Hi everyone
I'm new to the forum and on my first PIC project. I have built my own JDM2 programmer and test board. I have tried searching the forum but so far I haven't found an answer to my problem.

I am building a telescope drive and I want to interface a Honeywell HOA2001 optical encoder to a 16F84. I want to drive Rb0/INT from the TTL output of the encoder so I can generate an edge triggered interrupt when the path is clear.

When I connect the two directly RB0 does not rise above 1.6V and the interrupt is neve triggered. If I disconnec the output of the encoder is changing between 0 and 5v

Does anyone have any experience of doing this or a schematic I could look at?

Thanks
Scopit