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Motors & Control
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Topic starter
2020-02-19 8:30 pm
My grandson had a working ROV, but when they went to go from jumper wires to a more permanent wiring system the whole thing quit working. On his l298n motor driver I'm sure before when you powered up the ROV the 5 volt led and the leds marked L1--L2--L3--L4 all turned on and stayed on, but now when you turn on the power the 5 leds light up but then the 5 volt led stays on and all 4 of the "L" leds go out and of course the motors now do not turn. Did he some how short out the motor driver? He took a picture of the wiring and drew a picture of the wiring layout before he started.
2020-02-19 9:00 pm
Did he some how short out the motor driver?
Not sure how you can short out the motors? You can short out the circuitry or battery connected to them causing a current overload ! My assumption here would be the output of the L298 would handle a short between the motor output connectors and not be damaged.
After some reading some say you can burn out the L298 however the specs say "The controller has fast short-circuit protection diodes, and a nice heatsink to keep the L298N happy."
Do the motors work if you connect a battery to them?
Perhaps a clear photo or wiring sketch of the project might help?
Topic starter
2020-02-19 10:13 pm
No motors work fine, but I believe the the problem lies with the motor driver, We went to the old standby (youtube) and from what we have seen the 4 leds for L1 to L4 should stay lit or at least flash as each circuit is activated. I looked at the pictures he took before and after the wiring was done and every thing is hooked up as before. I did a test, I took a jumper from the 5 volt pin on the 2560 and in turn touched each of the of the pins -marked IN1 --IN2--IN3--IN4 on the l298n ( one at a time) and the led for that pin lite up and the tracks turned. Then one at a time, I unplugged the wire from the from the 2560 to IN1--IN4 and each time I unplugged the wire from the 2560 the motors would turn.