Vref and Servo Problem

Home Evil Mad Scientist Forums Egg-Bot Vref and Servo Problem

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
  • #20185

    Hi, yesterday i got my Eggbot board ( exactly this one : http://www.watterott.com/de/EiBotBoard ).
    The firmware update etc worked fine but when i try to adjust the vref of the the stepper drivers I realised that in every position of the poti, vref stays at ~2V (measured on ground  and the vref pad near to the poti). Driving the steppers with this config heatens the motors and the drivers too much :( Is there a design error in the version of the board?!

    My second problem is the servo which isn’t working. Sending a command to move it lets the servo make noise but it doesnt move…

    Can anyone help me please ?

    Thx in advance

    Windell Oskay

    First, be sure that you’re measuring this voltage at test point TP3.   

    While I don’t think that there’s a design error, it sounds like you may have received a board with a bad pot or some other kind of fabrication error.     You should probably contact the store where you bought it, to arrange for an exchange.
Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.