Hi, I have a small application but have close to zero circuit design experience. I want to fit two float switches to my boat's holding tanks, one for when it is about 3/4 full and when it is full. I had hoped that the switches I have bought would be normally open and closed when the levels are reached and power a couple of LEDs. However the switches I want to use don't do this, they start closed and will become open as the level rises!
Can anyone help me with this?
Ideally I would like to have the following, please note voltage is 12V,
When tank is empty that a green LED is lit (both switches closed).
When the first switch is opened the LED/second LED becomes orange.
When second switch is opened the LED/third LED becomes red.
It is important that the current required is as low possible.
Thanks, Simon
Can anyone help me with this?
Ideally I would like to have the following, please note voltage is 12V,
When tank is empty that a green LED is lit (both switches closed).
When the first switch is opened the LED/second LED becomes orange.
When second switch is opened the LED/third LED becomes red.
It is important that the current required is as low possible.
Thanks, Simon