transistor. It belongs with the microcontroller boards and radio and wireless boards and the STM32 boards of this library.
Main components
12
MCP73831T-2ACI/OT-HXY
SOT-23-5LBattery ManagementHXY MOSFETTLV75533PDBVR-MS
SOT-23-5SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIUncategorised
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
C0402C104K9PACTU
0402100nF 6.3V X5R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSKEMETMultilayer Ceramic Capacitors MLCC - SMD/SMT
RC0402FR-0710KL
UncategorisedUnknown maker
RC0603FR-07100KL
UncategorisedUnknown maker
20021121-00010C4LF
SMD,P=1.27mm1.27mm 1.27mm 10P 2 2x5P 3.05mm Black Copper alloy Gold Pin Header Surface Mount,Vertical SMD,P=1.27mm Pin Headers ROHSAmphenolPin Headers
B3U-1000P
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile Switches
DMP3125L-7
SOT-23-55℃~+150℃ 1 P-Channel 2.5A 254pF 3.1nC@4.5V 30V 650mW 7pF 95mΩ@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
DX07S016JA1R1500
SMD-40℃~+85℃ 1 250mA、1.25A 48V Black Female Type-C USB 2.0 SMD USB Connectors ROHSJAE ElectronicsUSB Connectors
LTST-C194TBKT
0603-20℃~+80℃ 104mcd 130° 20mA 3.3V 460nm~475nm 468nm 76mW Blue Discrete Diode Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
MBR0540T1G
SOD-123SOD-123 Schottky Diodes ROHSGOODWORKSchottky Diodes
README
README.mdDarkLeaf
Adafruit Feather style board for the STM32WB5MMGH6TR 2G RF Module
Quick Specs:
- STM32WB5MMGH6TR 2G RF Module
- Adafruit Feather pinout and formfactor
- ARM Cortex M Debug Port
- USB C Connector For DFU Flashing (USB 2.0 interface)
- LiPO powered w/ onboard 3.3V LDO Regulator
- Can be powered directly by 3.3V when breadboarded
KiCAD 2D PCB Render
3D KiCAD PCB Renders
Prototype made by OSHPark.com
Released Under CERN Open Hardware License Version 2
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | C0402C104K9PACTU | AVR-KiCAD-Lib-Resistors:R0402 | C1, C4, C5, C6, C7, C8, C9, C10 |
| 5 | RC0402FR-0710KL | AVR-KiCAD-Lib-Resistors:R0402 | R1, R2, R3, R4, R5 |
| 2 | C0603C475K9PACTU | AVR-KiCAD-Lib-Capacitors:C0603 | C2, C3 |
| 2 | RC0603FR-07100KL | AVR-KiCAD-Lib-Resistors:R0603 | R8, R9 |
| 1 | 20021121-00010C4LF | AVR-KiCAD-Lib-Connectors:20021121-00010C4LF | T1 |
| 1 | B3U-1000P | AVR-KiCAD-Lib-Mech-Switches:B3U-1000P | SW1 |
| 1 | DMP3125L-7 | growbox-KiCAD-Transistors:SOT-23 | Q1 |
| 1 | DX07S016JA1R1500 | AVR-KiCAD-Lib-Connectors:JAE_DX07S016JA1R1500 | T3 |
| 1 | LTST-C194TBKT | AVR-KiCAD-Lib-Diodes:LED0603 | D1 |
| 1 | MBR0540T1G | AVR-KiCAD-Lib-Diodes:D_SOD-123 | D3 |
| 1 | MCP73831T-2ACI_OT | AVR-KiCAD-Lib-ICs:SOT-23-5 | U3 |
| 1 | MI0603K300R-10 | AVR-KiCAD-Lib-Inductors:MI0603K300R-10 | L1 |
| 1 | RC0402FR-072KL | AVR-KiCAD-Lib-Resistors:R0402 | R7 |
| 1 | RC0603FR-07470RL | AVR-KiCAD-Lib-Resistors:R0603 | R6 |
| 1 | S2B-PH-SM4-TB(LF)(SN) | AVR-KiCAD-Lib-Connectors:B2B-PH-SM4-TB(LF)(SN) | T5 |
| 1 | STM32WB5MMGH6TR | AVR-KiCAD-Lib-Modules:STM32WB5MMGH6TR | M1 |
| 1 | TLV75533PDBVR | AVR-KiCAD-Lib-ICs:TLV75533PDBVR | U2 |
| 1 | TSW-112-07-G-S | AVR-KiCAD-Lib-Connectors:SAMTEC-TSW-112-07-X-S | T2 |
| 1 | TSW-116-07-L-S | AVR-KiCAD-Lib-Connectors:SAMTEC-TSW-116-07-X-S | T4 |
| 1 | USBLC6-2P6 | AVR-KiCAD-Lib-ICs:SOT50P160X60-6N | U1 |
Questions
How big is the Finch Feather PCB?
It measures 61 × 22.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Finch Feather use?
33 parts, built around the MCP73831T-2ACI/OT-HXY, TLV75533PDBVR-MS, USBLC6-2P6 and C0402C104K9PACTU. 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 Finch Feather KiCad files?
From the adamjvr/DarkLeaf repository on GitHub, at the commit this page was made from: the board is PCB/Finch-Feather/Finch-Feather.kicad_pcb and its schematic PCB/Finch-Feather/Finch-Feather.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Finch Feather design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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