BYO CO2 Monitor Prototype
About the BYO CO2 Monitor Prototype PCB
BYO CO2 Monitor Prototype is an open source ESP32 PCB design by romkey, published on GitHub under the MIT license. It is a 2-layer board measuring 82 × 90 mm, with 21 components from 18 distinct parts.
Its main chip is the Xiao ESP32S3, from the ESP32 family. By type, the board carries 13 connectors, 4 ICs, 3 resistors and 1 diode.
It belongs with the sensors and iot & wireless designs in this gallery.
From the project
Open source hardware and software portable CO2/air quality monitor
Build Your Own Portable CO2 Monitor is a [PDX Hackerspace] project.
- minimize cost - true CO2 measurement - choice of displays - optional Home Assistant integration - optional battery operation - version that people who are inexperienced with soldering can build - more integrated version for people who can assemble surface mount hardware - open source software and hardware
BYO CO2 Monitor Prototype bill of materials (BOM)
21 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | Xiao ESP32S3 | U1 |
| 3 | ~ | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | U2, U3, U4 |
| 1 | ~ | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J1 |
| 1 | ~ | PMS5003 Connector | J2 |
| 1 | ~ | LiPo Connector | J3 |
| 1 | ~ | Adafruit BMx8x Breakout | J4 |
| 1 | ~ | Generic BMx8x Breakout | J5 |
| 1 | ~ | Adafruit eInk Breakout Friend | J6 |
| 1 | ~ | Adafruit eInk Breakout (GENERIC) | J7 |
| 1 | ~ | Adafruit SCD4x Breakout | J8 |
| 1 | ~ | Generic SCD4x Breakout | J9 |
| 1 | ~ | Generic I2C OLED | J10 |
| 1 | ~ | Wavshare ePaper SPI | J11 |
| 1 | ~ | Waveshare ePaper SPI JST | J12 |
| 1 | ~ | SPI_TFT_TOUCH | J13 |
| 1 | LED | LED_D3.0mm | D1 |
| 1 | 130 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 2 | 4.7K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3 |
BYO CO2 Monitor Prototype design files
The KiCad project lives in the romkey/pdxhackerspace-portable-co2-monitor repository on GitHub; these links point at the commit this page was built from.
BYO CO2 Monitor Prototype: common questions
What microcontroller does the BYO CO2 Monitor Prototype use?
The BYO CO2 Monitor Prototype is built around the Xiao ESP32S3, from the ESP32 family.
How big is the BYO CO2 Monitor Prototype PCB?
The BYO CO2 Monitor Prototype measures 82 × 90 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the BYO CO2 Monitor Prototype?
21 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the BYO CO2 Monitor Prototype design files?
From the romkey/pdxhackerspace-portable-co2-monitor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the BYO CO2 Monitor Prototype design in my own project?
Yes, under the terms of its MIT license, which romkey chose for the repository.
Can I test firmware for the BYO CO2 Monitor Prototype 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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