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Spockie-Tech
Site Admin
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
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quote:
Originally posted by cj:
I have seen there is an Open Source Motor Control thing, it looks about the same price as the IBC, what's the consensus with that?
The OSMC has about 4x the current handling capability of the IBC, *but*, you need *two* of them, plus a uMOB controller, thats why they look more economical on first glance. Each OSMC controls only 1 motor channel, and the RC->PWM Convertor is a seperate board, which complicates the installation and wiring.
Indeed, the IBC is basically TWO OSMC's and the controller on a single board, except the H-Bridges only have 1 Fet per leg, instead of 4, which is fine for most featherweights, unless you are building a powerful rammer that needs high current 4WD drive motors, in which case the RS80 or SideWinder look more suitable.
quote:
The rules mention a higher weight allowance for walking robots, is that the case. I haven't seen any - are they too hard to build?
Its not hard to build something that *looks* like its walking, which is what causes all the trouble. People were forever coming up with the latest "disguised camshaft" technique and claiming the weight bonus, which was then used in other (weapons or armour) areas, so the rule makers made the walker rules so stringent that noone bothers.
Part of the reason is that legs offer no advantages over wheels on a flat floor anyway (Other than the look cool factor), and are significantly weaker when a 13Kg wheeled brick hits them at 20mph. Perhaps if we move to an off-road arena they might make a comeback. Until then, the wheel is king. _________________ Great minds discuss ideas. Average minds discuss events. Small minds discuss people
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Wed Apr 12, 2006 10:14 am |
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