A current/voltage question: driving three DC underwater motors via Pi - Raspberry Pi Forums

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hello pi gurus,
team acquired 2 sizable water tanks use in upcoming europa exploration exhibit @ space foundation discovery center. i'm helping build pi controller, controlling underwater drone team building using nes-style usb controller , node.js.

controller part working fine, don't know way when comes electricity. fry pi if run following?

option 1: control 3 dc motors using pi motor controller hat

motor hat 5-12 volts external power , max 5 amps current:
https://www.adafruit.com/product/2348

t100 motor 6-12 volts, max 12.5 amps current :
http://docs.bluerobotics.com/thrusters/ ... ifications

found nodejs code control motor hat at:
https://www.npmjs.com/package/motor-hat (yay!)

motor hat max out if controlling 3 motors? i'm concerned max current of hat vs single motor (and we're controlling three).

option 2: control 3 motor escs (electronic speed converters) using pi pwm hat

here's esc recommended motor manufacturer:
http://www.bluerobotics.com/store/thrusters/besc30-r2/

version have came them "works same", has 2 wires instead of three. crossing fingers still works pwm (but it's 2 wires? maybe not pwm?). sent two-wire 1 after ordering 3 wire 1 (i think).

here's older model better diagram showing 3 wires doing:
http://docs.bluerobotics.com/besc/#installation

here's pwm hat:
https://www.adafruit.com/product/2327

can't find nodejs module control hat specifically, maybe can work i2c module or something.

thoughts?

forward ideas on how proceed. electrical experience still lacking, i'm excited figured out in order inspire visitors. taking look! :d

so couple of things here first docs on thrusters can pull 12.5amps ever use needs able handle current or on heat.

second need understand difference between types of motors adafruit motor hat control both stepper motors , dc brushed motors isn't suitable brushless motors. looking @ specs of thrusters r brushless motors.

brushless motors need use brushless electronic speed controller (esc) , 1 rated fro enough amps , 1 each motor probaby @ https://www.youtube.com/watch?v=br_xv9x7yzc


raspberrypi



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