11-30-2016 Group B Maria-Camila Nuñez (EE) Ramon Jimenez (EE) Mannuel Cortes (EE, CS)
About HINT Cloud Database About HINT Design Overview Module Components Schematics PCBs Difficulties Receiver 1 Successes Receiver 4 Wearable Components Schematics Receiver 2 Receiver 3 PCBs Difficulties Successes Development Budget Questions? Demo Wearable Device A system that makes notification tracking easy, fun, and interactive for the user.
About HINT Goals & Objectives Motivation About HINT Design Overview Module • Internet of Things network • HINT will provide best overall experience Components • Affordability Schematics • Overall positive impact PCBs • User friendly and interactive • Facilitates communication Difficulties • Notification tracking and task learning Successes • Research indicates: • No dependency on smartphones Wearable • Higher self-esteem Components • HINT will enforce tasks • Sense of responsibility Schematics • Successful qualities • Reduce notification bypassing PCBs Difficulties • HINT will stimulate the human senses Successes • Sight Development • Touch Budget Questions? • Hearing Demo
Specifications and Requirements • Requirements were selected by sponsor and further refined by team • Design critical requirements displayed in table as shown About HINT Component Parameter Requirement Design Overview Module Minimum Range 15 ft. Components Wireless Communication Chip RSSI Sensitivity Accuracy +/- 5dB Schematics PCBs Ultrasonic Range Sensor Minimum Detection Range 20 ft. Difficulties Successes LED Pushbutton User Interaction Interface Large & interactive Wearable Speaker Auditory Alerts Tone/voice Components Schematics LCD Display Visual Alerts & Cues Display tasks to be completed PCBs Difficulties Module Circuit Board Maximum Power Consumption 12 W Successes Development Wearable Device Maximum Size 40 mm x 15 mm Budget Maximum Charge Time 3 hrs. Questions? Wearable Power Supply Demo Battery Rechargeable Maximum Power Consumption .05 W Wearable Circuit Board Sensory Output Notifications 2 outputs
Design Overview About HINT Design Overview Module Components Schematics PCBs Difficulties Successes Wearable Components Schematics PCBs Difficulties Successes Development Budget Questions? Demo
How HINT Works Signal Strength Measurement About HINT Design Overview Module Components • HINT uses a combination of RSSI and Schematics PCBs range/motion detection to determine the Difficulties proper conditions to output a notification Successes Wearable • RSSI – Received Signal Strength Indicator Components • Range/motion detection Schematics PCBs • Measured with ultrasonic range sensor Difficulties Successes Development Budget Questions? Demo Time
Work Distribution About HINT Design Overview Module Components Schematics Function Wearable Wearable Range Sensor Module LCD Speaker RSSI Pushbutton MCU PCBs Power Software Integration Software Integration Integration Integration Routing Difficulties Successes Manny Cortes S P P S S P Wearable Components Maria-Camila S P S P S P Schematics Nunez PCBs Difficulties Ramon Jimenez P P S S P S Successes Development Budget Questions? Demo
Module About HINT • Primary job Design Overview • User detection Module • Interactive module Components • Wireless communication Schematics PCBs • Bluetooth Low Energy Difficulties Successes • Detection methods Wearable • Motion sensor Components • RSSI Schematics PCBs • Signal notifications Difficulties • Enable wearable Successes component functions Development Budget Questions? Demo
Power Distribution Range About HINT Sensor Design Overview Module 120VAC Components MAINS LCD Schematics PCBs Difficulties Successes Amplifier 520mA 350mA Wearable 12VDC 5VDC and Components Power Supply Regulator Speaker Schematics PCBs Difficulties LED MCU Successes Pushbutton Development 3.3VDC 150mA Budget Regulator Questions? SD Card Demo Max Current Draws Depicted
Main Components About HINT Design Overview Module Components • Wireless Module Schematics PCBs • Ultrasonic Range Sensor Difficulties Successes • LED Pushbutton Wearable Components • LCD Schematics PCBs • Speaker/Amplifier Difficulties Successes Development Budget Questions? Demo
Wireless Module • Programmable System on Chip (PSoC) module with • Can be programmed/debugged with the Cypress integrated trace antenna, oscillator, and Bluetooth Low MiniProg3 USB kit About HINT Energy (BLE) front end • Mates with Molex connector 022-05-3051 Design Overview • Removes the need for RF PCB design Module • Uses a 32-bit, 48-MHz ARM Cortex-M0 CPU Components Schematics • All necessary pins route to headers J1 and J2 PCBs Wireless Module Difficulties Manufacturer Cypress Semiconductor Successes Wearable Part Number CY8KIT-142 Components Price $9.97 Schematics 44.45mm x 25.4mm Dimensions 44.45mm x 25.4mm PCBs Difficulties Specs • 128 kB Flash Successes • 16 kB SRAM Development • Integrated voltage regulation Budget • 2.4 GHz RF Transceiver • Programmable digital logic Questions? • ADC, DAC, and serial communication Demo blocks • 36 Programmable GPIO pins w/ pull-up and pull-down resistors • Ample development support
Wireless Module About HINT Design Overview Module Components Schematics PCBs Difficulties Successes Wearable Components Schematics PCBs Difficulties Successes Development Budget Questions? Demo Simplified Schematic of BLE Module Interfaces of BLE Module in HINT Design
Ultrasonic Range Sensor • Concept is to be utilized for range and distance MaxBotix LV-MaxSonar – EZ0 calculation About HINT Design Overview • Follows requirement of a broad distance Module detection range Components • Analog voltage pin outputs voltage which Schematics PCBs corresponds to the distance Difficulties Successes Wearable Ultrasonic Range Sensor Components Schematics Manufacturer MaxBotix PCBs • Voltage Scaling • Range Part Number LV-MaxSonar – EZ0 Difficulties Successes Price $26.95 Development Dimensions 22.1mm x 19.9mm Budget Questions? Vm = measured voltage Vcc = supplied voltage Specs •2.5V to 5.5V supply with 2mA typical Ri = range in inches Vi = volts per inch Demo current draw •Three interface output formats •Operates at 42 KHz
Ultrasonic Range Sensor • High sensitivity and wide beam sensor • Detects objects from 0-254 inches About HINT • The beam width is not defined because the actual Design Overview beam width dynamically changes over the course Module of the range Components Schematics PCBs Difficulties Successes Wearable Components Schematics • In case of electrical noise, a power filter was PCBs attached to the Vcc and GND pins in order to help Difficulties mitigate the noise Successes Development • The capacitor value is of low ESR (Equivalent Budget Series Resistance) which increases stability and Questions? load life Demo
LED Pushbutton Sparkfun Big Dome Pushbutton • Follows HINT's purpose About HINT • Concept is to turn on in conjunction with notification on Design Overview LCD display Module • Follows visibility requirement, it is 4 inches in diameter Components Schematics • Reliable and can be easily replaced PCBs • Can be easily “connectorized” and routed to a header Difficulties Successes Wearable Big Dome Pushbutton Components Manufacturer Sparkfun Schematics PCBs Part Number COM-0918 Difficulties Successes Price $10.00 Development Dimensions 4 inches in diameter Budget Questions? Specs •Reliable for 10 million cycles Demo •12V device with internal 460Ω current limiting resistor •5 terminal device with independent LED 2 1 3 and switch circuit
Audio Circuitry • Speaker enforces that notifications will not be ignored About HINT • Synchronizes with all system notifications Design Overview • 8Ω, 0.5W Speaker Module Components • Interfaced through a low-voltage audio amplifier to improve audio quality Schematics PCBs Difficulties Successes General Purpose Speaker Wearable With pins 1 and 8 open, gain = 20 dB Components Schematics Audio Amplifier PCBs Manufacturer Texas Instruments Audio Amplifier Difficulties Successes Part Number LM386 Development Price $1.21 Budget Questions? Dimensions 10mm x 6.35mm Demo Specs •5V part with current draw of 8mA •Applies gain for stronger audio output •Comes in a DIP-8 package
LCD Electronic Assembly DIP162 • The LCD is the only digital output to supplement the sensory I/O About HINT • Gives the specific instructions on the scheduled task Design Overview • 2x16 characters suffices for short task descriptions Module • The simple display doesn’t distract or take away from the sensory aspect Components of the project Schematics PCBs Difficulties Successes Wearable Components LCD Display Schematics Manufacturer Electronic Assembly PCBs Difficulties Part Number EA DIP 162-DN3LW Successes Price $27.26 Development Budget Dimensions 75mm x 27mm Questions? Specs •5V part with 45 mA current draw Demo (including backlighting) •DIP module •Has 8 or 4-bit interface for easy
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