Hi,
I am curious about the power source wiring from power supplies. Did you all use a calculation based on your ideal wire length to arrive at the 1mm^2 wire gauge? Also, were there any issues with the XT30 connectors (I’m thinking of implementing XT60s instead)? Why did you all use 0.5mm^2 wires on the consumer side (directly attached to the MicroDrivers)? Lastly, are you all using a fuse with the power supply method?
Hi Emilia,
the supply wires were sized pretty generously to keep the voltage drop low.
Our supply wire length is around 5m - the resistance of the wire is only around 90mΩ.
We haven’t seen any issues with the XT30 connectors or the wire sizes.
We don’t use any fuses - we have an e-stop switch on the supply wire.
Are you building a 12dof quadruped?
You might have trouble fitting the XT60 connectors - there is not a lot of free space inside of the robot.
We are using the smaller 0.5mm^2 wires on the micro drivers because they only have to conduct part of the total supply current and because they are very short.
Please note that the input and the output of the motor drivers are at different voltage levels.
The voltage on the motor side is pretty low - so when you command 15A motor current you will see less than 2A on the motor driver supply side.
Thank you for this information! We are building a 8dof quadruped, and just were curious about your process.