Troubleshooting
Servo Not Twisting
Even with colored wires it is still shockingly easy to plug a servo in
backward. This might be the case.
Still Not Working
A mistake we made a time or two was simply forgetting to connect the
power (red and black wires) to 5 volts and ground (GND).
Fits and Starts
If the servo begins moving, then twitches, and there’s a flashing light on
your RedBoard, the power supply you are using is not quite up to the
challenge. Using a wall adapter instead of USB should solve this problem.
Experiment 9: Driving a Motor with an
H-Bridge
Introduction
How could you make a motor spin in different directions? With an H-Bridge!
In this experiment you will use the H-Bridge to control the motor’s direction
and speed.
Parts Needed
You will need the following parts:
•
1x
Breadboard
•
1x
SparkFun RedBoard
•
1x
SN754410 H-Bridge IC
•
1x
48:1 Geared Motor
•
12x
Jumper Wires
Didn’t Get the Tinker Kit?
If you are conducting this experiment and didn’t get the Tinker Kit, we
suggest using these parts:
SparkFun RedBoard -
Programmed with Arduino
DEV-12757
Breadboard - Self-Adhesive
(White)
PRT-12002
Jumper Wires - Connected
6" (M/M, 20 pack)
PRT-12795
Hobby Gearmotor - 200
RPM (Pair)
ROB-13302
Page 48 of 63