The motors on this look interesting
Martin_H
Posts: 4,051
Take a look at this ebay item:
http://www.ebay.com/itm/4WD-Robot-Car-Chassis-Platform-in-finished-condition-compatible-with-Arduino-/320962092205?pt=Model_Kit_US&hash=item4abad4dcad
Ignoring the acrylic chassis for a moment, what I find interesting are the DC motors. They look a bit like RC servos with a center output shaft and no control electronics. Most of these China robot items are put together using off the shelf gear motors and wheels, but I've never seen motors like these before. They actually look pretty handy as they have built in mounting brackets.
http://www.ebay.com/itm/4WD-Robot-Car-Chassis-Platform-in-finished-condition-compatible-with-Arduino-/320962092205?pt=Model_Kit_US&hash=item4abad4dcad
Ignoring the acrylic chassis for a moment, what I find interesting are the DC motors. They look a bit like RC servos with a center output shaft and no control electronics. Most of these China robot items are put together using off the shelf gear motors and wheels, but I've never seen motors like these before. They actually look pretty handy as they have built in mounting brackets.
Comments
The DC motor of the chassis run 210rpm at 5V
that's way too fast and undergeared, like a Magician chassis.
I don't think so, it looks like the output shaft is in the center of the casing.
The wheels look to be about 50mm in diameter - which would make 210 rpm equal to a little less than two feet per second. Seems okay to me, especially since there are four motors.
But that's just me...!
Update this one is funny as they forgot to remove the paper on the acrylic.
http://www.ebay.com/itm/4WD-Robot-Car-Chassis-Android-Phone-Control-by-Arduinos-IDE-Motor-Bluetooth-/360482488009?pt=LH_DefaultDomain_0&hash=item53ee6e3ec9
So my bot is going to run at 240 rpm max with 4 inch wheels, that works out to 4.16 feet/per second, Is this going to be to fast to do anything accurately? Obviously im not going to accurately be using ping sensors at full speed, but I figured that Id at least be able to do accurate work with the wheel encoders/compass and maybe wiicam/lasers (as wiimotes are moved pretty quick when used properly)...
What kind of accuracy issues do higher speeds face
It's a Solarbotics kit, so you can see their video: