Rouse Wireless Mouse Glove Seth Martin Andrew Wood Todd Yarrington

What is a Rouse?  A wearable mouse A glove that…A glove that…  Obtains function information  Transmits the information A receiver unit that…A receiver unit that…  Receives the information  Transfers it to the PC as a cursor  A design motivated by a survey

Requirements  Easy to use Motion controlledMotion controlled  Manageable Small size, lightweightSmall size, lightweight  Ergonomic Comfortable, adjustable, breathableComfortable, adjustable, breathable  Wireless  Plug ‘n Play

A Demonstration of Rouse Operation

Input  Output Behavior  Hand movements Hand tilting  cursor movementHand tilting  cursor movement Finger bends  button clicksFinger bends  button clicks  Index  left click  Middle  right click  Pinkie  scroll mode Thumb hold  state changeThumb hold  state change  Idle  Active

System Structure

Transmitter

Accelerometer (ADXL202EB)  Requirements Detect hand motion/tiltDetect hand motion/tilt  Alternatives Tilt SensorTilt Sensor  Cost $49.95$49.95  I/O Behavior Dual-axisDual-axis  X/Y tilting PWM acceleration signalsPWM acceleration signals  Variable duty cycle

Flex Sensors  Requirements Detect finger movements (clicks)Detect finger movements (clicks)  Alternatives AccelerometersAccelerometers  Cost FREE SamplesFREE Samples  I/O Behavior Variable resistance via bendingVariable resistance via bending  75k - 320k

Flex Sensor (cont’d)

RF Transmitter (TWS-434A)  Requirements Wireless data transferWireless data transfer  Alternatives Infrared (IR)Infrared (IR)  Cost $8.50$8.50  I/O Behavior Serial data input lineSerial data input line  2400 bps max. throughput 433MHz AM modulation433MHz AM modulation

PIC18F252  Requirements ADC, 60Hz refresh, small form factor, memoryADC, 60Hz refresh, small form factor, memory  Alternatives Motorola, Other MCUsMotorola, Other MCUs  Cost $8.80$8.80  I/O Behavior Gathers click statusGathers click status  4 ADC pins Decipher tilt statusDecipher tilt status Serial data for transmissionSerial data for transmission

Firmware

Data

Data Packet Structure

Receiver

RF Receiver (RXLC-434)  Requirements Wireless data receptionWireless data reception  Alternatives Infrared (IR)Infrared (IR)  Cost $28.95$28.95  I/O Behavior 433MHz AM demodulation433MHz AM demodulation Serial data lineSerial data line  5000 bps max. data reception

USB Chip (PDIUSBD12)  Requirements Plug & PlayPlug & Play  Alternatives Parallel port, Serial port, PS/2Parallel port, Serial port, PS/2  Cost $59.00$59.00  I/O Behavior Parallel data and address portParallel data and address port  8-bits  Bidirectional Handles signal leveling layersHandles signal leveling layers USB 2.0 CompliantUSB 2.0 Compliant

PIC18F452  Requirements Pins, speed, memoryPins, speed, memory  Alternatives Motorola, Atmel, TIMotorola, Atmel, TI  Cost $9.75$9.75  I/O Behavior Data Packet from receiverData Packet from receiver Updates USB State BuffersUpdates USB State Buffers Sends requested data through D12Sends requested data through D12

Firmware

Complete Budget Breakdown QuantitySupplierUnit PriceCost Transmitter/Receiver PIC18F252I/SP1Digikey$8.80 PIC18F4521Digikey$9.75 Flex Sensors4Spectra Symbol$10.00FREE ADXL202EB accelerometer1Behrend$49.95FREE PDIUSB Kit1USBdeveloper.org$59.00 RXM-433-LC-S1Behrend$28.95 TWS434A1Reynolds Electronics$8.50 Miscellaneous1 $44.34 Shipping1 $21.04 Total $180.38

Future Improvements  Greater RF Bandwidth 2.4/5.8Ghz2.4/5.8Ghz  Battery recharge functionality Receiver  recharge unitReceiver  recharge unit  Aesthetic appearance Smaller footprintSmaller footprint Custom enclosureCustom enclosure

Any Questions?