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ok, i kinda understand now, but the one thing that confuses me is the switching of the + voltage, sorry if this is a stupid question but doesnt current flow - to + ? and also, my robot will be almost entirely plastic, what should i ground the battery and the processor to?
Quoteok, i kinda understand now, but the one thing that confuses me is the switching of the + voltage, sorry if this is a stupid question but doesnt current flow - to + ? and also, my robot will be almost entirely plastic, what should i ground the battery and the processor to?By convention, current flows + to -.
A power ground serves to provide a return path for fault currents and therefore allow the fuse or breaker to disconnect the circuit. The power ground is also often bonded to the house's incoming pipework, and pipes and cables entering the bathroom are sometimes cross-bonded. This is done to try to reduce the voltage between objects that can be touched simultaneously. Filters also connect to the power ground, but this is mainly to stop the power ground carrying noise into the systems which the filters protect, rather than as a direct use of the power ground. See: NEC (Article 250).
Bah i hate conventions, last year we "learned" about electricity in science class and the teacher taught the current flowed from + to -, since i already knew otherwise it confused the heck out of me, so bah to conventions, they are worthless.
Do like the others said but I think before you connect all the negative wires to the ground it is good connecting a resistor between the point where the wires are connected and the ground.
alright, got that all figured out now. my next question would be how do i put a heat sink on the h-bridge/motor controller? could i just rig it on there any old way just making sure it touches as much motor driver as possible?? i really dont want to use a fan cause thats just wierd for a robot.