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Pcb pwm board

Mich-Dich·pcb_pwm_board·ki_cad/pwm_board.kicad_pcb

Pcb pwm board layout, top view — open source STM32 board by Mich-Dich

About the Pcb pwm board

Pcb pwm board is an open source STM32 PCB design by Mich-Dich, published on GitHub under the MIT license. It is a 4-layer board measuring 60 × 43 mm, with 91 components from 31 distinct parts.

Its main chip is the STM32L010F4P6, from the STM32 family. Other key parts include the SP3485EN, TPS5430DDA and PCA9635PW,118. By type, the board carries 27 resistors, 20 capacitors, 19 connectors, 10 diodes, 7 transistors and 5 ICs.

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

From the project

A PCB created with KiCad whats provides 10 servo outputs and 6 general purpose 12V outputs. It communicates via RS-485

The PWM Board is a 16‑channel PWM controller board designed for driving servos, LEDs, or small DC motors. It is built around the PCA9685 16‑channel 12‑bit PWM driver, controlled by an STM32L010F4P6 Arm® Cortex®‑M0+ MCU. Communication is via RS‑485 (using a SP3485 transceiver), making it suitable for remote or industrial applications. The board also features six low‑side N‑MOSFET outputs (with flyback diodes) for higher‑current loads such as motors or solenoids, and a dedicated 3.3 V buck converter (SY81051) that generates the logic supply from a 12 V input.

Pcb pwm board, from the project README
From the project README

Main components on the Pcb pwm board

STM32L010F4P6SP3485ENTPS5430DDAPCA9635PW,118

Pcb pwm board bill of materials (BOM)

91 components, 31 distinct parts.

QtyPartRefs
1
STM32L010F4P6
U1
1
SP3485EN
U2
2
TPS5430DDA
U3, U6
1
PCA9635PW,118
U5
6
Q_NMOS
Q0, Q1, Q2, Q3, Q4, Q5
1
Q_NMOS
Q7
10
Conn_01x03_Pin
J0, J1, J2, J3, J4, J5, J6, J7 +2
1
SWD_CONN
J11
6
Conn_01x02_Pin
J12, J13, J14, J15, J16, J17
1
Communiation_IN
J18
1
Power_IN
J19
1
USER_SW
SW1
2
SS34
D1, D10
1
RED
D2
1
GREEN
D3
6
D
D4, D5, D6, D7, D8, D9
2
15u
L1, L2
2
100n
C1, C4
6
10u
C2, C5, C6, C7, C14, C15
2
10u
C3, C21
Show 11 more
QtyPartRefs
4
100u
C8, C9, C18, C19
2
22u
C10, C20
2
10u
C11, C16
2
10n
C12, C17
7
10K
R1, R22, R23, R24, R25, R26, R27
2
1K5
R3, R4
2
12k
R5, R9
2
6K8
R6, R28
2
51k
R7, R8
10
220
R10, R11, R12, R13, R14, R15, R16, R17 +2
2
4K7
R20, R21

Pcb pwm board design files

The KiCad project lives in the Mich-Dich/pcb_pwm_board repository on GitHub; these links point at the commit this page was built from.

Pcb pwm board: common questions

What microcontroller does the Pcb pwm board use?

The Pcb pwm board is built around the STM32L010F4P6, from the STM32 family.

How big is the Pcb pwm board?

The Pcb pwm board measures 60 × 43 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Pcb pwm board?

91 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pcb pwm board design files?

From the Mich-Dich/pcb_pwm_board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Pcb pwm board design in my own project?

Yes, under the terms of its MIT license, which Mich-Dich chose for the repository.

Can I test firmware for the Pcb pwm board 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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