Matrix user forums

Hello Progers,
Any clues how i could use a biometric reader ? What input would i use ?
A search did not bring up anything.
I know i am being vague, something to throw around.

Regards,

Hello,

It really depends on the nature of the reader. If it is just a pure sensor then your probably looking at some type of analogue value you would need to read in using an analogue capable pin maybe going via an op-amp circuit to amplify the signal so it falls better in between VSS and VDD. Otherwise if the item is a more complete module then there may be some type of communications bus being utilized such as RS232, SPI or I2C.

Thanks Benj,
looking into the type of sensor .