SmartThink Remote System

1. SmartThink Remote System Team Cyclops Justin Bewley Winter Jojola Florence Manega Paul Roberts Denknesh Temesgen

2. Introduction • SmartThink Remote System • Designed for people with disabilities • Aids in performing everyday tasks • Controls television set • Controls objects attached to SmartThink adapters  

3. Conceptual Design • Infra Red transmission • Line of sight + 10 degrees • Learns Pre-programmed IR codes   • Incorporates an LED array attached to a target CPU • LEDs correspond to state of FPGA state machine  

4. Conceptual Design continued… • Head mounting • Digital compass • Imitate head motion • Inclinometers • Levels; determine vertical angle of sight

5. Description of working system • Motherboard • Microcontroller • FPGA • Memory • IR Transmission • Tx / Rx • Adapter • Sip/Puff Switch • Button Switch • Software

6. Overview Block Diagram

7. Motherboard

8. Micro-controller Shown below is the MC68HC11, with the clock (8MHz) and reset button

9. Schematics continued Driver for the address and data (MC74HC245) latch for the data (MM74C373)

10. Schematics continued Below is the schematics for the ROM and RAM

11. FPGA - Spartan

12. State Machine

13. IR Transmission

14. IR Reception • Television Set • Adaptor to go on other devices, i.e. fan • Regulated by 120Vac. • Processor checks for IR codes • Relay switches power flow to peripheral device

15. Sip/Puff Switch • Origin Instruments, Corporation • Zero-Power Design, No AC Plug and No Batteries • The metal switch box contains the devices that convert sips & puffs to electrical switch closures • Switch events are accessed from the 1/8" microphone connectors on the end panel • Switches are designed for low current electronic loads • Retail: $295.00

16. Memory Map

17. Software Breakdown • Interrupt from XCS10 • Serial Data Out • Serial Data In • Find open slot for data

18. Interrupt from XCS10 • (State is latched to data bus from XCS10) • Processor reads in state from data bus • Based on state, read in from appropriate flash memory preset location (SPI) • Send data across Serial TX until signal is complete (SCI) • Send data out serially

19. Serial Data Out(memory addr. Z) • For(I = 0; I < IR signal length; I++) • Gather memory byte from Z+I • Send data along serial line

20. Serial Data In(void) • For(I = 0; I < IR sig. Len; I++) • Put memory byte from serial line into location $TEMP+I • Find open pre-selected data space->Y • If(Y == ERROR) • Memory space all used up, flash ERROR • Zero out memory space @ Temp • Else, move memory from TEMP to Y

21. Find open data space(void) • Based on config byte at 0x0000, find open space in memory for new code (0 = mem in use) (1 = mem open) • If no open space, return ERROR • If there is an open space, return which space and declare the space used

22. Parts List • Motherboard • HC11 • Spartan XCS10 • IR • TX-IR (Control chip) • 4MHz (Resonator) • ZTX601 (Darlington circuit) • IR LED (+ 10 deg high power) • TSOP-1140 (IR receiver) • MAX223CPP (DIP-drives voltage to 12V) • PIC 16C84-04 (Controller for adapter)

23. Parts List Continued • Switches • Sip / Puff • Buttons • Misc • Batteries • 12 Vdc 4Ah NiMH (2) • Servos • Hitec Hobby Servos (2)

24. Schedule

25. Milestone 1 • Boot up HC11 • FPGA Runs Basic Logic • State Machine Logic Encoded • Transmitter/Receiver Hardware Built

26. Milestone 2 • FPGA Debugged and Working • Read/Write to RAM • IR Signals Can be Learned • Switches Interfaced with FPGA

27. Division of Labor • Motherboard – Winter, Justin, Denknesh • IR – Paul, Florence, Justin • Sip/Puff – Florence, Denknesh • Boot Code – Paul • User Manual - Winter • Technical Reference Manual - Everyone

28. Questions?