erock2112
Well-Known Member
Hey guys. I just got my Arduino Duamilanove in the mail, and I've put together a few temperature probes using thermistors to monitor fermentation temperatures. I'm in the process of building a probe in which to put a more accurate LM34 sensor for monitoring mash temperatures. The design for the thermistor probe comes from: http://home.chattanooga.net/~cdp/thermis/thermist.htm
Parts:
3 x 10KOhm Thermistor
1 x LM34 sensor
3 x 10K Resistor
1 x Arduino USB
1 x 3/8 OD 24 inch copper tubing (cut into 3 x 8" lengths)
1 x 3/8 OD 12-inch copper tubing
Wires - I used some speaker wire which fit nicely inside the copper tubing
Silicone Sealant
Solder, shrink tubing etc
Thermistors, LM34 and copper tubing (sorry for the cell phone pics):
Arduino!
Thermistors and LM34 soldered
Completed thermistor probes, sealed with silicone. I'm using an "Electronic Project Lab" for its breadboard - disregard that and the half adder assembled on the left part of the breadboard. At this point, the probes are connected through basic voltage divider circuits with 10K resistors to the Arduino's analog inputs.
I also now have the LM34 hooked up, but it's not yet housed. The output from the Arduino onto my screen:
Parts:
3 x 10KOhm Thermistor
1 x LM34 sensor
3 x 10K Resistor
1 x Arduino USB
1 x 3/8 OD 24 inch copper tubing (cut into 3 x 8" lengths)
1 x 3/8 OD 12-inch copper tubing
Wires - I used some speaker wire which fit nicely inside the copper tubing
Silicone Sealant
Solder, shrink tubing etc
Thermistors, LM34 and copper tubing (sorry for the cell phone pics):
Arduino!
Thermistors and LM34 soldered
Completed thermistor probes, sealed with silicone. I'm using an "Electronic Project Lab" for its breadboard - disregard that and the half adder assembled on the left part of the breadboard. At this point, the probes are connected through basic voltage divider circuits with 10K resistors to the Arduino's analog inputs.
I also now have the LM34 hooked up, but it's not yet housed. The output from the Arduino onto my screen: