HardLabs

Stm32Co2

t3ry4git·stm32Co2·GRAPH/Terentiev_I_D_draw_KiCAD/diploma.kicad_pcb

Stm32Co2 PCB layout, top view — open source STM32 board by t3ry4git

About the Stm32Co2 PCB

Stm32Co2 is an open source STM32 PCB design by t3ry4git, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 100 mm, with 60 components from 36 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the TP4056, DW01A, MT3608, AP2112K-3.3 and DHT22. By type, the board carries 19 capacitors, 15 resistors, 7 ICs, 6 diodes, 3 connectors and 3 switches.

It belongs with the displays & leds and sensors designs in this gallery.

From the project

A simple CO2 and environmental monitor based on the STM32F103C8 microcontroller. The firmware reads temperature and humidity from a DHT22 sensor, measures CO2 concentration using an MHZ19B module and displays values on an SSD1306 OLED screen.

A simple CO2 and environmental monitor based on the STM32F103C8 microcontroller. The firmware reads temperature and humidity from a DHT22 sensor, measures CO2 concentration using an MHZ19B module and displays values on an SSD1306 OLED screen.

- MCU: STM32F103C8 ("Blue Pill" or compatible) - Temperature/Humidity sensor: DHT22 - CO2 sensor: MHZ19B (UART interface) - Display: SSD1306 I2C OLED

Main components on the Stm32Co2

TP4056DW01AMT3608AP2112K-3.3STM32F103C8T6DHT22MH-Z19B

Stm32Co2 bill of materials (BOM)

60 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TP4056
U1
1
DW01A
U2
1
MT3608
U3
1
AP2112K-3.3
U4
1
STM32F103C8T6
U5
1
DHT22
U6
1
MH-Z19B
U7
1
FS8205A
Q1
1
8MHZ
8MHz
Y1
1
32768HZ
32768Hz
Y2
1
OLED_LCD
J1
1
Flash
J2
1
USBC
P1
2
1043
BT1, BT2
1
2.2 k
RV1
1
Enable Switch
SW1
1
Calibrate
SW2
1
Reset
SW3
1
RED
D1
3
GREEN
D2, D4, D5
Show 16 more
QtyPartRefs
2
SS34
D3, D6
1
22UH/2A
22uH/2A
L1
1
1 nF
C1
5
10 uF
C2, C4, C8, C9, C14
8
100 nF
C5, C7, C10, C11, C12, C13, C15, C20
1
22 uF
C6
2
100 pF
C16, C17
2
12 pF
C18, C19
1
1 M
R1
1
1.2K
1.2k
R2
3
10 k
R3, R8, R16
2
1k
R4, R5
3
100 k
R7, R9, R10
1
5.1 k
R11
2
100K
100k
R12, R15
2
510
R13, R14

Stm32Co2 design files

The KiCad project lives in the t3ry4git/stm32Co2 repository on GitHub; these links point at the commit this page was built from.

Stm32Co2: common questions

What microcontroller does the Stm32Co2 use?

The Stm32Co2 is built around the STM32F103C8T6, from the STM32 family.

How big is the Stm32Co2 PCB?

The Stm32Co2 measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Stm32Co2?

60 components, from 36 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 Stm32Co2 design files?

From the t3ry4git/stm32Co2 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 Stm32Co2 design in my own project?

Yes, under the terms of its MIT license, which t3ry4git chose for the repository.

Can I test firmware for the Stm32Co2 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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