This project shows how to build a data logger for humidity and temperature using the SHT11 or SHT15 sensor. This is a full digital sensor connected to AT90S8535 AVR microcontroller.
SHT11: Digital Temperature and Humidity Sensor - [Link]
A data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, etc. This project describes how to build a mini logger that records surrounding temperature values. It has following features:
– Uses just one 8?pin chip, so very compact size circuit.
– Temperature range: 0 to +125°C.
– Can store up to 254 measurements.
– Sampling interval options: 1 sec, 1 min, 10 min
– Reset feature to clear all previous measurements.
– Serial transfer of recorded measurements to a PC
– Three tactile switches for user inputs and a LED indicator.
Single Chip Temperature Data Logger - [Link]
Virtins Multi-Instrument is a powerful PC based (using sound card) multi-function virtual instrument software with many features like Oscilloscope, Spectrum Analyzer, Signal Generator, Spectrum 3D Plot, Data Logger, LCR Meter etc. Version 3.2 is released and available for download as 21 day full functional trial at virtins.com
Virtins Multi-Instrument 3.2 released - [Link]
This project combines a GPS receiver module, a Microchip PIC microcontroller and a Secure Digital memory card to make a GPS data logger. With a large capacity and reasonably long battery life it is a very useful device for logging GPS position.
GPS to SD-Card Data Logger - [Link]
crazyrobotsoftware.com writes : As an educational experiment, I decided to build a small temperature sensor, and data logger. Since I have little experience with direct Analog to Digital (A->D) converters, I decided to start out with a little more “meaty” hardware. I used a Basic Stamp II (BOE) BS2-IC microcontroller to capture temperature using a Sensirion Temperature and Humidity Sensor, and display using a 2×16 Serial Display. [via]
PIC Microcontroller Temperature Sensor - [Link]
This is a Data logger to save values from a tipping-bucket rain gauge.It consist of on-board 4mBit (512kB) Dataflash is used to store the values. Readout to the Windows download software developed for this project takes place via serial port (RS232).
AVR Butterfly Logger - [Link]