Tinycorder Environmental Data Logger

by Egokitek · Advanced

A pocket-size ESP32-C3 data logger with a low-power Sharp Memory LCD and sensors for CO₂, temperature, humidity, pressure and visible-light spectra.

Tinycorder combines environmental sensing and local logging in a small rechargeable instrument. Its repository provides firmware, an Excel BOM, Spanish assembly instructions and printable enclosure files.

Original: github.com, github.com, github.com, github.com

Printable files

File links are being added. Check the original source above in the meantime.

Tinycorder enclosure STL set — Four STL files are linked in the repository STL directory. Repository metadata declares GPL-3.0, but no separate hardware/model license notice was found; review scope before redistribution or commercial printing.

Jump to the parts list ↓ · License tags say whether you may sell prints (NC = non-commercial).

Parts

Qty	Part	Price	Buy
1×	Seeed Studio XIAO ESP32C3 Creator BOM specifies one Seeed Studio XIAO ESP32-C3; assembly guide shows its placement and soldering.	—	Seeed Studio
1×	2.7-inch Sharp Memory Display Creator BOM specifies one 2.7-inch Sharp Memory LCD; assembly guide covers display wiring and mounting.	—	Adafruit
1×	SCD40 CO₂ sensor breakout Creator BOM specifies one SCD40 breakout; assembly guide identifies its connector and placement.	—	Adafruit
1×	AS7341 10-channel light/color sensor breakout Creator BOM specifies one AS7341 breakout; assembly guide identifies its connector and placement.	—	Adafruit
1×	BMP280 temperature and barometric pressure breakout Creator BOM specifies one BMP280 breakout; assembly guide identifies its connector and placement.	—	Adafruit
1×	3.7V 150mAh LiPo battery Creator BOM specifies one 150mAh lithium battery; assembly guide covers connection and enclosure placement.	—	Adafruit
1×	8×12-hole prototyping board Creator BOM specifies one 8×12-hole prototyping board; assembly guide shows trimming and component placement.	—	Adafruit Search Amazon
1×	Subminiature toggle switch Creator BOM specifies one subminiature toggle switch; assembly guide covers mounting and wiring.	—	Search DigiKey
3×	6×6mm tactile pushbutton Creator BOM quantity column specifies three 6×6mm tactile buttons; assembly guide shows placement.	—	Search DigiKey
8×	M3×10mm machine screw Creator assembly guide and enclosure hardware callout specify eight M3×10mm screws.	—	Search DigiKey
	Parts cost estimate coming soon: prices are being checked at reputable sellers.

Notes

Verified against the creator repository README, BOM.xls, Spanish assembly guide and STL index at immutable source commit a584f0932e5e337202a9bf4de502ccac8495705b on 2026-10-22. The published BOM, quantity column, wiring/assembly sequence and four enclosure files cover the critical components and fabrication steps. The repository is GPL-3.0; printable-file reuse should preserve that license and source obligations.

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