9 digit pulse counter

At roughly $20 to build, this 9 digit pulse counter is an excellent example of home built tools. The builder, [Josh] found himself repairing a device and in need of a pulse counter. With the components cheaply available, he just built his own. He says that it has a few limitations, like display brightness, but overall it seems to do the job well. You can download the PCB from his site.

[via MakeZine]

11 thoughts on “9 digit pulse counter

  1. @Erik,
    if you want a hack take a $2.00 calculator and a couple components and make a 9 digit counter on the cheap.done that back in the 70’s with a high end HP cal.Basically using a transistor to pulse the + and 1 keys.

  2. Pedometers can be found at most Dollar stores.
    substitute the pendulum switch for the input pulse,
    and you have a real cheap counter with an LCD display. But it will probably be limited to 1ppsor so.

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