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AirMQ - 2.0.2

AirMQ·AirMQ-sensor·Hardware/Mainboard/2.0.2/AirMQ - 2.0.2.kicad_pcb

AirMQ - 2.0.2 PCB layout, top view — open source ESP32 board by AirMQ

About the AirMQ - 2.0.2 PCB

AirMQ - 2.0.2 is an open source ESP32 PCB design by AirMQ, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 98 × 49 mm, with 62 components from 41 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the SCD40, GY-Sensor, PMS7003, USBLC6-2SC6 and STI3470. By type, the board carries 23 capacitors, 13 resistors, 8 ICs, 7 connectors, 3 jumpers and 3 diodes.

It belongs with the sensors designs in this gallery.

From the project

Root repository for AirMQ hardware project

Main components on the AirMQ - 2.0.2

SCD40GY-SensorESP32-C3-WROOM-02PMS7003USBLC6-2SC6STI3470SY7088

AirMQ - 2.0.2 bill of materials (BOM)

62 components, 41 distinct parts.

QtyPartRefs
1
SCD40
U1
2
GY-Sensor
U2, U3
1
ESP32-C3-WROOM-02
U4
1
PMS7003
U5
1
USBLC6-2SC6
U6
1
STI3470
U7
1
SY7088
U8
1
1Wire/LED
J1
1
I2C
J2
1
EXT
J3
1
UART
J4
1
SEN5x
J5
1
USB_C
J6
1
MAIN_PWR
J7
1
0.5A
F1
2
SolderJumper_3_Open
JP1, JP4
1
TX
JP2
1
RESET
SW1
1
BOOT
SW2
1
WS2812B
D1
Show 21 more
QtyPartRefs
1
D_TVS
D2
1
SC34
D3
1
2.2 uH
L1
1
4.7 uH
L2
2
10 uF
C1, C2
12
0.1 uF
C3, C5, C10, C12, C13, C14, C15, C17 +4
1
22 nF
C4
2
22 uF
C6, C7
1
0.1
C8
3
1 uF
C9, C16, C19
1
330 uF
C11
1
100 uF
C18
1
100k
R1
1
150k
R2
1
33k
R3
1
510k
R4
1
160k
R5
4
10k
R6, R7, R8, R10
1
4.7k
R9
2
5.1k
R11, R12
1
0R
R13

AirMQ - 2.0.2 design files

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

AirMQ - 2.0.2: common questions

What microcontroller does the AirMQ - 2.0.2 use?

The AirMQ - 2.0.2 is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the AirMQ - 2.0.2 PCB?

The AirMQ - 2.0.2 measures 98 × 49 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AirMQ - 2.0.2?

62 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the AirMQ - 2.0.2 design files?

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

Can I use the AirMQ - 2.0.2 design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which AirMQ chose for the repository.

Can I test firmware for the AirMQ - 2.0.2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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