3
votes
1answer
360 views

PID implementation for a Humidity controller

I'm working on a humidity controller which uses PID algorithm to control the process values. I have to implement 2 PID routines as there are 2 process values ( Humidity and Temperature) to be ...
2
votes
1answer
746 views

Converting an ADC value to equivalent Temperature?

I'm working on a humidity controller which also controls the temperature inside a chamber.I'm done with the hardware (though i'm not the one behind the design)and which was originally designed with ...
5
votes
4answers
261 views

Temperature sensor recommendation

I am builing a homemade reflow oven, but I cant find a good and cheap temperature sensor that can survive the temperatures necessary for reflow (~250ºC or 482ºF). Does anyone have a recommendation? I ...
4
votes
3answers
670 views

How can I find temperature of microcontroller?

In some boards which environment temperature goes up could cause high temperature in micro controller. This will effect on micro and bad situation maybe occurs. For example I have designed a device ...
1
vote
1answer
559 views

pH sensor with DS18B20 temp compensation on PIC

I am trying to build a circuit that interfaces a standard pH electrode to a PIC (18F4550). I need the PIC to also use a DS18B20 for temp reading and use that data to correct the pH reading. I ...
4
votes
2answers
2k views

I2C - Cannot read temperature from TC74 with PIC16F887

The question was: I want to read temperature from TC74 using I2C module of PIC16F887, however, in Proteus simulation, I see noises in I2C Debugger Tool's output. ...
6
votes
4answers
3k views

Reading RTD Temperature Sensor

I've had a number of issues getting good stable analog readings from an RTD temperature sensor. The temperature readings have a tendency to bounce as much as +/- 5 Deg C. The circuit is very basic, a ...