joshuaboniface/microenv
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update README with recent updates and add board

Browse Source
This commit is contained in:
Joshua Boniface
2025-07-06 03:14:44 -04:00
parent a3fd97b43a
commit 78555445d2
5 changed files with 31476 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
README.md
View File

@ -1,29 +1,34 @@
# MicroEnv v1.x
MicroEnv is a compact and simplistic environmental monitoring sensor,
based on the ESP32-C3 and the Sensirion SGP30 and SHT45 sensors, using
The MicroEnv is a compact and simplistic environmental monitoring sensor,
based on the ESP32-C3 and the Sensirion SGP41 and SHT45 sensors, using
ESPHome for integration with HomeAssistant
Use a MicroEnv near a source of emissions to monitor air quality, or as
a general room environmental tracking sensor.
a general room environmental tracking sensor. It is, in effect, a cut
down version of the environmental sensor package of my [Supersensor 2.x](https://github.com/joshuaboniface/supersensor2)
project in a much smaller footprint.
Power is provided by USB-C, though a very slim cable is required when
Power is provided by USB-C, though a very slim connector is required when
using SMD soldering without a buffer.
The Sensirion sensors are elevated with through-hole pins, to ensure
optimal distance between the (warm) board and the sensors themselves.
You can either directly solder the sensors to the board or, as I do,
use 4-pin female sockets for easy changing should it be necessary.
For more details, please [see my blog post on the MicroEnv project](https://www.boniface.me/the-microenv/).
![MicroEnv Board Design](/board/pcb.svg)
## Parts List
| Qty | Component | Cost (2025/05 CAD, ex. shipping) | Links |
|-------|--------------------|----------------------------------|-------|
| 1 | GY-SGP30 | $5.73 | [AliExpress](https://www.aliexpress.com/item/1005008473372972.html) |
| 1 | GY-SHT45 | $5.67 | [AliExpress](https://www.aliexpress.com/item/1005008175340220.html)* |
| 1 | ESP32-C3 | $3.12 | [AliExpress](https://www.aliexpress.com/item/1005007205044247.html) |
| 1 | Custom PCB (JLC) | $0.50 ($5.00/10) | [GitHub](https://github.com/joshuaboniface/microenv) |
| **TOTAL** | | **$15.02** | |
| Qty | Component | Cost (mid-2025 CAD, ex. shipping) | Links |
|-------|---------------------|-----------------------------------|-------|
| 1 | GY-SGP41 | $9.58 | [AliExpress](https://www.aliexpress.com/item/1005007958589642.html) |
| 1 | GY-SHT45 | $5.67 | [AliExpress](https://www.aliexpress.com/item/1005008175340220.html)* |
| 1 | ESP32-C3 | $3.12 | [AliExpress](https://www.aliexpress.com/item/1005007205044247.html) |
| 2 | Female 4-pin header | $0.37 ($14.99/40) | [Amazon](https://www.amazon.ca/dp/B08LF3S5S8) |
| 1 | Custom PCB (JLC) | $0.50 ($5.00/10) | [GitHub](https://github.com/joshuaboniface/microenv/tree/master/board) |
| **TOTAL** | | **$19.24** | |
`*` Ensure you select the correct device on the page as it shows multiple options.
@ -44,3 +49,8 @@ calibration may be needed for your sensors and environment.
Allows calibration of the SHT45 humidity sensor with an offset from -20 to +20
percent relative humidity. Useful if the sensor is misreporting actual humidity.
## Home Assistant View
This image shows the various available sensors in Home Assistant.
![MicroEnv Home Assistant](/microenv-homeassistant.png)

31242
board/pcb.dxf Normal file
View File

File diff suppressed because it is too large Load Diff

135
board/pcb.easyeda.json Normal file
View File

File diff suppressed because one or more lines are too long

77
board/pcb.svg Normal file
View File

File diff suppressed because one or more lines are too long
Side by Side

After

Width:  |  Height:  |  Size: 75 KiB

BIN
microenv-homeassistant.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 174 KiB