Hello Guys my Self Mohanish From India and i'm also an Mechanical Engineer and working as a Designer. i would like to know that how to make robots? frankly speak i'm totally unaware about it. i was try searching on Google but cant find anything what i required. on Google i was find this site and its look like what i required
I need to know how robot works?
I need to know which parts are Required for making 4 wheel Drive Robot with operated with Laptop or remote control
I need to know what parts do what things.
i need to know from where i get that all parts.
i need to know how to assembled all that parts electrically and mechanically both
All of u r requested to shear your knowledge with me
here i'm attach 2 Photos which i was make in 3D
By mohanish
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If you use DC Motors you may want independent control of each 1 of them. This is because each motor will turn at different speeds using the same voltage. Richard's suggestion of using A sabertooth is still the best way to go in my opinion. However a Sabertooth will only control 2 motors at a time. I do believe that they can chained together and you would still only have to use 1 port on the EZB. Sabertooth has a smaller board that will handle only up to 5 amps and is less expensive. If each of your motors are pulling less than 5 amps than you can save money by using a 2X5 Sabertooth.
@Dave... That's incorrect Dave.... I have used a 2 x 12 sabertooth no problem with a dagu Wild Thumper and it has six motors... you just parallel the left side motors to one channel and parallel the right side motors on the right channel..... tank steering.... The sabertooth will drive more than one motor per channel provided the motors are wired in parallel and don't exceed the 12amp rating per channel
@Richard, No what I say is not incorrect. I never said you couldn't do what you suggest and my input was intended as a suggestion and as useful information. I just said that each motor will turn at a different speed with the same voltage and gave an alternative method.
What I should have said is each motor will turn at a "Slightly" different speed. In some cases this may be imperceptible but if you need precision then you need to be able to set each motor's speed differently.
However now that I'm thinking this through, you may be correct in that in a "Tank" style movement of wiring each side in tandem is probably is the way to go. I've never built a 6 wheel drive so I was erroring on the side of precision. I have a short coming of overbuilding at times.
Still, I'd suggest doing a little math and if your going to hook three motors up to one side and they will pull less than 5 amps I'd still save some money and get the 2x5 Sabertooth.
One more thing. If you use continuous (modified) servos instead of DC motors you will not need a motor controller. You can just plug a servo into EZB and it will work with ARC. Just be sure the servo is rated for the same voltage your supplying the EZB. The power output pin on the EZB will deliver the same voltage to your servo that you power the EZB with. You can get around this by supplying the EZB with the same voltage your servo expects (as long as it's within EZB's voltage requirements) or using a power regulator after the servo plug.
I want to run 4 steppers. Can I use a Sabertooth and can I run more than one stepper with a single Sabertooth?
Ok Dave... gotcha... understand now.... If the bot is not tracking straight, you can always slow or speed up any channel by adjusting the serial commands accordingly... I only suggested the sabertooth because 3 L298s would tie up a lot of ports on the ezb...
@bookmarked32... wouldn't you need a motor controler that works with stepper motors? Steppers are a whole different animal than a geared DC motor (which is what a sabertooth was designed for)... Not sure if a sabertooth would drive a stepper....
Me either, that is why I am asking. If I go with 4 duel H bridges there goes all the digital ports.