I’m new to this whole motor selection thing and I find myself in need of 12V ~50 to 90 rpm motor and with an encoder for SLAM wheel odometry. I see options with “planetary” gears that are about CAD 80. That way over my budget.
So I pick these two based on budget and my seemingly simplistic requirement. But I am not able to decide which one of these is a good pick.
Now, Option A encoder says single channel 3 PPR(?) while Option B says 2-channel 12 PPR - Does that mean Option B is superior?
Option B says Planetary (self-locking?) while I did not see any gear description for Option A - Option B is good again?
The geometry of shaft and the head itself is different between A and B. I have noted that A requires 6mm hub while B requires 8mm hub. Besides this obvious difference, is the gear head geometry going to cause any problem with mounting them on Lynxmotion AWD1 v2 frame?
Hello @AdzTheDemon and welcome to the RobotShop community!
Since you mentioned you are new to “motor selection” I thought I should mention checking these guides/tools:
Now, Option A encoder says single channel 3 PPR(?) while Option B says 2-channel 12 PPR - Does that mean Option B is superior?
PPR means Pulses per Revolution which is related to the resolution, and as a higher value of pulses means higher resolution, yes, you could say the second option is superior.
Also, since you are looking for geared motors I’m going to assume you need high torque, so I thought I should mention that the second option also has a higher rated torque (15 kg.cm)
The geometry of shaft and the head itself is different between A and B. I have noted that A requires 6mm hub while B requires 8mm hub. Besides this obvious difference, is the gear head geometry going to cause any problem with mounting them on Lynxmotion AWD1 v2 frame?
The geometry and size of the shaft will only affect which hub you will need to make it compatible with the wheels.
However, as the link you shared is an upgrade kit, it doesn’t include the wheels, so the size of the shafts shouldn’t cause a problem. But you should check if the hole pattern is compatible with the one on the chassis side brackets.
The RB and RM codes are not related to the motors but to the vendor.
RM products are part of RobotShop’s Marketplace which means that even though they are featured on RobotShop’s website they are sold and fulfilled by a different seller.
If you want more information about the motors the supplier product code should give you more details, but keep in mind that these vary from manufacturer to manufacturer.
