4 layers55 × 65 mm
Esp32-c3-headset
dasisdormax/esp32-c3-headset
WIP: An ESP32-C3 based bluetooth headset PCB with headphone jack
30 parts1
4 layers
Power module
FETfox/Li-Ion_Power_ModuleA PCB that can protect,charge, and regulate a Li Ion battery to power MCU powered projects.
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 144
- Nets
- 84
- Pads
- 381
- Tracks, vias
- 665, 54
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Jun 2026
- Updated
- 6 Oct 2026
Overview
Power module is an open-source printed circuit board by FETfox, from the FETfox/Li-Ion_Power_Module repository on GitHub, published under the CC0-1.0 licence. It is a 4-layer board with 144 parts on 84 nets, routed with 665 tracks and 54 vias.
It is built around the ATTINY3217-MF, BQ24074RGTR and BQ27427YZF, with the BQ29728DSE, MD53R33 and B5819W among its other parts. Its parts include 51 resistors, 25 capacitors, 6 ICs, 4 diodes and 3 connectors. It belongs with the power boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATTINY3217-MF
WQFN-24-EP(4x4)-40℃~+125℃ 16MHz 2.7V~5.5V 22 256Byte 2KB 32KB 8 Bit AVR Built-in FLASH WQFN-24-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
BQ24074RGTR
QFN-16-EP(3x3)-40℃~+125℃ 1 1.5A 4.2V 4.35V~10.2V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
BQ27427YZF
DSBGA-9-40℃~+85℃ 1 2.45V~4.5V 50uA I2C Lithium Battery Monitoring IC Not supported Support Under-voltage lockout DSBGA-9 Battery Management ROHSTexas InstrumentsBattery Management
BQ29728DSE
WSON-6(1.5x1.5)-40℃~+85℃ 1 WSON-6(1.5x1.5) Battery Management ROHSTexas InstrumentsBattery Management
MD53R33
SOT-23-5-40℃~+85℃@(Ta) 1 100nA 10V 200mV@(200mA) 3.3V 500mA 65dB Fixed Positive Short Circuit Protection SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSShanghai Mingda MicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B5819W
SOD-123-55℃~+125℃ 1.5A 1mA@40V 25A 40V 600mV@1A Standalone SOD-123 Schottky Diodes ROHSMDDSchottky Diodes
DMN2014LHAB-7
U-DFN2030-6B-EP-55℃~+150℃ 1.1V 1.7W 16nC@4.5V 2 N-Channel 20V 28mΩ@1.8V 9A N-Channel U-DFN2030-6B-EP MOSFETs ROHSDiodes IncorporatedMOSFETs
DMP2008UFG-7-VB
DFN-8-EP(3x3)DFN-8-EP(3x3) MOSFETs ROHSVBsemi ElecMOSFETs
NUP2105L
SOT-23-55℃~+150℃ 100nA 2 24V 30pF 32V 350W@8/20us 44V 8A@8/20us Bidirectional IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 TVS SOT-23 ESD and Surge Protection (TVS/ESD) ROHSonsemiESD And Surge Protection (TVS/ESD)
README
README.mdStatus
RevA In development (schematic complete, layout pending)
Key Components
| Function | IC | Notes |
|---|---|---|
| Charger | BQ24074 | USB100/500 + ILIM modes |
| Protection | BQ29728 | OCP/OVP/UVP |
| Fuel Gauge | BQ27427 | Coulomb counter |
| Buck-Boost | TPS63020 | ~1.8-5.5V input, 3.3V/5V output |
| MCU (Smart) | ATtiny3217 | CAN interface logic |
| CAN Controller | MCP2515 | SPI interface |
| CAN Transceiver | SN65HVD230 | ISO11898-2 compliant |
Usage
Battery powered 5w power supply for projects that use 3v3 or 5v. The smart version tracks system status and communicates over CAN bus.
Known Issues / TODOs
- PCB layout and thermal analysis
- Publish assembly guide and test procedure
License
CC0
Parts
144| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 0R | Resistor_SMD:R_0805_2012Metric | R3, R7, R13, R14, R17, R18, R25, R30, R33, R41, R42, R43, R47 |
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R9, R11, R19, R29, R32, R38, R39, R40, R46 |
| 5 | 22uF | Capacitor_SMD:C_0805_2012Metric | C8, C9, C10, C11, C14 |
| 5 | 5.1k | Resistor_SMD:R_0603_1608Metric | R35, R36, R37, R50, R51 |
| 4 | 0R | Resistor_SMD:R_1206_3216Metric | R5, R20, R21, R24 |
| 4 | 100R | Resistor_SMD:R_0603_1608Metric | R28, R34, R44, R45 |
| 4 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4, C20 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R6, R26, R27 |
| 3 | 100nF | Capacitor_SMD:C_0603_1608Metric | C15, C16, C22 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C7 |
| 2 | 1.5k | Resistor_SMD:R_0603_1608Metric | R15, R16 |
| 2 | 100pF | Capacitor_SMD:C_0603_1608Metric | C23, C24 |
| 2 | 10pF | Capacitor_SMD:C_0603_1608Metric | C18, C19 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C12, C13 |
| 2 | 60.4R | Resistor_SMD:R_0603_1608Metric | R48, R49 |
| 2 | JST_PH | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J2, J4 |
| 1 | +3v3 | TestPoint:TestPoint_Pad_D1.0mm | TP28 |
| 1 | +Cell | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | +Pack | TestPoint:TestPoint_Pad_D1.0mm | TP12 |
| 1 | -Cell | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 1.1k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1.2M | Resistor_SMD:R_0603_1608Metric | R22 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C17 |
| 1 | 137k | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1R | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 1uH | Inductors:DR73 | L1 |
| 1 | 2.2k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 330R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 4.7nF | Capacitor_SMD:C_0603_1608Metric | C25 |
| 1 | 4.7pF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 5V | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | 910R | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | ADC_CC1 | TestPoint:TestPoint_Pad_D1.0mm | TP45 |
| 1 | ADC_CC2 | TestPoint:TestPoint_Pad_D1.0mm | TP44 |
| 1 | ADC_ISET | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | ATtiny3217 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U6 |
| 1 | B5819W | Diode_SMD:D_SOD-123 | D1 |
| 1 | BAT | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | BIN | TestPoint:TestPoint_Pad_D1.0mm | TP16 |
| 1 | BQ24074RGT | footprints:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm_ThermalVias | U2 |
| 1 | BQ27427 | footprints:BQ27427 | U3 |
| 1 | BQ29728 | footprints:WSON-6_1.5x1.5mm_P0.5mm | U1 |
| 1 | CANH | TestPoint:TestPoint_Pad_D1.0mm | TP42 |
| 1 | CANL | TestPoint:TestPoint_Pad_D1.0mm | TP43 |
| 1 | CAN_CS | TestPoint:TestPoint_Pad_D1.0mm | TP35 |
| 1 | CAN_INT | TestPoint:TestPoint_Pad_D1.0mm | TP38 |
| 1 | CAN_RESET | TestPoint:TestPoint_Pad_D1.0mm | TP37 |
| 1 | CE | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | CHG | LED_SMD:LED_0603_1608Metric | LED1 |
| 1 | CHG | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | CHG_OUT | TestPoint:TestPoint_Pad_D1.0mm | TP13 |
| 1 | CHG_PGOOD | LED_SMD:LED_0603_1608Metric | LED2 |
| 1 | CHG_PGOOD | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | Conn_02x03_Pogo | Connector_PinSocket_2.54mm:PinSocket_2x03_P2.54mm_Vertical | J3 |
| 1 | DMN2014LHAB-7 | footprints:U-DFN2030-6 | Q1 |
| 1 | DMP2008UFG-7 | Package_SON:Diodes_PowerDI3333-8 | Q2 |
| 1 | EN1 | TestPoint:TestPoint_Pad_D1.0mm | TP23 |
| 1 | EN2 | TestPoint:TestPoint_Pad_D1.0mm | TP21 |
| 1 | FG_GPOUT | TestPoint:TestPoint_Pad_D1.0mm | TP18 |
| 1 | FG_VDD | TestPoint:TestPoint_Pad_D1.0mm | TP22 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | I2C_SCL | TestPoint:TestPoint_Pad_D1.0mm | TP19 |
| 1 | I2C_SDA | TestPoint:TestPoint_Pad_D1.0mm | TP20 |
| 1 | ILIM | TestPoint:TestPoint_Pad_D1.0mm | TP15 |
| 1 | ITERM | TestPoint:TestPoint_Pad_D1.0mm | TP17 |
| 1 | LDO_VIN | TestPoint:TestPoint_Pad_D1.0mm | TP27 |
| 1 | LDO_VOUT | TestPoint:TestPoint_Pad_D1.0mm | TP30 |
| 1 | MCP2515-xST | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U7 |
| 1 | MCU_VCC | TestPoint:TestPoint_Pad_D1.0mm | TP32 |
| 1 | MD53R33 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | Mollicell_P28A | footprints:BatteryHolder_HAN_BH-18650-1 | BT1 |
| 1 | NTC | TestPoint:TestPoint_Pad_D1.0mm | TP31 |
| 1 | NUP2105L | Package_TO_SOT_SMD:SOT-23 | TVS1 |
| 1 | NetTie_2 | NetTie:NetTie-2_SMD_Pad2.0mm | NT1 |
| 1 | PGOOD | LED_SMD:LED_0603_1608Metric | LED3 |
The 128 most common of 144 parts.
Questions
What parts does the Power module use?
144 parts, built around the ATTINY3217-MF, BQ24074RGTR, BQ27427YZF and BQ29728DSE. 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 Power module KiCad files?
From the FETfox/Li-Ion_Power_Module repository on GitHub, at the commit this page was made from: the board is power_module.kicad_pcb and its schematic CAN.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Power module design in my own project?
Its repository publishes it under the CC0-1.0 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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