Transcript DIY Electronic Projects By Alan Parekh C.Tech, B. Sc.

DIY Electronic Projects
By
Alan Parekh C.Tech, B. Sc.
Overview
• What is Hacked Gadgets?
• Computer Parts Projects
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•
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– Hard Drive Creations
– Others…
LED Projects
Fun Projects
Large Projects
Education and Career Path
Questions
Hacked Gadgets
• Goal
– Encourage out of the box
thinking
– Promote the DIY
electronic movement
• Features interesting DIY
•
•
•
projects
Almost 2 years old
500,000 Page views per
month
180,000 RSS Views per
month
Hacked Gadgets Forum
• The forum allows for
•
•
new project
discussions
Electronic
troubleshooting help
Sharing of knowledge
Computer Parts Projects
• Hard Drive Creations
Computer Hard Drives
are a marvel of
technology yet they
are often tossed in the
trash when they are
replaced. Instead of
throwing them out
why not use the drive
as the beginning of a
new project!
Hard Drive Clocks
• Spin the drive platters and
•
•
use POV to display clock
hands
LEDs are used to shine
through a slot in the top
platter
Microcontroller keep time
and tracks the real time
position of the spinning
slot.
Hard Drive Clock Videos
• Alan Parekh’s Clock
Web Link
• Cornell University
Clock
Mechanical Hard Drive Clocks
• Stepper motor read head drive
• Custom clock controller
Web Link
Hard Drive Parts Clock
• Uses a standard clock mechanism
• All shown parts are from hard drives
Web Link
Hard Drive Oscilloscope
• Hard Drive read write
•
•
arms move using a
voice coil
Voice Coils are also
used in audio
speakers
Use the voice coil,
mirrors and a laser to
make a Hard Drive
Oscilloscope!
Hard Drive Oscilloscope Videos
Web Link
Hard Drive Speakers
• Vibrate the hard drive
•
•
read head by applying
audio to the voice coil
Smaller mechanisms
provide a higher pitch
(tweeter)
Larger mechanisms
provide a lower pitch
(midrange)
Hard Drive Speaker Video
Web Link
LED Fan Clock
• Uses a standard 3
•
•
wire case fan
RGB LED
Microcontroller
LED Fan Clock Video
Web Link
Computer Mouse Flashlight
• Creator was 7 years old
• Requires
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–
Web Link
Old computer mouse
White LED
Resistor
Battery Snap
9 Volt Battery
Wire
Injkjet Cartridge Projects
• Create a circuit to
control a Inkjet
Cartridge
• Print on water
• Shoot words on
paper
• Make a draw-bot
Web Link
Injkjet Cartridge Videos
LED Projects
• Why use LEDs?
– Low power use
– Cool to touch
– Long life
– Good vibration
insensitivity
– Inexpensive
Web Link
LED Hat
• ATmega8515-8PC
microcontroller
• 512 LEDs
• Over 8 hours of
soldering just LEDs
Web Link
LED Hat Video
LED Coffee Table
• Light sensing
devices sense
movement
• Microcontroller
translates
movement into
an LED display
Web Link
LED Coffee Table Video
Hotdog LEDs
• Voltage is applied at
•
•
•
each end of the hotdog
Hotdog acts as a large
resistor dropping the
voltage proportionately
across its length
Since some LEDs only
need 2 volts to light it’s
easy to simply stick in
the LED to light it
Note that polarity
matters…
Web Link
Huge LED Clock
• Remove the guts
from a cheap
alarm clock
• Rewire the
original LEDs to
external high
power LEDs
Web Link
LED Stair Lights
• Prototype uses laser
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beams to detect stairwell
entry
Kit uses infrared beams
Ten separate outputs for
individual light operation
Simple construction and
test procedure
Store Link
Project Link
LED Stair Lights
• Boards are created using a photo etch procedure in a
dark room
• Resist is exposed to UV light to cure it
• Board is then developed in various chemical baths
• Eventually the board is etched as usual
Board Construction Web Link
LED Stair Light Installs
LED Stair Light Video
UV LED Scanner Hack
• 40 UV LEDs
• Existing stepper motor
drives LED array
• Custom microcontroller
drives motor
Web Link
Potato vs Defibrillator Capacitor
• 54uF capacitor
from a defibrillator
machine
• 4200V capacitor
charged to 3000
Volts DC
• Instant mashed
potatoes
Web Link
Scope Clock
• AVR Microcontroller keeps track of time
• Scope is put into XY mode
• Circuit outputs analog data to draw the clock
hands and text on the display
Computer Controlled Water Spray
System
• Vision system
• Computer program, coded in C#
• Solenoid controlled water spray system
Computer Controlled Water Spray
System Videos
Web Link
Weave Mirror
• 768 motorized
cylinders
• Central camera
looks out
• Cylinders rotate
to mimic what
the camera sees
Web Link
Weave Mirror Video
Pick and Place Machine
• Installing surface mount components is time
consuming, this machine does it automatically
Industrial Version
Web Link
DIY CNC Machine
• Members of the Hacked Gadgets Forum got
together and built a CNC machine from scratch
Education and Career Path
• Industrial Electronics – Red River College
(1993)
• Digital Electronics - Red River College
(1996)
• Information System Programmer Analyst Red River College (2000)
• Computer Science Degree – University of
Manitoba (2007)
Education and Career Path
• Fire Alarm Industry
– Companies
• Pyrene Fire
• SimplexGrinnell
– Technology
• Hard Wired Conventional Systems
• Networked Intelligent Systems
Education and Career Path
• Microcontroller Development
– Recognized developer by Microchip Inc.
(Creators of the PIC line of microcontrollers)
– Prototype / Proof of Concept work
– Specialize in 16F628 and 16F88 controllers
• Online LED and Project Sales
– Sell LEDs to the electronic hobby market
Education and Career Path
• Intelligent Hospital Systems
– Robotic Hospital Equipment
– First product called RIVA (Robotic IV Automation) is currently in R&D
– Availability of RIVA will be mid next year (2008)
Comments or Questions?
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