Ran out of outputs

Community General Discussions
1

G'day.

I ran out of outputs for my servos on the picaxe 28 starter kit. Here https://www.robotshop.com/letsmakerobots/node/113 frits said he can use these:

  • Out c0
  • Out c1
  • Out c2
  • Out c3
  • Out c4
  • Out c5
  • Out c6
  • Out c7

    • as an output. However, I don't think you can use the servo command with it. Any suggestions? Is there is a way to connect two picaxe chips?

    Thanks.

    2

    plenty of options

    It is true, you cannot use all the available outputs on a 28x1 for servo signals. There are plenty of alternative ways to control more servos.

    servos sharing a signal line: if your application can bear it
    servo controller: dedicated chip/board that receive serial commands from the picaxe
    second picaxe: basically a custom made servo controller

    The different modes of communication between picaxes (i2c, rs232, pulse, PWM, voltage) have been discussed elsewhere on LMR. Use the search page.

    3

    Nice answer! :slight_smile:

    Nice answer! :slight_smile:

    4

    I say servo driver

    Runs from i2c line, 20+ servos it’s own servo power. All good. This is the way to go.