HardLabs

Cjmcu2

aeracoop·cjmcu2

Cjmcu2 PCB layout, top view — open source STM32 board by aeracoop

About the Cjmcu2 PCB

Cjmcu2 is an open source STM32 PCB design by aeracoop, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 57.8 × 57.2 mm, with 62 components from 28 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the TPS73033DBVT, HMC5883L and MPU6050. By type, the board carries 18 resistors, 17 capacitors, 10 connectors, 5 transistors, 5 diodes and 4 ICs.

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

From the project

An alternative version of the quadcopter CJMCU

Main components on the Cjmcu2

TPS73033DBVTSTM32F103C8T6HMC5883LMPU6050

Cjmcu2 bill of materials (BOM)

62 components, 28 distinct parts.

QtyPartRefs
1
TPS73033DBVT
U1
1
STM32F103C8T6
U2
1
HMC5883L
U3
1
MPU6050
U4
4
IRLML2502
Q1, Q2, Q3, Q4
1
Q_PMOS_DGS
Q5
1
8MHz
Y1
7
CONN_01X02
P1, P4, P9, P10, P11, P12, P13
1
CONN_01X04
P2
1
CONN_01X05
P3
1
Pin_Header_Straight_1x04
P14
1
ESP8266(TX&RX)
W1
1
NRF24L01
W2
4
LED
D1, D2, D3, D4
1
D
D5
2
4,7uF
C1, C16
2
22pF
C2, C3
1
475
C4
9
0,1uF
C5, C6, C7, C8, C9, C10, C11, C14 +1
1
0,22uF
C12
Show 8 more
QtyPartRefs
1
10nF
C13
1
2,2nF
C15
3
551
R1, R2, R3
1
0
R4
8
10k
R5, R7, R8, R10, R11, R14, R17, R18
1
1M
R6
1
1k
R9
4
20k
R12, R13, R19, R20

Cjmcu2 design files

The KiCad project lives in the aeracoop/cjmcu2 repository on GitHub; these links point at the commit this page was built from.

Cjmcu2: common questions

What microcontroller does the Cjmcu2 use?

The Cjmcu2 is built around the STM32F103C8T6, from the STM32 family.

How big is the Cjmcu2 PCB?

The Cjmcu2 measures 57.8 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cjmcu2?

62 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cjmcu2 design files?

From the aeracoop/cjmcu2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Cjmcu2 design in my own project?

Yes, under the terms of its GPL-3.0 license, which aeracoop chose for the repository.

Can I test firmware for the Cjmcu2 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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