Is it possible to use the mini hexapod with 3DOF legs? I know it may be a stupid question but Im looking to build a smaller hexapod with more movement
It should be possible!
You’ll need brackets to match, and the weight/torque ratio will be worse that the normal sized 'bots, but it could work. You might consider running the battery BB2 off board to reduce the weight.
Alan KM6VV
Well I plan to be using all hitec 485’s for the servos and why would it be worse exactly?
Im fairly new to robotics
OK, then you’re not using mini servos.
Alan KM6VV
So I wouldn’t need to worry about the ratio then?
What’s the size of the 'bot you’re planning? It’s hard to scale down the CH3R or whatever if you’re using full sized servos. When you said mini, I assumed you were using one of the smaller servos.
Alan KM6VV
its the mini hexapod kit, but i plan to use the 485’s instead of the 422’s which i believe are standard size
OK, you’re asking about the mini. Should work, if you can swing the 2DOF leg, then I’d think you’d be able to fit the 3DOF leg on as well. However, If you’re going to the effort of using 3DOF legs, then I’d opt for something like a CH3R.
Alan KM6VV
Well i dont really want something that size, thats why i asked about the mini hex, but thanks for your help
I think some of the metal geared, high torque mini servos out there nowadays can definitely support a 3DOF mini hexapod. The biggest factor of the weight has always been batteries…
I would highly suggest getting a BEC (switching power supply) with low-voltage cut-off and mate it to a 7.4V 2S LiPo.
I think even with the added weight of the BEC, it’s still will come out lighter than a 6-cell Sub-C pack…
Or you can do what I did and use a 5-cell AA NiMH pack. They are fairly lightweight and they are nominally 6.0V under load at full charge, which is what you want to feed the servos…