If you’re looking for a good thermometer that can assists you in the electronic works, why don’t you spare some time and develop a “programmable AVR 1- Wire Thermostat” for your own use?

First of all, you will need the following hardware components:

• A Dallas DS18S20 1-wire thermostat (for measure the temperature)
• A standard PC floppy drive cable (for connect the DS18S20 to the development board)
• 12V power supplies
• Atmel AVR JTAG ICE mkII programming and debugging tool
• Squid cable
• A standard cable to connect the thermostat to the PC

For the assembling process, plug the floppy cable to the EXT1 and EXT2 headers, where the key is on the cable pointing away from the center of the board. At this point, the floppy cable will fit on the headers perfectly without any small space to spare.

After it, plug the DS18S20 into the other end of the cable, which as shown in the below figure. However, you have to ensure that you pay attention to the direction the key on the cable is pointing. It is a very critical situation that you must plugged the thermostat chip into the exact socket holes which shown as below figure.

Lastly, don’t forget to wire up the JTAG cable directly to the back of the board. Voila, you’re now ready for programming the device!

Note: you can find the software releases at here.