I have a question about the connection of coin slot to relay..
I
Is it better to connect the coin slot directly to microcontroller or should I connect it to relay before to microcontroller.

Coin slot:
red=Vcc
black=Gnd
white=counter
gray=coin

with these four wires, where should i connect the relay?,
once i inserted a coin (1 peso), i measure the output voltage, and it reads only 0.2V which cannot drive the relay..what should i do?.

any help is much appreciated..thank you in advance.!