HardLabs

I2C Motor Driver

Stevemwa·PCB_Designs·I2C Motor Driver/I2C Motor Driver.kicad_pcb

I2C Motor Driver PCB layout, top view — open source STM32 board by Stevemwa

About the I2C Motor Driver PCB

I2C Motor Driver is an open source STM32 PCB design by Stevemwa, published on GitHub. It is a 4-layer board measuring 86.1 × 66.3 mm, with 98 components from 37 distinct parts.

Its main chip is the STM32F103C8TX, from the STM32 family. Other key parts include the 7400, IR2104, L7805, L7815 and AMS1117-3.3. By type, the board carries 26 capacitors, 24 diodes, 16 resistors, 10 ICs, 9 transistors and 9 connectors.

It belongs with the robotics & motion and dev boards & breakouts designs in this gallery.

From the project

This Repo contains my various PCB Designs

I2C Motor Driver, from the project README
From the project README

Main components on the I2C Motor Driver

STM32F103C8TX7400IR2104L7805L7815AMS1117-3.3

I2C Motor Driver bill of materials (BOM)

98 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F103C8TX
STM32F103C8Tx
U1
2
7400
U2, U3
4
IR2104
U4, U5, U6, U7
1
L7805
U8
1
L7815
U9
1
AMS1117-3.3
U10
9
IRLZ44N
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +1
1
16MHZ
16MHz
Y1
2
SWD
J1, J3
2
CONN_01X04_PIN
Conn_01x04_Pin
J2, J6
1
CONN_01X03_PIN
Conn_01x03_Pin
J4
1
USB_B_Micro
J5
1
MOTOR_A
J7
1
MOTOR_B
J8
1
+24V_INPUT
J9
1
SW_DPST_X2
SW_DPST_x2
SW1
1
SW_SPDT
SW2
1
BLUE
D1
1
GREEN
D2
4
D
D3, D12, D13, D22
Show 17 more
QtyPartRefs
8
1N4148
D4, D5, D10, D11, D14, D15, D20, D21
8
1N5819
D6, D7, D8, D9, D16, D17, D18, D19
1
15V
15v
D23
1
RED
D24
1
120R
FB1
2
10UF
10uF
C1, C22
4
100NF
100nF
C2, C3, C4, C8
6
1UF
1uF
C5, C7, C11, C14, C15, C18
1
10NF
10nF
C6
2
10PF
10pF
C9, C10
4
1.5UF
1.5uF
C12, C13, C16, C17
1
100UF
100uF
C19
4
22UF
22uF
C20, C21, C23, C24
2
1uF
C25, C26
2
10K
10k
R1, R15
6
1K5
R2, R3, R4, R5, R6, R16
8
30R
R7, R8, R9, R10, R11, R12, R13, R14

I2C Motor Driver design files

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

I2C Motor Driver: common questions

What microcontroller does the I2C Motor Driver use?

The I2C Motor Driver is built around the STM32F103C8TX, from the STM32 family.

How big is the I2C Motor Driver PCB?

The I2C Motor Driver measures 86.1 × 66.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the I2C Motor Driver?

98 components, from 37 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 I2C Motor Driver design files?

From the Stevemwa/PCB_Designs 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 I2C Motor Driver design in my own project?

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

Can I test firmware for the I2C Motor Driver 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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