I'm new to arduino and would therefore like some help to choose the right components, software etc. for getting started with a small project i have in mind.
Comming from the industrial automation branche, i have worked a lot with programming of PLC's and HMI panels, but this project is so simple that implementing a PLC would be overkill in my opinion. Besides, i suspect that the Arduino will be able to to excatly the some job as the PLC for 1/10th of the price..... And it looks more fun.
So here's what i need on the control board:
12 V DC supply. I will have 12 V DC available in the control cabinet already. Is it possible to power up an arduino with 12 V?
2 temperature sensor inputs. Preferably for the input signal of PT100 sensors as these are eaisliy available in the form of a stainless steel cartridge with a silicone cable firmly attached to it (mechanically strong).
2 digital outputs for controlling external solid state relays intended for driving two Peltier thermoelectric coolers.
A nice illustrative touch screen of some kind, able to show a temperature curve according to the input of the two temperature sensor inputs. I believe Arduino has got allready available touch screens in sizes of 2,4" and 3,6", correct? Otherwise, a tablet could perhaps be used by connecting via WiFi to the arduino??
Software for aduino and screen, programming cables, connections between screen and main bord etc. All the other stuff for making thing work. What will i need?
The point in this project is to make an accurate temperature controller. A Peltier is cooling down a subject. A temperaturesensor is monitoring the actual temperature at the subject. Once the subject has reached the desired setpoint (chosen by the operator on the screen), the peltier will turn of. Working either as a simple thermostat or a more complex PID controller, the arduino should be able to hold the subject at a given temperature and show the actual temperature in degrees C on the screen together with the desired setpoint which can be altered on the screen. The second temperature sensor will be used for drawing af curve of the change in temperature during time in another subject.