You appear to have the emitter and collector of each opto output reversed. icabjeff wrote: > Here is a more detailed image. I'm using a ISOCOM - ISP321-4X - OPTOCOUPLER, > DIP-16, QUAD, TR > http://www.farnell.com/datasheets/90976.pdf > http://www.farnell.com/datasheets/90976.pdf > http://www.nabble.com/file/p25249957/PICtoI-PAC.jpeg > Jeff > > On Mon, 31 Aug 2009 09:57:33 -0700 (PDT), "icabjeff" > said: > >> I'm connecting the PIC output from a >> 9pin >> out port on the e block mulprogrammer though a quad opto-coupler to an >> I-PAC >> keyboard encoder. >> -- ___________________________________________ David Duffy Audio Visual Devices P/L Unit 8, 10 Hook St, Capalaba 4157 Australia Ph: +61 7 38235717 Fax: +61 7 38234717 Our Web Site: www.audiovisualdevices.com.au ___________________________________________ -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist