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Stm32-robot brain

Sebastian-S-Posada·stm32-robot-brain-pcb·hardware/2025_04_STM32F103_RobotBrain.kicad_pcb

Stm32-robot brain PCB layout, top view — open source STM32 board by Sebastian-S-Posada

About the Stm32-robot brain PCB

Stm32-robot brain is an open source STM32 PCB design by Sebastian-S-Posada, published on GitHub. It is a 2-layer board measuring 90 × 80 mm, with 47 components from 31 distinct parts.

Its main chip is the STM32F103RCTX, from the STM32 family. Other key parts include the USBLC6-2SC6. By type, the board carries 11 connectors, 11 capacitors, 10 resistors, 4 diodes, 3 switches and 2 ICs.

It belongs with the robotics & motion, iot & wireless and sensors designs in this gallery.

From the project

A custom controller board for a small mobile robot, designed in KiCad. It's built around an STM32F103RCT6 microcontroller and brings together motor drive, sensor, Bluetooth, and programming connections on one 2-layer board.

A custom controller board for a small mobile robot, designed in KiCad. It's built around an STM32F103RCT6 microcontroller and brings together motor drive, sensor, Bluetooth, and programming connections on one 2-layer board.

- MCU: STM32F103RCT6 (ARM Cortex-M3, LQFP-64) with a 16 MHz crystal - Bluetooth: MDBT42T-AT module (nRF52-based BLE) - USB: Mini-B connector with USBLC6-2SC6 ESD protection and a resettable PTC fuse - Programming: SWD header, plus BOOT and RESET switches - Sensor headers: MPU6050 IMU and ultrasonic distance sensor - Robot I/O: motor driver, Hall-effect encoders, track…

Stm32-robot brain, from the project README
From the project README

Main components on the Stm32-robot brain

STM32F103RCTXUSBLC6-2SC6

Stm32-robot brain bill of materials (BOM)

47 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F103RCTX
STM32F103RCTx
U1
1
USBLC6-2SC6
U2
1
BSS138
Q1
1
16MHZ
16MHz
Y2
1
USB_B_Mini
J1
1
CONN_MPU6050
J2
1
CONN_ULTRA
J3
1
CONN_SWD
J4
1
CONN_5V
J5
1
CONN_3V3
J6
1
CONN_DRIVE
J7
1
CONN_HAL
J8
1
CONN_PS2
J9
1
CONN_TRACK
J10
1
CONN_UART
J11
1
PTCSMD
F1
1
MDBT42T-AT
MDBT42T-AT1
1
JS202011SCQN
S1
1
SW_uP_Reset
SW1
1
SW_USER
SW2
Show 11 more
QtyPartRefs
2
IN-PI55TATPRPGPB
LED1, LED2
1
USB_PWR_LED
D1
1
uP_PWR_LED
D2
1
USER_LED
D3
1
BL_IND_LED
D4
7
0.1UF
0.1uF
C1, C2, C3, C4, C5, C11, C12
1
10UF
10uF
C6
1
0.01UF
0.01uF
C7
2
22PF
22pF
C8, C9
8
10K
10k
R1, R4, R5, R6, R7, R8, R9, R10
2
22
R2, R3

Stm32-robot brain design files

The KiCad project lives in the Sebastian-S-Posada/stm32-robot-brain-pcb repository on GitHub; these links point at the commit this page was built from.

Stm32-robot brain: common questions

What microcontroller does the Stm32-robot brain use?

The Stm32-robot brain is built around the STM32F103RCTX, from the STM32 family.

How big is the Stm32-robot brain PCB?

The Stm32-robot brain measures 90 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Stm32-robot brain?

47 components, from 31 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 Stm32-robot brain design files?

From the Sebastian-S-Posada/stm32-robot-brain-pcb 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 Stm32-robot brain design in my own project?

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

Can I test firmware for the Stm32-robot brain 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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