- October 10, 2018 at 7:44 am #5829
I’m working in a university project in which we need to move a 40-50 lb payload with an accuracy of +-1 cm (0,4 inches). The dimensions of the chassis are very similar to the default ig52 4wd all terrain robot (https://www.superdroidrobots.com/shop/item.aspx/ig52-sb4-t-4wd-all-terrain-robot-with-custom-length/1259/), but I don’t have the knowledge to choose the right motors or batteries for this configuration. The wheels we are using are 19,5cms (7,7in) in diameter and it will be used only indoors. In this project we’d like to use ROS to manage the robot, so it would be a plus if the motors could be controlled through that interface. If you could give me a recommendation of motors and batteries of the ones you display on your custom robot page, or some other products you think would be optimal for this configuration I would be very grateful.
Thanks in advance.October 10, 2018 at 9:52 am #5830
Hi Rafael, if you have the budget and space for it, I would go with IG52 motors. You could get away with using low RPM IG42 motors (78 RPM or slower) but they probably won’t last as long s the IG52’s will. As for batteries, it really depends on how much runtime you want. We often use qty. 2 12V 8Ah lead acid batteries in series with our IG42 robots and qty. 2 12V 18Ah lead acid batteries in series with our IG52 robots. Runtime depends on use but on average is maybe 2-3 hours with these setups. Pretty much any single board computer (like Raspberry Pi) will support ROS. We don’t actually sell any of these though. You’ll also need a motor controller. If you are reading encoders and running autonomous routines I would recommend a Roboteq. See links to all recommended products below. Thanks.
https://www.superdroidrobots.com/shop/item.aspx/roboteq-sdc2160-2x20a-60v-motor-controller-with-encoder-input/1826/October 10, 2018 at 9:57 am #5831
Thanks a lot for your fast answer, I’ll definitely check those products to see which ones we could afford.
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