looking for low friction slip rings for an anemometer?

Other Hardware Robotics
1

Dear all,

A sensor is mounted on a wind turbine. The wires of this sensor need to be connected to the Arduino UNO board.

Since the wind turbine spins, sensor wires need a low friction slip ring.

I got some slip rings from adafruit, but the torque is too large. I even can feel the significant friction when I spin the slip ring using my hands.

Anyone know where I can purchase high quality miniature slip rings with a low friction (<0.03 N.m)?

Thanks for your help.

2

How many contacts? 2,3,4,6?

3

I attached a I2C 9-DOF sensor on the wind turbine which requires 4 contacts to MCU. Any comments?

Thanks a lot.