Remote Eyeball.


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Category: Home / Real Estate
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We have chosen to break our screen into a set number of units. ... LCD screen separated into 256 distinct squares and 4 quadrants. X and Y directions are spoken to by a ...
Transcripts
Slide 1

Remote Eyeball Group 9 Alpesh Patel Jesse Gusse Derek Vick Jeff Schwentner

Slide 2

Wireless Eyeball Allows full control of a mechanized camera from a remote area. Camera is mounted on two engines. One engine for Pan. One engine for Tilt. Client will control camera remotely utilizing hand held gadget. Video sign will be sent to hand held gadget and showed on the LCD screen. Client can move camera by touching screen.

Slide 3

Wireless Eyeball Three methods of operation. Client mode Allows client to control camera by touching screen. Camera moves to sought area. Video Tracking Camera tracks motion. Computer Interface User controls camera by means of individual computer.

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Wireless Eyeball Artist\'s Rendition 360° Tilt 1 User 2 Tracking 3 Computer On/Off 360° Pan

Slide 5

Wireless Eyeball Objectives

Slide 6

LCD Display & Touch Screen LCD Display & Touch Screen Transmitter Receiver Control Unit (Motors) Control Unit (Motors) Camera Mount Camera Mount

Slide 7

Wireless Eyeball Wireless Video Camera determinations NTSC Signal Format 2.4GHz Wireless Technology LCD Monitor details Composite NTSC & RGB information Connects by RCA video jack 100.7 mm inclining seeing region

Slide 8

Touchscreen Interface

Slide 9

Touchscreen uses are shifted, along these lines we needed to execute the utilization of one in this anticipate. Touchscreens can be found in the accompanying coliseums: Monitors. Data Kiosks. PDA\'s. Vehicles Industry and creation at all levels Self-administration stations.

Slide 10

Analog Resistive Touchscreen The simple resistive touchscreen that we utilized was given by 3M Dynapro. A simple resistive touchscreen acts much like a variable resistor. Contingent upon the touch, an alternate resistance happens. This yields distinctive voltage levels which can be utilized by an AD converter to decide the area of a substantial touch.

Slide 11

Valid Touch The a nalog resistive touchscreens are sensors comprising of two layers, level and vertical. These layers are covered with a resistive material called ITO (indium tin oxide). This resistivity is somewhere around 100 and 500 ohms for every square. PL (polyester covered) exceptionally rough incorporate a TFT (Thin Film Transistor) show FG (flex-on-glass) more moderate and littler made for non-amazing conditions above all, this was the sort that Dynapro gave

Slide 12

Two sorts, 4-wire and 8-wire outlines The 8-wire configuration is for bigger touchscreens 4-wire configuration is for the littler and more regular applications. The one utilized as a part of this anticipate is the 4-wire outline. At the point when perusing the contradicting tomahawks of the touchscreen, the 4 lines are exchanged. Multiplexing must strike unravel the distinctive tomahawks. FG simple resistive touchscreen

Slide 13

4-Wire Design

Slide 14

Touchscreen Picture Dimensions are 2.75" by 3.75". It has the flex link tail. Which is essentially a film with the sign lines painted on. This makes it extremely delicate and ZIF (zero insertion power) connector will be utilized .

Slide 15

Touchscreen Controller The MCU utilized is the AVR 8535 from Atmel. 32 x 8 General-reason Working Registers Up to 8 MIPS Throughput at 8 MHz Data and Nonvolatile Program Memories 8K Bytes of In-System Programmable Flash SPI Serial Interface for In-System Programming Endurance: 1,000 Write/Erase Cycles 512 Bytes EEPROM 512 Bytes Internal SRAM 8-channel, 10-bit ADC

Slide 16

Analog/Digital Conversion ADMUX Register The ADMUX is the place you set the suitable bits with the goal that you can multiplex between info signals. This is essential for this anticipate on the grounds that the distinctive hub peruses on the touchscreen should be multiplexed. ADCH and ADCL Register When a transformation is made. The outcome is found in these two registers. ADCH and ADCL. ADCH holds the upper two bits of the 10-bit result. ADCL holds the lower 8 bits. ADCL gets read first, and once this is perused, the register won\'t be upgraded until ADCH is perused. An estimation of $000 speaks to ground and $3FF is the most noteworthy quality (reference voltage – 1).

Slide 17

AD Program Snippet *ADCSR = (*ADCSR | 0xE0);/* empower ADC *//* change ADMUX HERE and take new*/ADMUX = 0x00; ALVert = ADCL; AHVert = ADCH;/*get full 10 bit ADC must move upper register */AinVert = ( (ALVert) | (AHVert << 8) ); . . . . /*change ADMUX HERE and take new*/ADMUX = 0x02; ALHorz = ADCL; AHHorz = ADCH;

Slide 18

Example Touch (expect AD got 2.5 volt read for both X and Y tomahawks) ADC transformation direction is then (512,512 )

Slide 19

Example Touch Therefore the pixel area would be (184,184). Which is about amidst the showcase, predictable with a 2.5 Volt read on a 5 Volt scale.

Slide 20

However, pixel accuracy is high, that exactness won\'t be possible. We have chosen to break our screen into a set number of units. 16 units by 16 units is the network that will be utilized. Thusly, if a touch yielded a pixel area of (245, 245), the direction set apart by the X on the accompanying chart will be what is sent, RF, to the stepper engines. This direction is (12,12)

Slide 21

Controller Schematic

Slide 22

Wireless Data Link

Slide 23

Wireless Coordinate Link Used to encourage the exchange of direction information from the client\'s presentation module to the Camera Mount. Initiated when the touch screen is squeezed. High information rate to minimize reaction time of the mechanized camera mount. Parallel technique for direction exchange for effortlessness of utilization.

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The transmitter must backing an information rate of: This incorporates any overhead bits connected with the strategy for information exchange utilized (checksum, dreary bits, and so on.) Wireless Coordinate Link Transmitter Specifications

Slide 25

Wireless Coordinate Link Transmitter Specifications LINX Technologies offered the best RF modules suited for the information join. 433-LC Series Transmitter & Receiver 4,800 bps information rate 300 foot max range Surface Mount $ 0.00 (Sampled) 900-HP-II Series Transmitter & Receiver 50,600 bps information rate 1,000 foot max extend Though gap mounting $ 76.29

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Wireless Coordinate Link Transmitter Specifications LINX 433-LC RF Module Characteristics: Serial piece stream 433 MHz Base Frequency CPCA (Carrier-Present Carrier-Absent) "0" = 433 MHz Carrier not recognized "1" = 433 MHz Carrier identified 5 m sec Oscillator settling time Needs extra equipment to bolster parallel information exchange.

Slide 27

Wireless Coordinate Link Encoder/Decoder Specifications Motorola MC145026P (Encoder) and MC145027P (Decoder) give the parallel to serial transformation expected to finish the remote information join. Points of interest: 5 trinary address bits accessible (243 qualities) Encode 4 information bits of information per test. Spares space, one and only information transport required for direction framework. The working recurrence of the chips are completely configurable.

Slide 28

Wireless Coordinate Link Encoder/Decoder Specifications Encoder Decoder

Slide 29

Wireless Coordinate Link Implementation Problem

Slide 30

Wireless Coordinate Link User Module Schematic

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FCC Considerations Code of Federal Regulations (CFR) Section 15.231, Title 47: Governs the 433 MHz recurrence Restricts the utilization of this recurrence to occasional transmissions. Used to hand-off control flags, for example, carport entryway openers, remote switches, and so on. Illicit "toy" recurrence

Slide 32

Wireless Coordinate Link Camera Mount Schematic

Slide 33

Camera Mount System

Slide 34

Camera Mount Pan and Tilt abilities. Full 360 degrees both even and vertical headings. Utilization of two stepper engines interfaced with apparatuses.

Slide 35

Use of Stepper Motors Precision control of position and speed. Programming can decide the definite position at all times. Velocity can be controlled by shifting the time delay between empowering every loop. Disposes of the requirement for criticism. Common dc engines require an input system for precise control. More proficient. Less hardware.

Slide 36

Unipolar Most regular. Does not require extremity of the voltage over every loop to change. Less confounded driver hardware. Effortlessly interfaces to cpu requiring just four I/0 lines for every engine . Bipolar More costly. Requires a converse in voltage extremity over every curl for each other step. More muddled driver hardware. Sorts of Stepper engines

Slide 37

Unipolar Stepper Motor A unipolar stepper engine comprises of four curls made by very two loops every middle drew from to a typical source. To turn the engine, every loop must be invigorated in a specific arrangement called a stage grouping.

Slide 38

Full Step Sequence Less steps per arrangement. Furnish engine with more prominent torque. Less determination as in more degrees per step. Half Step Sequence Double the measure of steps per succession than full step. Less torque. Twofold the determination. Step Sequence

Slide 39

Full Step Sequence Total of four stages in one complete succession. Half Step Sequence Total of eight stages in one complete arrangement.

Slide 40

Camera Motion vertical even flat Move the camera totally level then move totally vertical. Move the camera one stage level then one stage vertical etc. Issue: Number of ventures in the level heading contrasts from the quantity of ventures in the vertical bearing. Arrangement: Determine which line of course has requires a more noteworthy number of Steps. At that point take the proportion of the two numbers. Illustration: Number of flat steps = 12 Number of vertical steps = 4 Ratio 12/4 = 3 Move three even strides for each one vertical stride until wanted camera Position is come to.

Slide 41

AVR MEGA163 Microcontroller 8 bit microcontroller made by ATMEL Co. Memory s

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