Louis Chow Jesse Liang Philip Pham EECS 129B March 11, 2008

Etching PCB’s – Part 1 Design PCB gerber using EagleCAD. Etching PCB’s Print out PCB onto Press-n-Peel Film and iron onto Copper-Clad fiberglass board.

Rinse with water. Drill via-holes and solder circuit components Etching PCB’s – Part 2 Peel off film, leaving circuit outline, and dip into bubbling acetone.

Motor Selector Power Motor Driver Encoder

Concept DesignWood Cuts

Sample Diagrams and Gear Work Part A Part B

Special Machines Used Turning Lathe Drill Press Band Saw

Shaft Customization and Gears

Encoder Diagrams Encoder Waveforms

WASD and Automatic Input Control Encoder Precision Arduino Microcontroller Programming

Bill of Materials (Electronics) Mouser Part #Manufacturermfr. Part #DescriptionPackagingQtyCost p. u.Total 595-SN754410NETexas InstrumentsSN754410TI Quad H-BridgePDIP-161$ LD1084V12ST MicroelectronicsLD1084V1212V 5.0A Low-Dropout RegulatorTO-2202$1.74$ MC7812ECTFairchild SemiconductorMC7812ECTLinear Regulator 12V 1.0ATO-2201$ MC7805ECTFairchild SemiconductorMC7805ECTLinear Regulator 5V 1.0ATO-2201$ ULN2065BST MicroelectronicsULN2065B1.5A Darlington Quad ArrayPDIP-161$ C2012X7R1C334KTDKC2012X7R1C334KSMD 16V 0.33uF X7R CapSMD 08054$0.32$ GRM40X104K25KMurataGRM40X104K25KSMD 25V 0.1uF X7R CapSMD 08058$0.13$ GRM219R71E105KA8DMurataGRM219R71E105KA8DSMD 25V 1.0uF X7R CapSMD 08055$0.04$ GRM21BR61E475KA12MurataGRM21BR61E475KA12SMD 25V 4.7uF X7R CapSMD 08054$0.40$ XRL25V470-RC-TBXicon140-XRL25V470-RC-TB25V 470uF 20% Electrolytic CapRadial6$0.17$ XRL25V2200-RCXicon140-XRL25V2200-RC25V 2200uF 20% Electrolytic CapRadial1$ XRL25V220-RCXicon140-XRL25V220-RC25V 220uF 20% Electrolytic CapRadial2$0.12$ B25Comair Rotron411615B02500TO-220 Aluminum Heatsink (large)Through-Hole2$1.38$ B00Comair Rotron822802B00000TO-220 Aluminum Heatsink (small)Through-Hole2$0.38$ CD74HC14ETexas InstrumentsCD74HC14EHex InverterPDIP-142$0.64$ TEKT5400SVishayTEK5400SInfrared Detecting DiodeThrough-Hole5$0.58$ TSKS5400SVishayTSKS5400S-ASZInfrared Emitting DiodeThrough-Hole5$0.54$ K-RCXicon K-RCSMD 470k 1% ResistorSMD 08055$0.04$ CRCW K-E3VishayCRCW08051K00FKEASMD 1k 1% ResistorSMD 08055$0.03$ SN74CBT3257DRTexas InstrumentsSN74CBT3257DRSignal Switche 4-Bit 1-of-2 FETSOIC-161$ L712RASwitchcraftL712RA2.5MM DC JackPCB1$ Molex Molex KK Series 0.156" Crimp Terminal 50$0.08$ Molex Molex KK Series 0.156" Crimp Terminal Housing 2-Circuit 5$0.11$ Molex Molex KK Series 0.156" Crimp Terminal Housing 3-Circuit 5$0.13$ Molex Molex KK Series 0.156" Crimp Terminal Housing 4-Circuit 2$0.22$ Molex Molex KK Series 0.156" Crimp Terminal Housing 5-Circuit 1$ Molex Breakaway Headers - PCB 24-CircuitThrough-Hole5$1.47$ PSA-31U-150-RPhilongPSA31U-150-R15V 2.0A Switching Wall Mount Power Supply 1$28.45 Mouser Total$71.03 Sparkfun SKU#DescriptionCost DEV-00666Arduino USB Board34.95

Bill of Materials (Mechanical) SupplierSupplier Part#mfr. Part #DescriptionQty Cost p. u.Total Jameco BYG016-RUnipolar Stepper Motor 7.5Deg 12V 75Ohm2$20.35$40.70 SDP/SIS1164Z-048A Pitch 40-Tooth Aluminum Alloy Spur Gear1$14.24 SDP/SIA 1B 1-T Pitch 10-Tooth Brass Pinion2$6.68$13.36 SDP/SIS1164Z-048A Pitch 30-Tooth Aluminum Alloy Spur Gear1$13.20 Home Depotn/a 4'x8' Birch Plywood1$45.00 Home Depotn/a 5/16 Fine Thread Nuts5$0.20$1.00 Home Depotn/a 5/16" Washers5$0.20$1.00 Home Depot n/aLazy Susan3$3.67$11.01 Home Depotn/a Metal Epoxy2$2.37$4.74 Home Depotn/a 3'x.5" Aluminum Rod2$6.00$12.00 Home Depotn/a 1" Corse Wall Screws $2.00 Home Depotn/a 1.75" Corse Wall Screws100$0.02$2.00 Home Depotn/a 8" Concrete QuickTube1$5$5.00 Home Depotn/a #6 Threaded Shaft1$1.00 Home Depotn/a #6 Nuts1$0.99 Home Depotn/a 1/2" Bolt3$0.20$0.60 Home Depotn/a 1/2" Bolt Wood Anchor3$0.20$0.60 eBayn/a Chamerlain Liftmaster Worm Gear 32Teeth & Worm1$19.95 eBayn/a 1 oz. Copper Clad Board 8.5"x11"1$1.00 eBayn/a 6" Primary Mirror1$40.00 Orion Telescopesn/a 1.75" Seconary Mirror1$20.00 Orion Telescopesn/a 3" Rack Pinion Focuser1$15.00 Ace Hardwaren/a 1/2" Diamater Brass Washer2$2.75$5.50 Kinko'sn/a Transparency Paper x 51$2.50 Memorexn/a Clear CD-R5$0.25$1.25 Mechanical Total $273.64

Total Cost of Project:$ Total Cost of Time and Sweat:Priceless