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Thread: I'm looking to build a reliable featherweight but don't know where to start

  1. #11
    Hardox grades - 400, 450, 500 would be the more common grades. Any of these would be fine for chassis material. As to suppliers, put it into google and see who is closest to you.

    Colson wheels and hubs you will need to order from the US. Somewhere like Robotmarketplace.com. Nowhere supplies them this side of the pond.

  2. #12
    I can strongly recommend "K-cut" for your Hardox needs. They have a variety of thickness ex-stock and if you send them a DXF design of what you need they can watercut it for very reasonable prices. They also have a super fast turnaround (often only a day or two).

  3. #13
    Seconded, Ellis. Can confirm, one day shipping to me.

  4. #14

  5. #15
    You can use any LED you like, it just needs to have a suitable voltage dropping resistor in series with it. First, find the LED you want to use and look at it's specifications. You need to know the current and voltage of the LED, then you use an on-line calculator like this one: http://led.linear1.org/1led.wiz to calculate the resistor value.

  6. #16
    I'd suggest generic 12V LED strip or a Panel Mount 12V LED (you can find both at Maplins- http://goo.gl/dI4j03, or on Ebay- http://goo.gl/Xg6c6V http://goo.gl/yujLSJ ) - They will be slightly dim as they will be under volted but with a good long run of LED strip you can't really go wrong.
    Last edited by Eventorizon; 4th July 2016 at 09:18.

  7. #17

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  10. #20
    Hi,

    I built a test bed using the Extreme Robots how to make a featherweight video, originally the electronics were to the video’s specs, I’m currently adding the fuse holder, and LED so it complies to the build rules. At present I’m using the batteries that came with the drills (
    https://www.diy.com/departments/b-q-.../173942_BQ.prd), using the LED wizard that overkill suggested, I found the LED I chose (a 12v maplin chrome bezel yellow led) needed a 560ohm resistor.

    It may sound like a daft question, but if I was supplying the source voltage of the battery (12v) would the resistor be needed?

    Many thanks,

    Sam

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