Useless Robot

Useless Robot Overview

Project by Austin Bartmess and Jeremy Deremer

This is a robot developed on an ARM Microcontroller (LPC 1768). It uses a servo, two DC motors both powered by an external power source, nine red LEDs, two RBG LEDs, a speaker, a toggle switch and a transistor.

The goal of this robot is to stay off. However, the user can turn it on without harm. It attempts to stay off via turning a toggle switch off with an arm attached to a servo. If the robot is turned on too much, it will progressively get angry. It starts by not smiling and changing eye colors. Following that, the robot will frown and yell at the user. Finally, the robot will drive around randomly while screaming and looking angry via its LEDs.

Required Parts

mbed Microcontroller x1
USB to mini USB cable x1
Servo x1
H-Bridge Breakout Board x1
DC Motors x2
DC Motor Wheels x4
Red LEDs x9
RGB LEDs x2
0.5W Speaker x1
Toggle Switch x1
BJTransistor x1
Jumper Cables Kit x1
Breadboard x2

Pinout and Connections

Mbed	H-Bridge	DC Motors	Servo	Transistor	Speaker	LEDs	Barrel Jack	Toggle Switch
GND	GND		(-)	Emitter	(-)	GND	(-)	(-)
Vu
Vin	Vm		(+)				(+)
Vout	Vcc, /STBY							(+)
p5	AIN1
p6	AIN2
p10						LED+
p11						LED+
p12						LED+
p15								Control
p21	PWMA
p22				Collector
p23						Blue
p24						Green
p25						Red
p26			Control
	AO1	(+)
	AO2	(-)