Mechanics and Construction > Mechanics and Construction
servo motor or differential drive
anilg:
Hi,
Friends and myself are planning a robot car, and was wondering what the best method for control should be.
Our robot would end up weighing ~1.5Kg, and would be controlled by a lead acid 12v battery. What would be the recommended method for steering ?
The options I have are a 3 wheel robot (2 rear wheels controlled by a DC motor + 1 servo motor controlled steering) or a 4 wheel robot (the 2 on the left side controlled by one DC motor, the 2 on the right by another. Steering should be done by differential turning)
SmAsH:
you could make it like most rc cars see pic. but thats hard. i recommend diferential drive for it. its a lot easier to do and do you plan on putting in any sensors? making it autonomous? if so read up on the tutorials. and fell free to email me at [email protected] or pm me if you have further questions.
~smash
airman00:
differential is the easiest but what I would do is have two modified servos and one wheel on each side of the bot. Then one caster wheel for balance. Meaning, differential but with one wheel on each side
SmAsH:
lol thats like in one of the tutorials right?
~smash
anilg:
--- Quote from: airman00 on January 20, 2008, 12:06:04 AM ---differential is the easiest but what I would do is have two modified servos and one wheel on each side of the bot. Then one caster wheel for balance. Meaning, differential but with one wheel on each side
--- End quote ---
Is this design better than a tricycle like design with a motor controlling the backwheels and a servo controlling the caster? How so?
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