Faraday rescue bms
About the Faraday rescue bms PCB
Faraday rescue bms is an open source STM32 PCB design by nhallsny, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 481.3 × 23.7 mm, with 147 components from 60 distinct parts.
Its main chip is the STM32L010K8T6TR, from the STM32 family. Other key parts include the BQ7697202PFBR and THVD2410DR. By type, the board carries 54 resistors, 41 capacitors, 20 diodes, 7 battery holders, 3 ICs and 2 transistors.
It belongs with the power & battery designs in this gallery.
From the project
Open source battery for e-bikes made by the now-defunct Faraday Bicycles
PCB attached to battery modules that measures voltages, protects battery, manages sleep/wake, communicates with Faraday bike over RS485
Considered but not implemented: - Add bluetooth module for STM32 - Switch Linear regulator to switching regulator ### 1.0 Initial Release
For the smaller stub PCB: - 1mm board thickness - 1oz copper - Higher Tg material to avoid degradation of insulation during operation
Main components on the Faraday rescue bms
Faraday rescue bms bill of materials (BOM)
147 components, 60 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ7697202PFBR BQ7697202 | TQFP48_PFB_TEX | U1 |
| 1 | STM32L010K8T6TR STM32L010K8Tx | LQFP-32_7x7mm_P0.8mm | U2 |
| 1 | THVD2410DR | SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | FCX495TA | SOT-89-3 | Q1 |
| 1 | 2N7002 | SOT-23 | Q3 |
| 1 | ABS07-32.768KHZ-T | R_1206_3216Metric | Y1 |
| 1 | 532610571 | CONN_532610001-SD_05_MOL | J1 |
| 1 | 532610471 | CONN_532610001-SD_04_MOL | J3 |
| 8 | 36-5019CT-ND ~ | TestPoint_Keystone_5019_Minature | 3v3IN1, 3v3OUT1, ALRT1, BATT3, BUT1, SCL1, SDA1, VSS1 |
| 7 | battery_pod | 3S 18650 Group | BT1, BT2, BT3, BT4, BT5, BT6, BT7 |
| 1 | SF-1206HHA3000R-2 | R_2010_5025Metric | F1 |
| 1 | 0ZCJ0005FF2E BEL Fuse 0ZCJ0005FF2E | Fuse_1206_3216Metric | F2 |
| 2 | DMTH6002LPS-13 | POWERDI5060-8_K_DIO | MOSFET1, MOSFET2 |
| 2 | NT04104F3435B1F Thermistor_US | R_0402_1005Metric | TH1, TH2 |
| 1 | CMFX 103F3435 Thermistor_US | R_0402_1005Metric | TH4 |
| 2 | BAT54SW | SOT-323_SC-70 | D1, D16 |
| 3 | PMEG10010ELR-QX PMEG10010ELR | Nexperia_CFP3_SOD-123W | D2, D9, D18 |
| 4 | ESD9B3.3ST5G | D_SOD-923 | D4, D12, D13, D20 |
| 3 | BZX585-C16,115 | D_SOD-523 | D5, D6, D7 |
| 1 | 1N4448W | D_SOD-123 | D8 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | VLMO1500-GS08 LED | LED_0402_1005Metric | D10, D11, D15, D17 |
| 2 | ESD5Z12T1G | D_SOD-523 | D19, D22 |
| 1 | SMAJ54CA | D_SMA | D21 |
| 1 | BLM18PG471SN1D | L_0603_1608Metric | FB1 |
| 1 | WCM3216F2SF-261T03 APCW3216-221P2T | L_CommonMode_Wurth_WE-CNSW-1206 | L2 |
| 1 | CC0402KRX7R7BB104 100nF | C_0402_1005Metric | C1 |
| 13 | GRM155R61H224KE01W 220nF 50V | C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C8, C9 +5 |
| 2 | CL10B104KC8NNNC 100nF 100V | C_0603_1608Metric | C13, C24 |
| 1 | CL21Y105KCYVPNE 1u 100V | C_0805_2012Metric | C17 |
| 1 | CL21C101JC61PNC 100pF 100V | C_0805_2012Metric | C18 |
| 1 | CC0805KKX7R0BB474 0.47uF 50V | C_0805_2012Metric | C19 |
| 3 | CC0402KRX7R7BB104 100pF | C_0402_1005Metric | C20, C21, C28 |
| 3 | CL05A106MP5NUNC 10u 6.3V | C_0402_1005Metric | C22, C30, C37 |
| 1 | CC0402KRX5R7BB225 2.2uF | C_0402_1005Metric | C23 |
| 1 | CGA4J2X7R2A473K125AA 47nF 100V | C_0805_2012Metric | C25 |
| 5 | CC0402KRX7R7BB104 100nF 6.3V | C_0402_1005Metric | C26, C29, C31, C32, C34 |
| 1 | GRT155R61C105KE01D 1uF 6.3V | C_0402_1005Metric | C27 |
| 1 | CC0402KRX7R7BB104 10u 6.3V | C_0402_1005Metric | C33 |
| 2 | GJM1555C1H150GB01D 15pF | C_0402_1005Metric | C35, C36 |
| 1 | GRM155R71H223KA12D 22nF | C_0402_1005Metric | C38 |
| 1 | GRM155R71H223KA12D 22nF 50V | C_0402_1005Metric | C39 |
| 1 | CL21Y105KCYVPNE 1uF 100V | C_0805_2012Metric | C40 |
| 2 | GRT155R61C105KE01D 1uF 25V | C_0402_1005Metric | C41, C42 |
| 1 | RC0402JR-07120RL 0 | R_0402_1005Metric | R1 |
| 13 | ESR18EZPF20R0 20 | R_1206_3216Metric | R2, R3, R4, R5, R6, R7, R8, R9 +5 |
| 6 | RC0402JR-07120RL 120R | R_0402_1005Metric | R15, R16, R22, R41, R43, R44 |
| 8 | RC0402JR-0710KL 10k | R_0402_1005Metric | R17, R18, R23, R30, R35, R48, R50, R55 |
| 1 | RC0402JR-07120RL 120R | R_1206_3216Metric | R19 |
| 2 | RC0402JR-0710KL 1.5k | R_0402_1005Metric | R20, R21 |
| 3 | RC0402FR-07220KL 220K | R_0402_1005Metric | R24, R26, R29 |
| 7 | RC0402FR-075K1L 5.1K | R_0402_1005Metric | R25, R27, R28, R51, R52, R53, R54 |
| 1 | RC0402FR-077K5L 7.5k | R_0402_1005Metric | R31 |
| 1 | RC0402JR-0710KL 1k | R_0402_1005Metric | R32 |
| 4 | RC0402FR-07330RL 1.5k | R_0402_1005Metric | R33, R34, R37, R38 |
| 1 | RC0402FR-07330RL 330R | R_1206_3216Metric | R39 |
| 1 | PE2512FKE7W0R01L 0.010 | R_2512_6332Metric | R40 |
| 1 | RC0402JR-07120RL 1.5k | R_0402_1005Metric | R42 |
| 2 | RC1005J000CS 330R | R_0402_1005Metric | R45, R46 |
| 1 | RC0402JR-0710KL 1 | R_0402_1005Metric | R47 |
| 1 | RC0402FR-071RL 1 | R_0402_1005Metric | R49 |
Faraday rescue bms design files
The KiCad project lives in the nhallsny/faraday-rescue repository on GitHub; these links point at the commit this page was built from.
Faraday rescue bms: common questions
What microcontroller does the Faraday rescue bms use?
The Faraday rescue bms is built around the STM32L010K8T6TR, from the STM32 family.
How big is the Faraday rescue bms PCB?
The Faraday rescue bms measures 481.3 × 23.7 mm, has 4 copper layers and is 1 mm thick.
How many components are on the Faraday rescue bms?
147 components, from 60 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Faraday rescue bms design files?
From the nhallsny/faraday-rescue repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Faraday rescue bms design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which nhallsny chose for the repository.
Can I test firmware for the Faraday rescue bms without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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