Hello friends,
I am working on a semester project where I need to design a fire fighting robot. It's not that complex and I am just using a pump to turn on water supply, if there's fire.
Now I also want to get the temperature of the surroundings and display it on the LCD. I have interfaced the LCD which is already showing different parameters. Now I am stuck with the temperature sensor.
I am using 18B20 but it's not working good its showing -127 value. So someone please recommend me some easy to use sensor but accurate as well.
thanks...
How will this sensor be used?
- A temperature sensor at the end of a robotic "finger" that detects the heat of a fire by "touch"? Probably more like a thermocouple that can take the extreme heat.
- More of a "visual" thing -- e.g. an "eye" that "looks around" and provides directional information while detecting infrared radiation that might be coming from a fire? Like maybe a Passive Infrared Sensor [PIR] with a special, more directed, lens? Or perhaps a parabolic reflector with an IR sensor at it's focal point?
- A temperature sensor in front of an insulating barrier, giving the robot a clue if it approaches a fire? Probably more like an IC temperature sensor.
- Something I didn't think of?
UPDATE:
Also, it occurs to me to ask this question:
Is this more about figuring out why you're only getting a value of -127 when attempting to interface with that 18B20, or are you, indeed, looking for an alternative to the 18B20?
Hi,
The DS18B20 is easy to use. The number you got means it is not reading data back. See LOTS of how-to here:
http://arduinoinfo.mywikis.net/wiki/Brick-Temperature-DS18B20