Question

R1 R2 100Ω 100Ω LM358N V1 R3 R4 100Ω 174Ω V5 LM358N

op amp LM358N is used. This device is actually temperature measurement. Instead of resistor of 174Ohms, it should be a RTD or PT100, but I don't have in the lab right now, so this is simulation. With this resistance, temperature should be around 188-189 Celsius. I hope this part is clear. In the lab, for different temperatures I will put different resistor, 190 Ohms, 280 Ohms etc. Output of the amplifiers should be connected to pins A0 and A1 on Arduino Mega board. The task is for different resistance to get appropriate temperature, according the table (in this case, table for pt100 is used).5 volts are coming from Arduino, and that 5 volts are connect to the power supply of the bridge, and also for the amplifier.Ground is going on Arduino too. I don't know how to code this circuit in Arduino. If you can help, it will be good. Thank you.

Answer 1

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