CRich
USA
Asked
— Edited
I have decided to build a single wheeled bot and im keeping it simple, since this is my 1st build. No arms, no servos(other than for the wheel), and no body covers. So, it will be no wider than the ez-b board and no taller than a tire, servo, board, gyros, and battery pack. I'm going to use two futaba gy401 gyros, one I have already purchased. My issue is this: I'm unsure of how I will attach the gyros to the server and then to the board. I have a design in mind, but I'm not sure how to design the wiring. Any help is appreciated.
Oh, and I want to control the bot with a wimote.
Thanks
Like these wheels: http://www.vexrobotics.com/products/accessories/motion/276-1902.html
How many volts for the battery?
Do you think the ball inside the caster be roughly the same size as the wheels I use?
Or, maybe these wheels. http://www.parallax.com/tabid/768/ProductID/647/Default.aspx
With a 3/4" ball caster
I like the ones from parallax because theres smaller gaps between rollers. However the vex are cheaper because they come in a two pack...... just get the vex those will work. The battery is 7.4 volts which is what 2s means. Also one part I forgot is a regulator to keep voltage to the motors 6 volts so they dont over heat. 7.4 volts of constant use could overheat them. Members here regularly use step down converters and so do I. You need 2 one for each h bridge.
http://www.ebay.com/itm/DC-DC-Buck-Converter-Constant-Voltage-Voltmeter-Ampere-Meter-Greeen-LED-Display-/140873010255?pt=LH_DefaultDomain_0&hash=item20ccaf8c4f
By the way a racketball is way to small to fit your equipment on. How about a glowing ball? 8 inches is ideal for a small bot but enough room to fit the wheels and such. Also servocity.com sell abs plastic but honestly I would go to home depot and cut all this out of 1/4 inch ply. Its light cheap, and easy to cut and glue on.
Ah, ok. So the step downs will go b/t the H-bridge and motors?
I have access to a CO2 laser and plastic so I may cut it out of that.
Lemme gather some parts and I will revive this thread once I begin to build.
Oh, and a glow in the dark ball is a cool idea too!
What amperage range does the battery need to be?
A 20c battery or higher is fine. Nothing special. Also the step down converter is between batt and h bridges. It steps down input to the h bridge.
Alright take pictures. We love seeing projects. -Josh