DIY Electronic ProjectsDIY Electronic Projects

ByByAlan Parekh Alan Parekh C.Tech, B. Sc.C.Tech, B. Sc.

OverviewOverview

• What is Hacked Gadgets?What is Hacked Gadgets?• Computer Parts ProjectsComputer Parts Projects

– Hard Drive CreationsHard Drive Creations– Others…Others…

• LED ProjectsLED Projects• Fun ProjectsFun Projects• Large ProjectsLarge Projects• Education and Career PathEducation and Career Path• QuestionsQuestions

Hacked GadgetsHacked Gadgets

• GoalGoal– Encourage out of the Encourage out of the

box thinking box thinking – Promote the DIY Promote the DIY

electronic movementelectronic movement• Features interesting Features interesting

DIY projectsDIY projects• Almost 2 years oldAlmost 2 years old• 500,000 Page views 500,000 Page views

per monthper month• 180,000 RSS Views 180,000 RSS Views

per monthper month

Hacked Gadgets ForumHacked Gadgets Forum

• The forum allows The forum allows for new project for new project discussionsdiscussions

• Electronic Electronic troubleshooting troubleshooting helphelp

• Sharing of Sharing of knowledgeknowledge

Computer Parts ProjectsComputer Parts Projects

• Hard Drive CreationsHard Drive CreationsComputer Hard Drives Computer Hard Drives are a marvel of are a marvel of technology yet they technology yet they are often tossed in the are often tossed in the trash when they are trash when they are replaced. Instead of replaced. Instead of throwing them out throwing them out why not use the drive why not use the drive as the beginning of a as the beginning of a new project!new project!

Hard Drive ClocksHard Drive Clocks

• Spin the drive platters Spin the drive platters and use POV to display and use POV to display clock handsclock hands

• LEDs are used to shine LEDs are used to shine through a slot in the top through a slot in the top platterplatter

• Microcontroller keep Microcontroller keep time and tracks the real time and tracks the real time position of the time position of the spinning slot.spinning slot.

Hard Drive Clock VideosHard Drive Clock Videos

• Alan Parekh’s Clock Alan Parekh’s Clock • Cornell University Cornell University ClockClock

Web LinkWeb Link

Mechanical Hard Drive Mechanical Hard Drive ClocksClocks• Stepper motor read head driveStepper motor read head drive• Custom clock controllerCustom clock controller Web LinkWeb Link

Hard Drive Parts ClockHard Drive Parts Clock

• Uses a standard clock mechanismUses a standard clock mechanism• All shown parts are from hard drivesAll shown parts are from hard drivesWeb LinkWeb Link

Hard Drive OscilloscopeHard Drive Oscilloscope

• Hard Drive read Hard Drive read write arms move write arms move using a voice coilusing a voice coil

• Voice Coils are also Voice Coils are also used in audio used in audio speakersspeakers

• Use the voice coil, Use the voice coil, mirrors and a laser mirrors and a laser to make a Hard to make a Hard Drive Oscilloscope!Drive Oscilloscope!

Hard Drive Oscilloscope Hard Drive Oscilloscope VideosVideos

Web Link

Hard Drive SpeakersHard Drive Speakers

• Vibrate the hard drive Vibrate the hard drive read head by applying read head by applying audio to the voice coilaudio to the voice coil

• Smaller mechanisms Smaller mechanisms provide a higher pitch provide a higher pitch (tweeter)(tweeter)

• Larger mechanisms Larger mechanisms provide a lower pitch provide a lower pitch (midrange)(midrange)

Hard Drive Speaker VideoHard Drive Speaker Video

Web Link

LED Fan ClockLED Fan Clock

• Uses a standard 3 Uses a standard 3 wire case fanwire case fan

• RGB LEDRGB LED

• Microcontroller Microcontroller

LED Fan Clock VideoLED Fan Clock Video

Web Link

Computer Mouse FlashlightComputer Mouse Flashlight

• Creator was 7 years oldCreator was 7 years old• RequiresRequires

– Old computer mouseOld computer mouse– White LEDWhite LED– ResistorResistor– Battery SnapBattery Snap– 9 Volt Battery9 Volt Battery– WireWire

Web Link

Injkjet Cartridge ProjectsInjkjet Cartridge Projects

• Create a circuit Create a circuit to control a to control a Inkjet CartridgeInkjet Cartridge

• Print on waterPrint on water

• Shoot words on Shoot words on paperpaper

• Make a draw-botMake a draw-bot

Web Link

Injkjet Cartridge VideosInjkjet Cartridge Videos

LED ProjectsLED Projects

• Why use LEDs?Why use LEDs?– Low power useLow power use– Cool to touchCool to touch– Long lifeLong life– Good vibration Good vibration

insensitivityinsensitivity– InexpensiveInexpensive

Web Link

LED HatLED Hat

• ATmega8515-8PC ATmega8515-8PC microcontroller microcontroller

• 512 LEDs512 LEDs

• Over 8 hours of Over 8 hours of soldering just LEDssoldering just LEDs

Web Link

LED Hat VideoLED Hat Video

LED Coffee TableLED Coffee Table

• Light sensing Light sensing devices sense devices sense movementmovement

• Microcontroller Microcontroller translates translates movement into movement into an LED display an LED display

Web Link

LED Coffee Table VideoLED Coffee Table Video

Hotdog LEDsHotdog LEDs

• Voltage is applied at Voltage is applied at each end of the hotdogeach end of the hotdog

• Hotdog acts as a large Hotdog acts as a large resistor dropping the resistor dropping the voltage proportionately voltage proportionately across its lengthacross its length

• Since some LEDs only Since some LEDs only need 2 volts to light need 2 volts to light it’s easy to simply stick it’s easy to simply stick in the LED to light itin the LED to light it

• Note that polarity Note that polarity matters…matters…

Web Link

Huge LED ClockHuge LED Clock

• Remove the Remove the guts from a guts from a cheap alarm cheap alarm clockclock

• Rewire the Rewire the original LEDs to original LEDs to external high external high power LEDspower LEDs

Web Link

LED Stair LightsLED Stair Lights

• Prototype uses laser Prototype uses laser beams to detect beams to detect stairwell entrystairwell entry

• Kit uses infrared beamsKit uses infrared beams

• Ten separate outputs Ten separate outputs for individual light for individual light operationoperation

• Simple construction Simple construction and test procedureand test procedure

Store LinkStore Link Project LinkProject Link

LED Stair LightsLED Stair Lights

• Boards are created using a photo etch procedure in Boards are created using a photo etch procedure in a dark rooma dark room

• Resist is exposed to UV light to cure itResist is exposed to UV light to cure it• Board is then developed in various chemical bathsBoard is then developed in various chemical baths• Eventually the board is etched as usualEventually the board is etched as usualBoard Construction Web LinkBoard Construction Web Link

LED Stair Light InstallsLED Stair Light Installs

LED Stair Light VideoLED Stair Light Video

UV LED Scanner HackUV LED Scanner Hack

• 40 UV LEDs40 UV LEDs

• Existing stepper Existing stepper motor drives LED motor drives LED arrayarray

• Custom Custom microcontroller microcontroller drives motordrives motor

Web LinkWeb Link

Potato vs Defibrillator Potato vs Defibrillator CapacitorCapacitor• 54uF capacitor 54uF capacitor

from a from a defibrillator defibrillator machinemachine

• 4200V capacitor 4200V capacitor charged to charged to 3000 Volts DC3000 Volts DC

• Instant mashed Instant mashed potatoespotatoes

Web LinkWeb Link

Scope ClockScope Clock

• AVR Microcontroller keeps track of timeAVR Microcontroller keeps track of time

• Scope is put into XY modeScope is put into XY mode

• Circuit outputs analog data to draw the Circuit outputs analog data to draw the clock hands and text on the displayclock hands and text on the display

Computer Controlled Water Computer Controlled Water Spray SystemSpray System

• Vision systemVision system

• Computer program, coded in C#Computer program, coded in C#

• Solenoid controlled water spray systemSolenoid controlled water spray system

Computer Controlled Water Computer Controlled Water Spray System VideosSpray System Videos

Web LinkWeb Link

Weave MirrorWeave Mirror

• 768 motorized 768 motorized cylinders cylinders

• Central camera Central camera looks outlooks out

• Cylinders Cylinders rotate to mimic rotate to mimic what the what the camera seescamera sees

Web LinkWeb Link

Weave Mirror VideoWeave Mirror Video

Pick and Place MachinePick and Place Machine

• Installing surface mount components is time Installing surface mount components is time consuming, this machine does it automaticallyconsuming, this machine does it automatically

Web LinkWeb Link

Industrial VersionIndustrial Version

DIY CNC MachineDIY CNC Machine

• Members of the Hacked Gadgets Forum Members of the Hacked Gadgets Forum got together and built a CNC machine from got together and built a CNC machine from scratchscratch

Education and Career PathEducation and Career Path

• Industrial Electronics – Red River Industrial Electronics – Red River College (1993)College (1993)

• Digital Electronics - Red River College Digital Electronics - Red River College (1996)(1996)

• Information System Programmer Information System Programmer Analyst - Red River College (2000) Analyst - Red River College (2000)

• Computer Science Degree – Computer Science Degree – University of Manitoba (2007)University of Manitoba (2007)

Education and Career PathEducation and Career Path

• Fire Alarm Industry Fire Alarm Industry – CompaniesCompanies

•Pyrene FirePyrene Fire

•SimplexGrinnell SimplexGrinnell

– TechnologyTechnology•Hard Wired Conventional SystemsHard Wired Conventional Systems

•Networked Intelligent SystemsNetworked Intelligent Systems

Education and Career PathEducation and Career Path

• Microcontroller DevelopmentMicrocontroller Development– Recognized developer by Microchip Inc. Recognized developer by Microchip Inc.

(Creators of the PIC line of (Creators of the PIC line of microcontrollers)microcontrollers)

– Prototype / Proof of Concept workPrototype / Proof of Concept work– Specialize in 16F628 and 16F88 controllersSpecialize in 16F628 and 16F88 controllers

• Online LED and Project SalesOnline LED and Project Sales– Sell LEDs to the electronic hobby marketSell LEDs to the electronic hobby market

Education and Career PathEducation and Career Path

• Intelligent Hospital SystemsIntelligent Hospital Systems– Robotic Hospital EquipmentRobotic Hospital Equipment– First product called RIVA (Robotic IV Automation) is currently in First product called RIVA (Robotic IV Automation) is currently in

R&DR&D– Availability of RIVA will be mid next year (2008)Availability of RIVA will be mid next year (2008)

Comments or Questions?Comments or Questions?

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