Hey, I've very new to arduino and was hoping for some help with wiring. I am wanting to monitor the temperature of meat with my arduino. I am planning to use a Maverick ET-73 Meat Probe. So far I am planning to buy a PCB mount 2.5mm female jack. It looks like the probe has 2 wires and the female mono jack has 3. How do I know which ones to wire? Do I wire one to 5V and one to the ground with a resistor in connected in series with the 5V and then find the voltage difference in the middle and send that voltage difference to an analog pin?
Yes, its a Maverick ET-732 temperature probe (thermistor). I think I figured out the PCB mount stuff, but now onto the next issue. I understand that I need to utilize a voltage divider to get and use the Steinhart-Hart equation to determine the temperature. However, I am having trouble understanding what resistor value to use for the voltage divider. I have seen a lot of people recommend 22kohm. When i measure the resistance of the probe at room temp, I get ~1Mohm. Is the 22kohm because that is the approximate resistance value around smoking meat temps (~220F)?
The resistor should be roughly the same value as your probe's resistance at the temperature you care about most, so you have the highest sensitivity at that temperature.