2 layers69 × 13 mm
Adaptor
williamhaarhoff/foc8313
Highly compact field oriented controller based on the DRV8313 IC
22 parts9
4 layers35 × 35 mm
Foc8313
williamhaarhoff/foc83139Highly compact field oriented controller based on the DRV8313 IC
- Size
- 35 × 35 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 155
- Nets
- 88
- Pads
- 388
- Tracks, vias
- 1,093, 223
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Aug 2023
- Updated
- 6 Nov 2025
Overview
Foc8313 is an open-source printed circuit board by williamhaarhoff, from the williamhaarhoff/foc8313 repository on GitHub. It is a 4-layer board of 35 × 35 mm with 155 parts on 88 nets, routed with 1,093 tracks and 223 vias.
It is built around the INA240A2D, AS5047D and DRV8313PWP. Its parts include 33 capacitors, 24 resistors, 4 ICs, 4 connectors and 3 diodes. It belongs with the robots and motor control boards and the STM32 boards of this library.
Main components
3
INA240A2D
SOIC-8-40℃~+125℃ -4V~80V 1 1.8mA 132dB 2.7V~5.5V 250nV/℃ 2V/us 400kHz 40nV/√Hz@1kHz 50V/V 5uV 90uA Bidirectional detection、Zero drift / auto-zero、Programmable output reference level、Analog output interface ±80V SOIC-8 Current Sense Amplifiers ROHSTexas InstrumentsCurrent Sense Amplifiers
AS5047D
14-Bit On-Axis Magnetic Rotary Position Sensor with 11-Bit Decimal and Binary Incremental Pulse CountOSRAMUncategorised
DRV8313PWP
HTSSOP-28-EP-4.5mmHTSSOP-28-EP-4.5mm Brushless DC (BLDC) Motor Driver ROHSTexas InstrumentsMotor Driver ICs
README
README.mdfoc8313
This board was inspired by Foc-Ctrl-Lite. FOC8313 is a highly compact, feature rich, daisy-chainable, field oriented control board based around the DRV8313 3 phase half bridge driver. This board is highly configurable and upgradeable, and includes all the manufacturing files required start producing controllers for $\approx$ $20/board
| Front | Back |
|---|---|
 |  |
Features:
- Highly compact 35x35mm outline
- 29x29 square M3 hole pattern
- 12V to 35V operating range
- 3.5A max per phase current
- Onboard STM32F103CBTx microcontroller
- Based on the DRV8313 3 phase half bridge driver
- 2 x INA240A2D high side current sense amplifiers
- 1 x AS5047D back mounted hall effect encoder
- EEPROM to store configurations / calibrations etc.
- Daisy chainable power and CAN
- Programmable with USB-DFU or StLink - 6 pin tag connect
- Auxilliary encoder/Timer port with 5V and GND
- Auxilliary SPI/GPIO and I2C/UART port with 5V and GND
- Easily upgradable for isolated CAN (3 wire)
- Extremely compact isolated CAN
- JLC manufacturing files included
- Cost optimised for PCBA with JLCPCB (as few extended components as possible)
- Most basic variant costs $\approx$ $20 per board (for 10 PCBs at JLCPCB)
- Predominantly single sided design allows for cost effective single sided PCBA, easy hot plating for rework, easy configuration with jumpers
| Top | In1 |
|---|---|
 |  |
| In2 | Bottom |
 |  |
PCBA - Cost Scaling:
| Version | Colour | Finish | Assembly | Quantity | Unit price | Extended Price |
|---|---|---|---|---|---|---|
| v1.0 | Black | Enig | Standard T&B | 15 | $30.8 | $462.57 |
| v1.0 | Black | Enig | Standard Top | 15 | $24.3 | $364.22 |
| v1.0 | Black | HASL | Standard Top | 10 | $24.75 | $247.51 |
| v1.0 | Black | Enig | Standard T&B | 100 | $16.78 | $1678.39 |
| v1.0 | Green | HASL | Economic Top | 2 | $53.45 | $106.89 |
| v1.0 | Green | HASL | Economic Top | 5 | $30.28 | $151.40 |
| v1.0 | Green | HASL | Economic Top | 10 | $20.48 | $204.81 |
| v1.0 | Green | HASL | Economic Top | 15 | $19.2 | $288.48 |
| v1.0 | Green | HASL | Economic Top | 30 | $15.6 | $468.48 |
| v1.0 | Green | HASL | Standard Top | 100 | $12.98 | $1297.77 |
| v1.0 | Black | Enig | No ICs Top | 10 | $15.9 + | $159.37 |
| v1.0 | Black | Enig | No ICs Top | 15 | $12.9 + | $193.44 |
ICs:
15x @LCSC: 215.22 -> 14.33 10x @LCSC: 146.71 -> 14.6
Parts
155| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C12, C20, C21, C22, C24, C26, C27, C28, C29, C33, C34, C35, C36 +3 |
| 8 | 5.1k | Resistor_SMD:R_0402_1005Metric | R14, R15, R19, R20, R21, R22, R24, R30 |
| 5 | * | local_lib:jumper12_open | JP2, JP4, JP5, JP6, JP7 |
| 4 | G*** | kibuzzard-6687B916 | kibuzzard-6687B916, kibuzzard-6687B916, kibuzzard-6687B916, kibuzzard-6687B916 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopOnly | H7, H8, H10, H11 |
| 4 | MountingHole_Pad | local_lib:2x4 | H1, H2, H3, H4 |
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R1, R3, R25 |
| 3 | 1k5 | Resistor_SMD:R_0402_1005Metric | R6, R8, R17 |
| 3 | MountingHole_Pad | local_lib:2x3 | H5, H6, H9 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R5, R26 |
| 2 | 10m | Resistor_SMD:R_0805_2012Metric | R12, R13 |
| 2 | 18p | Capacitor_SMD:C_0402_1005Metric | C16, C17 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C5, C15 |
| 2 | 20k | Resistor_SMD:R_0402_1005Metric | R4, R7 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric | R11, R16 |
| 2 | 22n | Capacitor_SMD:C_0402_1005Metric | C10, C11 |
| 2 | 22u | Capacitor_SMD:C_0603_1608Metric | C37, C38 |
| 2 | 36V | Diode_SMD:D_SOD-323 | D1, D3 |
| 2 | CAN | easyeda:CONN-SMD_AFC10-S03QCA-00 | J3, J4 |
| 2 | G*** | kibuzzard-6687B990 | kibuzzard-6687B990, kibuzzard-6687B990 |
| 2 | G*** | kibuzzard-6687C00C | kibuzzard-6687C00C, kibuzzard-6687C00C |
| 2 | G*** | kibuzzard-6687C3AC | kibuzzard-6687C3AC, kibuzzard-6687C3AC |
| 2 | G*** | kibuzzard-6687C371 | kibuzzard-6687C371, kibuzzard-6687C371 |
| 2 | G*** | kibuzzard-6687BD2B | kibuzzard-6687BD2B, kibuzzard-6687BD2B |
| 2 | G*** | kibuzzard-6687BD8E | kibuzzard-6687BD8E, kibuzzard-6687BD8E |
| 2 | G*** | kibuzzard-6687BCF3 | kibuzzard-6687BCF3, kibuzzard-6687BCF3 |
| 2 | INA240A2D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7, U8 |
| 2 | SW_SPST | easyeda:SW-TH_PANASONIC_EVPAKE31A | SW1, SW2 |
| 1 | * | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm | JP1 |
| 1 | * | local_lib:jumper12_closed | JP3 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C23 |
| 1 | 10u | Inductor_SMD:L_0805_2012Metric | L2 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | 2.2u | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 220n | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 22u | Capacitor_SMD:C_0805_2012Metric | C14 |
| 1 | 27n | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 4.7k | Resistor_SMD:R_0402_1005Metric | R18 |
| 1 | 47u | Capacitor_SMD:CP_Elec_5x5.7 | C30 |
| 1 | AS5047D | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U5 |
| 1 | DRV8313PWP | easyeda:HTSSOP-28_L9.8-W4.5-P0.65-LS6.6-BL-EP | U3 |
| 1 | Encoder | easyeda:CONN-SMD_5P-P1.00_MEGASTAR_ZX-SH1.0-5PWT | J2 |
| 1 | G*** | kibuzzard-6687B983 | kibuzzard-6687B983 |
| 1 | G*** | kibuzzard-6687BBBA | kibuzzard-6687BBBA |
| 1 | G*** | kibuzzard-6687BF56 | kibuzzard-6687BF56 |
| 1 | G*** | kibuzzard-6687BC5B | kibuzzard-6687BC5B |
| 1 | G*** | kibuzzard-6687BFE6 | kibuzzard-6687BFE6 |
| 1 | G*** | kibuzzard-6687B97C | kibuzzard-6687B97C |
| 1 | G*** | kibuzzard-6687BB13 | kibuzzard-6687BB13 |
| 1 | G*** | kibuzzard-690CC9D7 | kibuzzard-690CC9D7 |
| 1 | G*** | kibuzzard-6687BD97 | kibuzzard-6687BD97 |
| 1 | G*** | kibuzzard-6687C408 | kibuzzard-6687C408 |
| 1 | G*** | kibuzzard-6687B989 | kibuzzard-6687B989 |
| 1 | G*** | kibuzzard-6687BB22 | kibuzzard-6687BB22 |
| 1 | G*** | kibuzzard-6687BC6D | kibuzzard-6687BC6D |
| 1 | G*** | kibuzzard-6687BD9D | kibuzzard-6687BD9D |
| 1 | G*** | kibuzzard-6687C487 | kibuzzard-6687C487 |
| 1 | G*** | kibuzzard-6687C0E6 | kibuzzard-6687C0E6 |
| 1 | G*** | kibuzzard-6687BFB6 | kibuzzard-6687BFB6 |
| 1 | G*** | kibuzzard-6687BFD2 | kibuzzard-6687BFD2 |
| 1 | G*** | kibuzzard-6687B975 | kibuzzard-6687B975 |
| 1 | G*** | kibuzzard-6687BFAE | kibuzzard-6687BFAE |
| 1 | G*** | kibuzzard-6687C148 | kibuzzard-6687C148 |
| 1 | G*** | kibuzzard-6687C12A | kibuzzard-6687C12A |
| 1 | G*** | kibuzzard-6687B962 | kibuzzard-6687B962 |
| 1 | G*** | kibuzzard-6687C440 | kibuzzard-6687C440 |
| 1 | G*** | kibuzzard-6687BBC5 | kibuzzard-6687BBC5 |
| 1 | G*** | kibuzzard-6687BC64 | kibuzzard-6687BC64 |
| 1 | G*** | kibuzzard-6687BD70 | kibuzzard-6687BD70 |
| 1 | G*** | kibuzzard-6687BD69 | kibuzzard-6687BD69 |
| 1 | G*** | kibuzzard-6687BB56 | kibuzzard-6687BB56 |
| 1 | G*** | kibuzzard-6687BD76 | kibuzzard-6687BD76 |
| 1 | G*** | kibuzzard-6687BF5D | kibuzzard-6687BF5D |
| 1 | G*** | kibuzzard-6687BBB1 | kibuzzard-6687BBB1 |
| 1 | G*** | kibuzzard-690CC938 | kibuzzard-690CC938 |
| 1 | G*** | kibuzzard-6687B96D | kibuzzard-6687B96D |
| 1 | G*** | kibuzzard-6687BB64 | kibuzzard-6687BB64 |
| 1 | GPIO | easyeda:CONN-SMD_8P-P1.00_MEGASTAR_ZX-SH1.0-8PWT | J6 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric | D7 |
The 143 most common of 155 parts.
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Questions
How big is the Foc8313 PCB?
It measures 35 × 35 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Foc8313 use?
155 parts, built around the INA240A2D, AS5047D and DRV8313PWP. 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 Foc8313 KiCad files?
From the williamhaarhoff/foc8313 repository on GitHub, at the commit this page was made from: the board is hw/foc8313.kicad_pcb and its schematic adaptor/adaptor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Foc8313 design in my own project?
Its repository states no licence, so its author keeps all rights: ask williamhaarhoff before reusing the design.