HardLabs

Foc

svofski·tapeshnik·hardware/tapeshnik-mecha/foc/foc.kicad_pcb

Foc PCB layout, top view — open source RP2040/RP2350 board by svofski

About the Foc PCB

Foc is an open source RP2040/RP2350 PCB design by svofski, published on GitHub. It is a 2-layer board measuring 82 × 43.5 mm, with 39 components from 27 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the STSPIN233, INA181A1IDBVR and AS5047D. By type, the board carries 13 capacitors, 11 resistors, 9 ICs and 6 connectors.

It belongs with the robotics & motion designs in this gallery.

From the project

compact cassette data drive

This is a dual-BLDC controller aimed at spinning two BLDC motors of a tape transport.

Big thanks to SimpleFOC community for support, reviews and inspiration!

Controller: Waveshare RP2040-Zero Motor drivers: STSPIN233 Tape speed sensor: PMW3389

Main components on the Foc

STSPIN233INA181A1IDBVRAS5047DRP2040-Zero

Foc bill of materials (BOM)

39 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
STSPIN233
U1, U7
4
INA181A1IDBVR
U2, U4, U8, U9
2
AS5047D
U3, U10
1
RP2040-Zero
U5
4
Conn_01x03
J1, J2, J5, J6
1
Conn_01x02
J3
1
Conn_01x07
J4
1
0.1U
2.2uF/16V
C1
1
180P
22uF/16V
C2
1
2000P
0.1uF
C3
1
150P
0.1uF
C4
5
0.1U
0.1uF
C5, C8, C9, C10, C11
1
10.0U/25V
2.2uF/16V
C6
1
10.0U/25V
22uF/16V
C7
1
180P
10nF
C12
1
2000P
10nF
C13
1
100K
0.033/1W
R1
1
0.033/1W
R2
1
3K3
R3
1
22K
3K3
R4
Show 7 more
QtyPartRefs
1
10K
0.033/1W
R5
1
470
0.033/1W
R6
1
470
33K
R7
1
10K
33K
R8
1
10K
33K
R9
1
330K
3K3
R10
1
2K7
3K3
R11

Foc design files

The KiCad project lives in the svofski/tapeshnik repository on GitHub; these links point at the commit this page was built from.

Foc: common questions

What microcontroller does the Foc use?

The Foc is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Foc PCB?

The Foc measures 82 × 43.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Foc?

39 components, from 27 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 Foc design files?

From the svofski/tapeshnik 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 Foc design in my own project?

The repository has no license, so all rights stay with svofski. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Foc without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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