by trev502000, published
Everything has been designed to be printed on a standard print bed.
Pictures will be added as soon as the servos decide to turn up .
remember I have made this for you to make so don't be afraid to ask for changes Constructive criticism very welcome (but don't abuse it)
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The Spider Controller will handle 48 standard servos as well. You just can't POWER them all from the board. If you connect the servos to a separate power source, and the signal line to the Spider Controller, you will be fine. As was mentioned already, keep on eye on the current required to supply to all the servos and plan accordingly. A couple/few UBECs should do it depending on how many legs you are going for (look for the ones that can switch to 6v to get the most power to your servos). I'll leave a link to more information, you can catch the designer here from time to time if you have more questions about it. :) http://letsmakerobots.com/node...
Hey there, just thought I'd clarify some stuff about that board. The reason that it says 48 micro servos is because it has a 3A MAX current limit on the board. I'm not sure what the stall current is on your Tower Pro's, but most standard sized servos have a stall current of about 1-1.5A. This means that if say, the first two legs got stuck and drew 2 amps, plus the current of the other servos, it could break your board. The SSC-32 is rated for 30A and is more than capable. If you are looking for a slightly cheaper board that can be daisy-chained easily, you might want to check out the Pololu Mini-Maestro's. They have a nifty computer application for controlling them too.
Also, nice project! I really wish I had a 3D printer so I could try it!
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1. the feet are made up of 5 sections each 2x foot sides, 1x foot support short, 1 foot support long and 1x toe look at the foot picture for guidance. my plan was to use an m2 tap and m2x8 countersunk screws to make it look nice and neat but you can use self tappers you may need to drill the holes a bit bigger to avoid splitting. im planning on using the toes with pressure sensors mounted in the feet to allow it to feel but for now it will be fixed.
2. the Femur/legs made up of 3 parts 1x leg and 2x pin there may be another part to the pin soon a sort of cap that screws on just need servos to turn up to make sure sizes are right i may even get rid of the pin a print the leg as one piece the pins fix onto the leg in-line with the servo horn to act as a pivot see the leg assembled picture.
OK got to go to work now will finish this later
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