High Output sensors but a low input device.

Using Arduino Sensors
1

I have a few sensors which I am trying to use as switches. However, they all output a high when activated and the device I'm using works on an active low trigger.

I was thinking of using a transistor but I'm not sure if that's the best idea.

I need the high output to be seen as a low on the device and when the sensor is low then I need it to be seen as high on the device.

Any help is greatly appreciated.

2

If there is an Arduino somewhere in this, just change what level you are looking for. Or change the output to the opposite value.

Paul

3

johndoe72:
I have a few sensors which I am trying to use as switches. However, they all output a high when activated and the device I'm using works on an active low trigger.

I was thinking of using a transistor but I'm not sure if that's the best idea.

google "common-emitter inverter circuit"

I need the high output to be seen as a low on the device and when the sensor is low then I need it to be seen as high on the device.

Any help is greatly appreciated.