Register To Comment
Page 5 of 8 FirstFirst ... 34567 ... LastLast
Results 41 to 50 of 72

Thread: Deathly Hallows - FW - Alligrater

  1. #41
    Ocracoke's Avatar
    Team Kaizen

    Status
    Online
    Name
    Michael
    Robots
    AW: Osu, Ikari, Ramu / BW: Shu! / FW: The Honey Badger / MW: Kaizen (Building)
    Location
    Somewhere on the Wirral
    Posts
    699
    I did something similar with The Honey Badger 2.2 where there was a sheet of Aluminium over a layer of HDPE. Had I bolted it down properly, it would probably still be with me but it seemed to hold up quite nicely against non-spinners.
    Team Kaizen

    AW: Osu, Ikari, Ramu
    BW: Shu! (Build Thread)
    FW: The Honey Badger (Build Thread)
    MW: Kaizen (Build Thread)

  2. #42
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Quote Originally Posted by Ocracoke View Post
    I did something similar with The Honey Badger 2.2 where there was a sheet of Aluminium over a layer of HDPE. Had I bolted it down properly, it would probably still be with me but it seemed to hold up quite nicely against non-spinners.
    Thanks may give this a go. Will have to think about best way to fix them.

  3. #43
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Having a bit of bother with the servo controlled linear - I took this from the BarrĂ³g thread

    [QUOTE=RogueTwoRobots;468452]On point number 2, the easiest way would just be to use a servo to turn on a couple of microswitches, one for each direction. It allows you to control forward and back from one radio channel and the stock actuator motor will have a low enough current draw to not require any additional relays etc. Here's a setup in its simplest form; I usually tend to just hot glue the switches onto the sides of the servo and wrap a cable tie around them, but you may prefer a more robust/maintainable/aesthetically pleasing alternative

    Attachment 6852[/QUOTE

    I assume I wired it wrong. But not sure how I identify the right terminals.

    15288312984111785818163.jpg

    My expectation was without either microswitch engaged it would be off. With one or the other polarity would be reversed.
    I possibly toasted them in the process of getting it wrong.

    The switch is a Z-15GW-B

    The pin nearest the rocker is 1 - COM
    Centre is 3 - NO
    Nearest switch extended arm 2 - NC

    Advice appreciated as my electrical know how is poor at best.

  4. #44
    Member

    Status
    Offline
    Name
    Paul Withers
    Location
    Leicester
    Posts
    21
    I think if you connect on each switch:
    pin 1 (COM) to the motor
    pin 3 (NO) to batt+
    pin2 (NC) to batt-

    I don't think you will have blown them up as long as you keep the motor connected across the 2 common pins, you should be ok.

    Let me know if this works, or if you want me to draw a circuit diagram.

    Paul

  5. #45
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    you're a genius! that works thanks very much

  6. #46
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Thanks to the help of Paul I got the linear control working. At least this mock up, which powered a small 12V motor. The idea is to make a sandwich with some polycarbonate as the bread and the microswitches as the filling. Conveniently the mini servo I am using is just the right height to align with the arms.
    IMG_20180616_141311.jpg
    IMG_20180616_141330.jpg

    I need some long 4mm bolts and some longer 1.5mm bolts, and in the final version the polycarbonate will shield the arms too. (Pictures updated with bolts fitted)
    Last edited by Deathly Hallows; 16th June 2018 at 16:02. Reason: Pictures not shown

  7. #47
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Got a few deliveries this week.
    Bolts, nuts, titanium plate, polycarbonate

    I am going to make the top mostly from polycarbonate as it's light, also it's cheap to replace so no big deal if destroyed after each event. I'll add reinforcement behind.

    Did a little more work on the electrical system. Configured the buck voltage reducer to put 18V to the lineac.
    Added a 'live' light, a 100A fuse for lipo and a kill switch/jumper

    I am making a polycarbonate lid for the bucky and adding a fan to be sure it can handle max load.

  8. #48
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Here's a video of my lineac controller working


  9. #49
    Member

    Status
    Offline
    Name
    Paul Withers
    Location
    Leicester
    Posts
    21
    Its looking really good I am excited to see it all together.

  10. #50
    Deathly Hallows's Avatar
    Roboteer

    Status
    Offline
    Name
    Simon Hallows
    Robots
    Beetleweight Evil K'Weevil Featherweight Alligrator concept
    Location
    Scotland
    Posts
    177
    Blog Entries
    12
    Quote Originally Posted by PaulusSmallus View Post
    Its looking really good I am excited to see it all together.
    Thanks very much.

    I added some titanium plate to the front instead of that bit cardboard . It weights in at 13.02kg so once the ramp is fitted it's going to be a bit over but lots of opportunities to lower weight.

    Having some electrical issues. Got it all wired up, motors spinning, lineac running, but something is not right.

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
  •