Measure Temperature And ...
- Display it
- Warn a driver about icy roads
- Warn a gardener about frost
- Warn the cook if a fridge is too warm
- Warn the cook if a freezer is too warm
- Control the fish tank temperature
- Control a computer cooling fan
- Control a greenhouse heater
- Control a conservatory heater
- Control a hedgehog hibernation box temperature
- Warn if a vivarium is too warm / cool
- Many more similar examples
Measure The Light Level And ...
- Display the result
- Turn on lights when it gets dark
Car headlights
Street lights
Porch light
Tropical fish tank
- Warn a driver. The headlights should be on.
- by interrupting the beam, detect earthquakes
- by interrupting the beam, measure tilt or acceleration
- by interrupting the beam, detect an intruder
Build a Timer To ...
- Sound an alarm for a fixed short time
- Time eggs
- Time up to XXXX Seconds
- Control a marine buoy flasher
- Make a frequency to voltage converter for use as ...
a rev counter
a speedometer
- Dispense food for animals
- Automatically water plants
Build an Astable ...
- to produce an audible tone
Door Bell
Various Warning Sounds
- to produce metronome pulses
- to generate more complex musical rhythms
- and count the pulses to ..
make an electronic dice
create random numbers for playing board games
make a timer up to 99 seconds
make a timer up to 99 minutes
make a general purpose logic controller
count model racing car laps
keep score for a cricket match
- used to clock a traffic lights controller
- used to time a pellican crossing
- used to deter animals from entering a garden
- to replace the mechanical flasher unit in older cars
- vary the delay on windscreen wipers
- to help a musician tune a guitar
- to make a bat deterrent - vibrates when it's dark (check to see if this is legal)
- bike indicator lights - with audible warning
Build a Sound Sensor And ...
- measure how loud the sound is
- reduce amplifier gain if the output is too high
- create an intercom
- create a baby alarm
- modify the sound
bass / trebble / volume
wah wah and similar sound effects
- build an intercom
Use Switches And Logic to ...
- Trigger a bicycle alarm
- Light a passenger seatbelt warning
- Sound an alarm when someone attempts to break into a vehicle / tamper with a bicycle / pram
- Remind the driver that the headlights have been left switched on
- Remind the driver that a passenger is not wearing a seat belt
- Alert a person who is hard of hearing that there is someone is at
the front door
- determine which contestant in a quiz pressed first
- sense motion and sound an alarm
- sound an audible warning when a door is opened
- detect a fish bite
- detect bath water level detector and sound an alarm (for a blind person)
Measure resistance To ...
- Estimate soil water content and control irrigation
- Get position information from a potentiometer
Measure Time To ...
- Find capacitance in an RC circuit
- Find inductance in an RL circuit
- Discover human reaction times
Measure Voltage To ...
- find the pH of a solution
- determine the state of charge of a battery
Build Amplifier Circuit/s ...
- to amplify the output from a portable CD/MP3/minidisk etc player to operate
a loudspeaker
- to increase the level of bass in an audio signal
- to remove vocals from suitable audio tracks
- and display the output level
- and produce an overload warning
- to produce a loud warning sound
- for a guitar practice amp
- to produce reverberation, fuzz, wahwah,
frequency division, envelope control, ring modulation and other sound effects
- to combine together audio signals (mixer desk)
- to make a sound activated switch
- to flash lights in time to music
Other Ideas - Hard to Classify
- Bus roll over alarm - reduce passenger puke
- Control a stepper motor used to
dispense pet food
- Beam audio along a LASER beam (or use Infra Red).
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Communication problems
- send data over an Infra Red link
- send data over an optical fibre link
- send data over a serial cable link
- convert serial digital signals to parallel digital signals
- convert parallel digital signals to serial digital signals
- display information on a small or large display board
- measure the signal strength transmitted by a mobile phone
- receive AM radio transmissions
- receive FM radio transmissions
Measurement Problems
- measure and record (using a computer) environmental conditions
- measure and log (using a computer) tortoise hibernation temperatures
- accurately measure the value of an inductor
- accurately measure the value of a capacitor
- analyse the logic state of several digital signals
- display graphically the frequencies present within an audio signal
- digitally store waveforms for display on an oscilloscope
- measure the distortion introduced by an amplifier
- measure the impedance of a loudspeaker system
- measure and record (using a computer) rapidly changing signals
- measure and record (using a computer) very slowly changing signals
Music Problems
An Electronic system to:-
- control MIDI instruments
- generate musical rhythms using a computer
- generate musical sound effects by delaying an audio signal
Other Problems
An Electronic system to:-
- control a toy tank or robot
- control the speed of a motor
- control a servo motor
- display programmable messages
- control bike indicator lights
- chase lights (bug or mini robot)
- send signals
- decode Morse code
- perform simple calculations
- implement a 4-bit computer
- keep score in sports events
- interface devices to computer ports
- provide a re-programmable remote control
Some Recent Project Titles
- Measure Distance using Ultrasonics
- Perfectly timed Morse Code Generator
- Solar Sun Flower
- PIC Fan-Based Temperature Controller
- Measure Green House Light Level. Turn on lights in poor daylight
- Programmable Egg Timer
- Sound Level Meter (LCD Read-out)
- Automatic Gain Control (Prevent Speaker Destruction)
- PIC Based Intelligent Traffic Lights Control
- PIC Based Marine Buoy Light Flasher
- Programmable Porch Light
- Digital Thermometer with Seven Segment Displays
- Digital Thermometer with Programmable Temperature Alerts
- Timed Parking Lights
- Multiplexed multi-channel controller using one data line
- Digital speedometer
- Digital thermometer
- Digital radio tuning - DAC generates a voltage used to tune a varactor diode
- Digital LUX Meter with Low Light Level Alarm
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