Suggestions for the new projects:
Digital Oscilloscope
Barcode reader (1D)
Rain detector (optical, acoustic, conductivity, capacitive?)
Weather station: temperature, pressure, humidity (illumination?)
Lock-in amplifier
Wind-speed measurement
Talking clock/calendar
Talking inclinometer
Bike inclinometer with memory and power indicator.
Auto-ranging acoustic power meter
Battery charger/cycler
Battery-powered emergency light (that keeps a battery charged without killing it.)
DC-DC convertor
Pulse height analyzer
Capacitance meter
Frequency Counter
Function generator
Projects 1997 - 2013
Bicycle wheel LED images
3D scanner
Home alarm
Metronome
IR remote control code decoder
Sound controlled robot
Sun tracker
Heat sensing robot
Infrared camera
Music mood light
Model lighthouse
Model traffic intersection (pedestrian crossing, railway, sensing)
Thermometers
Luminance meters with data logging, photographic light meters
Programmable car models,
Blood pressure meter
Pulse monitor
ECG
Soil conductance meter
Sonar
Robotic arm
Stabilizer for arc lighthouse
Magnetic position detector
Beat counter
Model lighthouse
Stroboscope
Magnetometer
Stopwatch
Amateur telescope drive
Timing gates (for model races)
Chess clock
Dancing robot
Board tachometer
Doppler effect velocity meter
Laser light show
Clapping controlled light switch
Smoke detector
Talking clock
Voice encryptor
Sonar tape
Sonar assisted model cars
Tuners
Movement mimicking robot
Lie detector
Light source locator
Sound source locator
Bike Computer
Automatic curtain controller
Hall effect compass
Scheduler
Music keyboard
Diving computer
Height Meter
Driven Chaotic pendulum
Frequency Anylizer
Morse code reader
Sweeping Stroboscope
Sound Activated Switch
Sexapodal Walking Robot
Microprocessor Controlled Toy Excavator
Programable Toy Tank
Infrared Remote Control Robot
Guitar Tuner
FFT Audio Analyzer
Glove as a musical Instrument
Weather Station
Forklift
Forklift avoiding the walls
Sun tracker (no moving parts)
7 LED based "rocking" flash sign
Music keyboard 16 key pads, record and play
Sound controlled car
Sun tracker with UV monitor
Universal IR remote control
car learning its way to target (light directed)
Plotting device
Person tracker and water shooter
Bike inclinometer
Sonar pointer
Hemoglobin monitor (IR and red LED, ratio of transmission)
Garage door
Sound frequency multiplier
Chess clock
Digital scope
Battery charger
Music tuner
Bike computer (speed, distance)
Sweeping sonar
Navigating car
Sound tracker, no moving parts
Stroboscope
Ultrasonic locator (2 sensors)
Game console
Morse code
Auto ranging Voltmeter
Tank firing Elastics
Sonar car
music keyboard, recording
Sun tracking mirror
Heart rate monitor
Speed and position meter
Auto ranging acoustic power meter
Heat seeking hovercraft
Thermostat
IR Thermometer with memory
Treadmill
Color sensor, fuzzy logic
Self levelling desk
Intelligent conveyer belt with metal detector
LED Display (10 LEDs)
Multi tone key instruments (12 switches, speakers)
Transmitter receiver
Hemoglobin sensor (red, green laser, red and green sensors)
MIDI Player
Wireless controlled vehicle (2 motors, 2 distance sensors, 8 bit transmitter-receiver)
Laser Harp (Laser, 13 photodiodes)
Roulette wheel (66 LEDs 4 counters, 10 binary to 8 converters)
Random walk robot with distance sensors (ultrasonic sensor,
Motion detector speedometer 3 motion detectors)
Wireless data communication
Projection keyboard
GPS dog
Target seeking bomb
GPS reader
Bacteria like robot
Stirring machine
Alarm Clock
Lie detector
Tic tac toe game
Ultrasonic speed measurement
Virtual violin
Tilt controlled musical instrument
Battleship game
Talking glove
Bike recorder for the shock absorbers
Record and play back a tone
Morse code generator
Balance a ball in the middle
Random numbers from Geiger counter
Wireless remote music player
Magnetic gun
Active damping of a spring pendulum
Game - play music-replay correct tone
Car following a line
Loop playback and overlay
Oxygenation of Hemoglobin detector
Mini Segway
Violin with distance sensor
Bop-it game talking
Parking a model car