iLab Final Presentation EE 496 May 4, 2007

Members Ka Hing Chan – Male – Age 21 Nana Kim – Female – Age 22 Chong Quach – Female – Age 40

Overview of Project Objective: to design an affordable and space efficient all-in-one laboratory device. Device will include: – Power Supply – Function Generator – Oscilloscope – Spectrum Analyzer – DMM

Initial Goals Build Generator portion – Provide adjustable DC power ranging from -20V to +20V – Generate sine, square, triangle waves w/ adjustable frequency and amplitude (10 Vpp max) Push buttons to adjust features to test accuracy and precision

Overall Design

Decisions Made Number of outputs – 5 DC outputs (2 fixed pos and neg ports, 1 GND) – 2 Analog wave outputs Direct Digital Synthesizer (AD9833) vs. PSoC Transformer vs. DC-DC converter Buy C Compiler vs. Free Assembly Code

Structure (Generator) USB SPI Analog Waveform DC PSoC (CY8C29xxx) DDS (AD9833) Positive Negative USB Host/Client MAX3421E DDS (AD9833)

Design Tools PSoC DesignerPCB Express

Current Status Received all chips Completed circuit design Setup SPI in PSoC Designer

Problems Time!!!!! Limited Resources PSoC Assembly Language Lack of $$$$ – C Compiler = empty wallet – PCB Boards = arm + leg – Error in PCB Boards = Incomplete Grade

To Do List Re-order PCB boards Test Chips Design command procedure and language

Future Improvements More time in development stage – Explore options before committing Better time management – Follow and commit to timeline Use Design Notebook – Makes writing paper easier

Have a Great Summer!!!! Questions?