Register To Comment
Results 1 to 4 of 4

Thread: Antweight dasmikro/ vex 29 help

  1. #1
    Trying to enter my first ant competition this Saturday, have a few questions.

    I have one ant that uses the vex 29 esc's, they unfortunately dont have braking, ive heard that with dasmikros, you can use 50ohm resistors across the terminals of the motors, is this something that would work with the vex 29's?

    With the dasmikro, im just super confused about how it all comes together, theres six terminals but eight wires going into it?? Ive seen on a circuit diagram that you only take the orange wire(??) from one group, if this is true what happens to the rest.

    51185549_298439430708479_2263416184097472512_n.jpg

    Pretty new to this so just a bit confused lol, thanks to anyone that can help

  2. #2
    Ocracoke's Avatar
    Team Kaizen

    Status
    Offline
    Name
    Lucy
    Robots
    AW: Amai, Ikari, Osu, Ramu / BW: Azriel, Shu! / FW: The Honey Badger / MW: Jibril
    Location
    Somewhere on the Wirral
    Posts
    815
    Hey there, welcome to the forum! I assume by this Saturday, you mean Ant Freeze? If so, I'll be there.

    I have one ant that uses the vex 29 esc's, they unfortunately dont have braking, ive heard that with dasmikros, you can use 50ohm resistors across the terminals of the motors, is this something that would work with the vex 29's?
    I can't answer precisely this as I don't use VEX 29s myself but I thought the resistor across the motor terminals was for something else relating to how much starting current was being used (ref: http://www.hilkar.com/motorstartinga...resistors.html). I therefore can't see why you would need it for this application, especially in this weight class.

    With the dasmikro, im just super confused about how it all comes together, theres six terminals but eight wires going into it?? Ive seen on a circuit diagram that you only take the orange wire(??) from one group, if this is true what happens to the rest.
    Again, I don't use a DasMikro so I wouldn't take this as correct but for the 6 pads, you only need one of the RX leads (the 3 wire connections) fully wired in to be able to turn on the receiver (with the battery connection going into the DasMikro where you've it now I think though check the polarity first). The other RX lead you would only solder in the orange (the signal) wire in to be able to get the other range of movement.

    So if the first orange lead (that was fully wired in) did forwards and backwards across the two motors connected, the other orange lead would control left and right movement. You would simply cut out the positive and negative wires in that case.

    Here is an example of what I mean: https://www.flickr.com/photos/spatuluk/39931157642
    Last edited by Ocracoke; 31st January 2019 at 15:02.
    Team Kaizen - Build Diary for all the robots

    AW: Amai, Ikari, Osu, Ramu
    BW: Azriel, Shu!
    FW: The Honey Badger
    MW: Jibril

  3. #3
    voorsk's Avatar
    Roboteer

    Status
    Offline
    Name
    Graham
    Robots
    AW: Suspicious Houmous, Sprouting Potato, Fermented Melon
    Location
    Stockport, UK
    Posts
    26
    ooh - I recognize the impressive soldering skill demonstrated in that photo (it's mine!).

    Ocracoke is spot on. The RX power rails are shared, so you only ever need to supply power once, then the rest just need signals. You just cut off the power wires of the channels that don't need them.

    I dunno about using resistor braking - I don't like the thought of things getting hot, so I never tried it. I know what you mean, though - that thing where you attach a resistor to bring the motor to a faster stop once voltage is removed, or something like that. I'm at work, so my google-fu is weak.

  4. #4
    Thanks for the tips man, see you at ant freeze

Register To Comment

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •