DIY Electronic Projects

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2 Νοε 2013 (πριν από 4 χρόνια και 7 μέρες)

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DIY Electronic Projects

By

Alan Parekh
C.Tech, B. Sc.

Overview


What is Hacked Gadgets?


Computer Parts Projects


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


Cornell University
Clock


Web Link

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


Old computer mouse


White LED


Resistor


Battery Snap


9 Volt Battery


Wire

Web Link

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
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


Web Link

Industrial Version

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?

To download this presentation please
go here:

http://hackedgadgets.com/cttam