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Having only played with simple breadboard stuff years ago, could someone explain how the wiring works when connecting to something that's spinning? edit: found
by albemuth 9y ago
Having only played with simple breadboard stuff years ago, could someone explain how the wiring works when connecting to something that's spinning?
edit: found it in case anyone was curious: https://en.wikipedia.org/wiki/Slip_ring https://en.wikipedia.org/wiki/Slip_ring
- flyingcircus3 9y agoThey use a slipring. In some ways, its kind of ironic, because these are now most prevalent in brushless DC motors. Slip rings work in the same fashion as brushed motors. To achieve continuous rotation in a brushed motor, there are carbon brushes that are closing different circuits as the rotor spins. This allows the phase of the electricity to stay constantly ahead of the phase of the motor, giving it its acceleration. In a brushless DC motor, this same effect is achieved through a feedback loop, obviating the need for the brushes, which wear over time, and leave carbon deposits. https://www.sparkfun.com/products/13064 https://www.sparkfun.com/products/13064
- gugagore 9y agoanother option, if your power and signals aren't too low frequency: https://en.wikipedia.org/wiki/Rotary_transformer https://en.wikipedia.org/wiki/Rotary_transformer
- amelius 9y agoIt's basically how an electric train does it.
- taneq 9y agoSlip rings are noisy and wear out. A lot of scanning LIDAR systems use a rotating mirror with stationary electronics to avoid them. You could also use stationary magnets with coils on the rotating part to transmit power (basically a mini-alternator on the spinning side), and IrDA or something to communicate.
- dbcurtis 9y agoExactly what the Neato 2nd gen does. Coils for power and IrDA for data.