What motor controller should I use with the 6WD Wild Thumper platform?
I bought the 2.5 amp H-bridge board but obviously that's is not going to cut it!
There is a dedicated controller board (https://www.sparkfun.com/products/11057) but not sure how one would connect it to ez-robot board?
Has anyone else connect one of these to the ez-robot platform?
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So just want to check your last point DJ. You are saying that:
1) Each motor should be connected to an individual H-bridge
2) The PWM inputs for the 3 H-bridges for the motors on each side of the Thumper should be connected in parallel and then connected to the EZ-Robot PWM output so that they can be controlled in parallel by the hbridge motor control panel on ARC
Is that right?
The Dagu Wild Thumper chassis come with motors pre-wired for paralleled use (per side of course :)) And as long as the drive controller is rated (safety wise) for the total stall capacity of all parallel wired motors then all is good! I.e. three 7.2v DC motors, each rated for 6.6A at stall (well over the 2.5A of the recommended controller) will only ever draw 7.2v and total of 20A (assuming ALL stall out simultaneously, more if rapidly changing directions). If just one stalls or is "off" then the remaining two still only draw 7.2v and whatever current they need.
There is no practical need to have separate controllers... I agree that it technically can be done... but, for a new robotics builder, suggesting such actually complicates things not simplifying them.
I do however totally agree with @DJ that wiring drive motors in series is just asking for trouble A change in one WILL affect all others, usually to the negative.
Illustration .. woops I thought I posted it ill get that tommorow for you.
Out of interest, what controller would you recommend for the Wild Thumper 6WD
The One I listed originally is obviously a complete robotics controller in it's own right and so a bit pointless to try and use that with the EZ-Robot controller
Are there any dumb controllers (rated at 20amps for each side) that you have come across that would interface well with the EZ-Robot controller?
DJ, if the l298n is going to throttle the motors at 2.5 amps, surely that's not going to work terribly well is it?
I will give the l298ns a go then
Noob trying to connect the 6 wheel thumper this weekend