4 layers481.3 × 23.7 mm
Faraday rescue bms
nhallsny/faraday-rescue
Open source battery for e-bikes made by the now-defunct Faraday Bicycles
155 parts8CERN-OHL-P-2.0
4 layers174 × 29 mm
OneWheelBMS
ocornu/OneWheelBMS3Open source BMS for OneWheel v1/plus
- Size
- 174 × 29 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 98
- Nets
- 101
- Pads
- 520
- Tracks, vias
- 556, 79
- Pours
- 21
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 Oct 2020
- Updated
- 20 Oct 2020
Overview
OneWheelBMS is an open-source printed circuit board by ocornu, from the ocornu/OneWheelBMS repository on GitHub, published under the MIT licence. It is a 4-layer board of 174 × 29 mm with 98 parts on 101 nets, routed with 556 tracks and 79 vias.
It is built around the ATTINY1616-SN, MAX481EPA+ and FCX495TA, with the SI2325DS-T1-E3-VB among its other parts. Its parts include 40 resistors, 34 capacitors, 11 connectors, 4 diodes and 4 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATTINY1616-SN
SOIC-20-300mil-40℃~+105℃ 1.8V~5.5V 16KB 18 20MHz 256Byte 2KB 8 Bit AVR Built-in FLASH SOIC-20-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MAX481EPA+
PDIP-8-40℃~+85℃ 1 1 2.5Mbps 4.75V~5.25V Transceiver ±15kV PDIP-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICs
FCX495TA
SOT-89-65℃~+150℃ 1 NPN 100 100MHz 100nA 150V 1A 1W 300mV 7V NPN SOT-89 Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)
SI2325DS-T1-E3-VB
SOT-23MOSFETsVBsemi Elec
README
README.mdOneWheelBMS
Open source BMS for OneWheel v1/plus
Parts
98| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 220n X7R >=50V | Capacitor_SMD:C_0603_1608Metric | C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +1 |
| 17 | 22r 1% >=500mW | Resistor_SMD:R_0612_1632Metric | R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30 +1 |
| 4 | 5.1k 0.25W | Resistor_SMD:R_0805_2012Metric | R3, R4, R6, R7 |
| 4 | 7461093 | OneWheelBMS:7461093 | J1, J2, J3, J4 |
| 3 | 10M | Resistor_SMD:R_0805_2012Metric | R33, R36, R38 |
| 3 | 4.7k | Resistor_SMD:R_0603_1608Metric | R12, R13, R14 |
| 3 | 5.1k | Resistor_SMD:R_0805_2012Metric | R34, R35, R37 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C5, C29 |
| 2 | 100V | Diode_SMD:D_SOD-123 | D1, D2 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C33, C34 |
| 2 | 100r | Resistor_SMD:R_0805_2012Metric | R2, R8 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R11, R40 |
| 2 | 16V | Diode_SMD:D_SOD-123 | D3, D4 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C9, C10 |
| 2 | 1u X7R 100V | Capacitor_SMD:C_0805_2012Metric | C1, C8 |
| 2 | 220r 1W | Resistor_SMD:R_0612_1632Metric | R9, R10 |
| 2 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6, J7 |
| 2 | FDBL86210_F085 | Package_TO_SOT_SMD:Infineon_PG-HSOF-8-1_ThermalVias | Q3, Q4 |
| 2 | TBD | Capacitor_SMD:C_0603_1608Metric | C30, C31 |
| 1 | 0.01u | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 0.47u X7R 100V | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 100p | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 100p C0G 100V | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 100r 0.1W | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 120r | Resistor_SMD:R_0603_1608Metric | R39 |
| 1 | 2.2u | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 22n | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 22u | Capacitor_SMD:C_1206_3216Metric | C32 |
| 1 | 32.768 | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 5.1k | Resistor_SMD:R_1210_3225Metric | R32 |
| 1 | ATtiny1616-S | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U3 |
| 1 | BQ76952 | Package_QFP:TQFP-48_7x7mm_P0.5mm | U1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J11 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | Conn_01x06 | OneWheelBMS:5600200620 | J8 |
| 1 | Conn_01x13 | Connector_JST:JST_XH_B13B-XH-A_1x13_P2.50mm_Vertical | J9 |
| 1 | Conn_01x14 | Connector_JST:JST_XH_B14B-XH-A_1x14_P2.50mm_Vertical | J10 |
| 1 | FCX495TA | Package_TO_SOT_SMD:SOT-89-3 | Q1 |
| 1 | Ferrite_Bead_Small | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | MAX481E | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | OARSXP | OneWheelBMS:OARSXP | R5 |
| 1 | SI2325DS-T1-E3 | Package_TO_SOT_SMD:SOT-323_SC-70 | Q2 |
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Questions
How big is the OneWheelBMS PCB?
It measures 174 × 29 mm and has 4 copper layers, 1.6 mm thick.
What parts does the OneWheelBMS use?
98 parts, built around the ATTINY1616-SN, MAX481EPA+, FCX495TA and SI2325DS-T1-E3-VB. 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 OneWheelBMS KiCad files?
From the ocornu/OneWheelBMS repository on GitHub, at the commit this page was made from: the board is hardware/v0.1/OneWheelBMS/OneWheelBMS.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the OneWheelBMS design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).