My Project

Other Hardware LEDs and Multiplexing
1

Hi, I have to do project but I can not handle it. It should be quasi control heating system.
So I need to do this: The furnace temperature gradually increases. There are 3 radiators in the circuit. When is temperature at 20°C radiator doesn't heat
When is temperature at 25°C first radiator is heating but radiator 2 and 3 are shut.
When is temperature ať 28°C the second radiator heats too and the third is shut.
When the temperature is 35°C all radiators are turn on.
This applies also in reducing temperature.

Basically, I need to turn on first led at number 20 but I don't know how to do it or write it in the programme. Also the other leds. And I dont even have a scheme.

Tools: Arduino Uno, Solderless Breadboard, LCD keypad shield

Can you help me please?

Thanks for answers

2

So this isn't a real heating system, it's just a model using leds to represent the radiators? How do you want to represent the boiler temperature? You could just use a pot (10K). Or a temp sensor of some kind, such as ds18b20 (digital) or lm35 (analog). You will need a series resistor for each led (220R or 330R).

3

Yes it is just a scheme as you said. As a boiler I would use LCD Keyboard Shield or Arduino (not sure). I found series resistors (330R). Also I have digital display for temperature. Now I don't know how to connect the circuit.

4

It will be easier and more meaningful if you can find a pot or thermistor to represent the temperature.