- #1
Darendor
- 7
- 0
Hello, I've been trying to figure out how to design a control circuit for a project of mine with no success. I could use a little guidance.
The proposed circuit is a board powered by a simple 9V battery. It will have a temperature probe connected to it. The circuit is supposed to close and open a 12VDC connection (i.e. wire from the negative terminal of a car battery) based on the temperature, thus:
- close the circuit if temperature is equal to or less than -19 degrees Celcius
- open the circuit if temperature is greater than -15 degrees Celcius
The board will have a simple SPST on/off switch. It will also (when on) measure the car battery's voltage and display it in a digital readout and also display the temperature probe's reading.
Finally, there will be a green lamp blinking when the circuit is closed, and a red lamp on solid if the car battery voltate is 5VDC or less.
I was wondering if anyone would be willing to help me out in getting this thing started?
Thanks for your time.
The proposed circuit is a board powered by a simple 9V battery. It will have a temperature probe connected to it. The circuit is supposed to close and open a 12VDC connection (i.e. wire from the negative terminal of a car battery) based on the temperature, thus:
- close the circuit if temperature is equal to or less than -19 degrees Celcius
- open the circuit if temperature is greater than -15 degrees Celcius
The board will have a simple SPST on/off switch. It will also (when on) measure the car battery's voltage and display it in a digital readout and also display the temperature probe's reading.
Finally, there will be a green lamp blinking when the circuit is closed, and a red lamp on solid if the car battery voltate is 5VDC or less.
I was wondering if anyone would be willing to help me out in getting this thing started?
Thanks for your time.