DATA Logger 3Wichit Sirichote, wichit.sirichote@gmail.com
Simple design data logging device, cheap and easy to use with 22-bit resolution sigma-delta ADC.
The DATA Logger 3 is designed for use in school. Simple design, the shortest path for analog signals, extremely high resolution analog to digital conversion, cheap and high capacity data storage. Detect the microvolt changed of analog signal with the Delta-sigma converter.
DATA Logger 3
The DATA Logger 3 features:
Components Layout
Assembled and tested version is available now. Free SD card and USB power cable, ready for experimenting!
SD card is used for CSV data file storage. Up to 8 GB with FAT32 can be used..
Optional battery socket for 4xAA normal battery or 2xAA Li-ion battery.
Sample plot of built-in LM35 precision temperature sensor.
Using standard AAx2 battery holder
To delete the dummy battery (blue color), the standard battery holder can be placed with some cutting of the box.
Using cutting and holes template
The cutting and holes template can be printed and taped on the box. Then we can drill the hole and cut the SD card slot easily.
Download:
Source code and hex file for PIC18F46K20 MCU
Cutting and holes template for Future box FB21
Assembly Manual, rev 1.0 September 2021
Operating Manual, rev 1.0 September 2021More technical information, please contact Wichit Sirichote, wichit.sirichote@gmail.com
Last updated February 1, 2026
September 28 , 2021
