HardLabs

Servo ECU Board

UC-Aerospace·Hybrid25_ECU·Boards/Servo_Board/Servo_Board.kicad_pcb

Servo ECU Board layout, top view — open source STM32 board by UC-Aerospace

About the Servo ECU Board

Servo ECU Board is an open source STM32 PCB design by UC-Aerospace, published on GitHub. It is a 4-layer board measuring 100 × 50 mm, with 84 components from 49 distinct parts.

Its main chip is the STM32G0B1RCT6, from the STM32 family. Other key parts include the TCAN1046AVDYYRQ1, AZ1117CH-3.3TRG1, AZ1117CH-5.0TRG1 and TPS2121RUXR. By type, the board carries 29 resistors, 20 capacitors, 14 connectors, 10 diodes, 5 ICs and 2 fuses.

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

From the project

This repo contains the hardware and firmware for the 2025 Hybrid Rocket Engine FYP test stand electronics.

This repo contains the hardware and firmware for the 2025 Hybrid Rocket Engine FYP test stand electronics.

The hardware consists of three seperate modules, the central ECU alongside a servo and ADC peripheral. Central to peripheral communication uses CAN-FD and is designed to be modular, while communications to a remote interface unit is done over RS422. For more information on the RIU it can be found here.

Servo ECU Board, from the project README
From the project README

Main components on the Servo ECU Board

STM32G0B1RCT6TCAN1046AVDYYRQ1AZ1117CH-3.3TRG1AZ1117CH-5.0TRG1TPS2121RUXR

Servo ECU Board bill of materials (BOM)

84 components, 49 distinct parts.

QtyPartRefs
1
STM32G0B1RCT6
STM32G0B1RCTx
U1
1
TCAN1046AVDYYRQ1
TCAN1046
U2
1
AZ1117CH-3.3TRG1
AZ1117C-3.3
U3
1
AZ1117CH-5.0TRG1
AZ1117C-5.0
U4
1
TPS2121RUXR
U5
1
DMP6023LFG-7
DMP6023LFG
Q1
1
B4B-PH-K-S
SWD JST PH
J1
1
B3B-PH-K-S
UART JST
J2
2
B7B-PH-K-S
Extras JST
J3, J18
1
10118193-0001LF
USB_B_Micro
J4
1
B6B-PH-K-S
I2CA JST
J5
1
B5B-PH-K-S
I2CB JST
J7
1
SPI JST
J8
1
B5B-PH-K-S
I2CC JST
J11
1
0430450412
SERVO B
J14
1
0430450412
SERVO A
J15
1
0430450412
SERVO C
J16
1
0430450412
SERVO D
J17
1
436500315
Backup Power
J19
2
5A
F1, F2
Show 29 more
QtyPartRefs
1
436500228
On Switch
SW1
2
GND
TP19, TP20
1
LTST-C150KRKT
LED_R
D1
1
LTST-C150KGKT
LED_G
D2
1
LTST-C150TBKT
LED_B
D3
2
PESD3V3L4UW
D4, D5
1
MM3Z18VB
18V
D6
2
SMF9.0CA
9V 15.4VC
D7, D10
1
RB521S30T5G
D_0.5VF
D8
1
LM4040CYM3-2.5-TR
2.5V Ref Zener
D9
3
100n
C1, C2, C5
2
4u7
C3, C4
7
100n
C8, C9, C10, C16, C19, C20, C23
2
22u
C11, C13
2
10u
C12, C14
4
SVZ1CM101E06E00RAXXX
100u
C15, C17, C21, C22
1
549R
R1
2
220R
R2, R3
6
10K
R4, R5, R6, R28, R29, R30
2
27R
R7, R8
2
120R
R9, R11
9
100k
R10, R12, R13, R14, R15, R16, R18, R20 +1
1
14K3
R17
1
9K53
R19
1
22K
R22
1
15K
R23
1
6K2
R24
1
4K7
R25
1
1K5
R26

Servo ECU Board design files

The KiCad project lives in the UC-Aerospace/Hybrid25_ECU repository on GitHub; these links point at the commit this page was built from.

Servo ECU Board: common questions

What microcontroller does the Servo ECU Board use?

The Servo ECU Board is built around the STM32G0B1RCT6, from the STM32 family.

How big is the Servo ECU Board?

The Servo ECU Board measures 100 × 50 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Servo ECU Board?

84 components, from 49 distinct parts. The full bill of materials is listed on this page.

Where can I download the Servo ECU Board design files?

From the UC-Aerospace/Hybrid25_ECU repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Servo ECU Board design in my own project?

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

Can I test firmware for the Servo ECU 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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