New lower price for Axon II ($78) and Axon Mote ($58).
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First things first. I've never built a robot before and doing a google search yielded this forum. I have a B.S. in Physics but that doesn't necessarily translate to being helpful with robotics, except for being able to think outside the box and do math.
As the title says I want to build a beginning robot. I want to make a 6 wheeled robot
I'm looking at making a 6x12" robot [...]6 Wheels6" diameter wheels
I realize with bigger tires you can't carry as big a load
1. Where do I start to estimate: Weight, Voltage, Torque, Acceleration, Gear Ratios, etc etc? Most say to guess but this isn't good enough for me. I need formulas or some way of estimating. I want to avoid over weighting the first robot so cruising velocity can be drastically reduced, since this will mainly be tied to dc motor weight x6, for fundamentals and functionality.
2. What is the recommended dc motor for robots? I'm thinking brushless design, as stated above, but in reading up on them they need a special controller. I'm thinking High torque as I want the robot to be fast.
3. Recommended chassis material? I was thinking plate aluminum as it's light but a plastic would work as well. It needs to be able to hold up to a beating as it will be tested outside and plastics can be rigid and crack under the strain of a vehicle not having a suspension.
4. Recommended voltage? I'm Thinking 24V as I'm looking at a 6-12V Motorx6
5. If a brushless motor is used what micro controller is recommended?
Ahemm... In my experience, the more schooling => the more inside the box - it's the untrained, who doesn't know there is a box in the first place, that transgresses the walls
Wrong. Tire size (diameter) has nothing to do with that.You need to view the transmission as a whole, from the rotor of the motor to the tire on the ground.Wheel diameter only changes the needed gear ratio.
As mentioned, plenty of tut's here, but B.S. or not, this is the real world, so prepare to hone your guesstimating skills. (Or does the B.S. just stand for what it usually does Tongue Cheesy)
I'm confused. You have mentioned up to 36V (which IMO is way beyond sensible with NiMH).Just hits me... You need to study basic electronics - 3 separate 6V motors takes... 6V to run...I have a feeling you added their voltages to 18V?Go with max. 12V for starters.
If you, in reality, just want to make a ROV (a glorified R/C car) rather than a robot, you don't need a micro controller at all - just build it like any other R/C vehicle.
You want it to be very fast, but speed doesn't really matter
Started by Link
Started by Hassan
Started by robotic_beginner
Started by notgiven
Mechanics and Construction