Thingiverse
9g servo differential steering
door joelttyjoel
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Video of it being used to steer a rc "rover".
This little thing will let you create differential steering on two brushed dc motors using the output of a 9g servo. I needed this for a rc tank which in other cases needs fancy electronics or arduino programming to create the steering effect.
CARBON BRUSH VERSION ADDED(cheap ones from ebay) since I've had problems with the wire that was used before. If you are using wire as the brush, make sure it has good contact with the rail aka push it through the spinnie holder thing quite a bit.
I recommend using the carbon brush version since it has been more reliable for me. Things to note is that there seams to be alot of ressistance in the brushes. The motors run at the same rpm as before but now on a 3s versus the previous 2s.
UPDATE WAITING TO HAPPEN. I need to redesign how the housing for the carbon brushes attaches to the servo. It is currently attached as if the housing was a servo horn but this has failed for me. I need to
This little thing will let you create differential steering on two brushed dc motors using the output of a 9g servo. I needed this for a rc tank which in other cases needs fancy electronics or arduino programming to create the steering effect.
CARBON BRUSH VERSION ADDED(cheap ones from ebay) since I've had problems with the wire that was used before. If you are using wire as the brush, make sure it has good contact with the rail aka push it through the spinnie holder thing quite a bit.
I recommend using the carbon brush version since it has been more reliable for me. Things to note is that there seams to be alot of ressistance in the brushes. The motors run at the same rpm as before but now on a 3s versus the previous 2s.
UPDATE WAITING TO HAPPEN. I need to redesign how the housing for the carbon brushes attaches to the servo. It is currently attached as if the housing was a servo horn but this has failed for me. I need to
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