Project
I would like to identify the state of 3 switches, sw 1, 2 & 3 and when power is supplied to a fan …… so 4 indicators – assume these would be LED. I.1 – I.4
Sketch is attached.
The controller is self-contained controller providing Bluetooth, Wireless, time & temperature functions, thermocouple inputs etc .. they all work, providing the 2 ‘conditional’ inputs are satisfied. Then providing variable voltage supply to the fan.
Input 1 – is satisfied when switch one is closed, this is a simple 12V DC cct
Input 2 - is satisfied when Switch 2 & 3 are closed
The output voltage is then provided to the fan, this is a variable voltage from 0 to 12V DC
What I want to ‘add’ are 4 indicators, showing state of each switch, and when there is any power to the fan.
So I would need a way of identifying any voltage present and changing to an on or off ‘switch indication’
Trying to think of an easy way …. I could use a voltage comparator to detect a difference between fan driver voltage & ground, but as there are 2 switches as well …. Assume then its 3 comparators, so getting complicated.
The ‘comparator modules’ are an option https://tinyurl.com/54e89cp6
Hopefully, someone can come up with something simpler than 3 of these.
The switches are spst plungers, with no option to change them to give another set of contacts.
Does anybody have any suggestions, the simpler the better - I have no Arduino skills … just need a few thoughts to start me off
I would like to identify the state of 3 switches, sw 1, 2 & 3 and when power is supplied to a fan …… so 4 indicators – assume these would be LED. I.1 – I.4
Sketch is attached.
The controller is self-contained controller providing Bluetooth, Wireless, time & temperature functions, thermocouple inputs etc .. they all work, providing the 2 ‘conditional’ inputs are satisfied. Then providing variable voltage supply to the fan.
Input 1 – is satisfied when switch one is closed, this is a simple 12V DC cct
Input 2 - is satisfied when Switch 2 & 3 are closed
The output voltage is then provided to the fan, this is a variable voltage from 0 to 12V DC
What I want to ‘add’ are 4 indicators, showing state of each switch, and when there is any power to the fan.
So I would need a way of identifying any voltage present and changing to an on or off ‘switch indication’
Trying to think of an easy way …. I could use a voltage comparator to detect a difference between fan driver voltage & ground, but as there are 2 switches as well …. Assume then its 3 comparators, so getting complicated.
The ‘comparator modules’ are an option https://tinyurl.com/54e89cp6
Hopefully, someone can come up with something simpler than 3 of these.
The switches are spst plungers, with no option to change them to give another set of contacts.
Does anybody have any suggestions, the simpler the better - I have no Arduino skills … just need a few thoughts to start me off