Hello all, ???
I am a novice working with an intermediate/advanced circuit. So I need advice making it safe! See the attached picture and my questions below.
**(1) **I am using a buck converter to power two servos, and an Arduino to control them. Can I connect the 3S battery ground to the isolated circuit ground from the converter?
(2) I have the same question for the main power supply. ODrive is powered from the 12S lipo, but controlled from the Arduino. Can I connect all the grounds in a "Star ground"?
(3) My whole robot is metal, so I was advised to connect "Star ground" to the chassis. Is this a good idea?
**(4) **I want a safe way to turn the robot off in a worst case scenario. Currently my plan is to use a relay controlled by the Arduino, powered by the 3S lipo. This relay they controls a normally off contactor solenoid switch. (With an E-stop in series). This way I can shut off the motors wirelessly, and via E-stop. Is this a good method?
(5) Any general tips on being save with 12S lipo power?
Thanks so much in advance