Help needed driving 16 remote (7 segment) LEDs

Discussion in 'The Projects Forum' started by rawlinm, Feb 26, 2010.

  1. rawlinm

    Thread Starter New Member

    Feb 24, 2010

    I have a circuit that has several counters which drive 2 displays, made up of 10 x '7 segment LEDs' in total. (4 LEDs are multiplexed and the other 6 are driven directly).

    My problem is that I need to duplicate the display on a remote console in another room. So I need to drive 10 '7 segment displays' remotely using the minimum of wiring. The distance involved is about 20 metres.

    I have thought about using a PIC, driving a MAX6955 but I think this is beyond my ability. I am more familiar with logic ic's.

    Does anybody know how I could approach collecting the data from multiple counters and send it using the minimum of wiring?

  2. russ_hensel

    Distinguished Member

    Jan 11, 2009
    I would use a uc at the far end and use just 2 wires to send an rs232 ( or variant ) over the wires to control the remote display. I have no idea of an easy way to do this with as few wires and just logic chips. I assume you have a uc at the near end as well.