Air quality sensor mcp
About the Air quality sensor mcp PCB
Air quality sensor mcp is an open source PCB design by havamal-65, published on GitHub. It is a 2-layer board measuring 80 × 60 mm, with 16 components from 13 distinct parts.
Other key parts include the XIAO_ESP32C3, Adafruit_SCD41, Adafruit_SGP41, SSD1306_OLED_128x64 and TP4056_USB-C_Module. By type, the board carries 5 ICs, 4 capacitors, 4 resistors, 2 LEDs and 1 connector.
It belongs with the sensors designs in this gallery.
From the project
This directory contains the KiCad MCP design iteration for this project (updated 2026-02-23).
Main components on the Air quality sensor mcp
Air quality sensor mcp bill of materials (BOM)
16 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XIAO_ESP32C3 | XIAO_ESP32C3 | U1 |
| 1 | Adafruit_SCD41 | Adafruit_SCD41 | U2 |
| 1 | Adafruit_SGP41 | Adafruit_SGP41 | U3 |
| 1 | SSD1306_OLED_128x64 | SSD1306_OLED_128x64 | U4 |
| 1 | TP4056_USB-C_Module | TP4056_USB-C_Module | U5 |
| 1 | JST_PH_2pin_Battery | JST_PH_2pin_Battery | J1 |
| 1 | RED | LED_0805_2012Metric | LED1 |
| 1 | GREEN | LED_0805_2012Metric | LED2 |
| 3 | 100nF | C_0603_1608Metric | C1, C2, C3 |
| 1 | 10uF | C_0805_2012Metric | C4 |
| 2 | 4.7k | R_0603_1608Metric | R1, R2 |
| 1 | 1.2k | R_0603_1608Metric | R3 |
| 1 | 1k | R_0603_1608Metric | R4 |
Air quality sensor mcp design files
The KiCad project lives in the havamal-65/air-quality-sensor repository on GitHub; these links point at the commit this page was built from.
Air quality sensor mcp: common questions
How big is the Air quality sensor mcp PCB?
The Air quality sensor mcp measures 80 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Air quality sensor mcp?
16 components, from 13 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 Air quality sensor mcp design files?
From the havamal-65/air-quality-sensor 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 Air quality sensor mcp design in my own project?
The repository has no license, so all rights stay with havamal-65. Use it as a reference, and ask the author before reusing the design.
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