Total rebuild 2

After a mammoth weekend effort, John got the robot back into (almost) working order in the new chassis.

We’ve had a fun evening driving it round the office, testing out the line following sensors and seeing what sort of slopes it can climb up.

Snags we’ve hit:

  • the line following doesn’t work
    • we *think* that the line following sensor array has been bolted on backwards, so the robot is turning away from the line instead of turning towards it.
  • The new chassis has a slight twist in it
    • But it doesn’t seem to affect the straightness of travel (phew)
      • probably because our front wheels don’t do any steering anyway
  • The motors were wired backwards initially

Things which are great about the new chassis:

  • We’ve managed to fit in bigger motors for moar powa!
    • Which makes us quite a lot heavier too, but hey-ho
  • The battery compartment is big enough for our bigger batteries
    • and as a result, the batteries lasted for this evening’s testing session
  • The logic power switch has been moved away from the motor power switch, so no more accidental turning off the wrong one!
  • It has an external USB programming port for the arduino
    • so no more fishing around a cramped compartment trying to get the connector to go in
  • It still fits inside the A4 footprint (with about 1mm to spare!)
  • It’s red!
    • Which is obviously the colour of fast things 🙂

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