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PROJECTS

DIGITAL RECEIPT SYSTEM VIA NFC (in progress)

  • Transfers a receipt from a POS terminal to your phone via NFC.

  • Reduces the need for paper receipts at checkout.

  • Implementation uses Raspberry Pi Pico using FreeRTOS and OM5577 (PN7120) NFC controller module (with custom designed interface board)

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SERVER-BASED STATE LOGIC ELEVATOR CONTROLLER

  • Designed and implemented a multi-story elevator controller accessed and controlled via web interface.

  • User commands are securely sent to server (Raspberry Pi) running MySQL, back-end uses state logic to determine elevator destination.

  • Real-time elevator monitoring information displayed on UI.

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WIFI CONTROLLED ROBOT

  • Designed and fabricated a micro-controller based embedded system (ARM Cortex-M4 on custom PCB).

  • Robot is capable of a being controlled via wireless controller and/or automated robotic system.

  • Implemented fully customizable PID controls.

  • System includes RS232, CAN bus, SPI and I2C interfacing, TCP/IP socket programming, ADC and DAC, and the operation of motors (stepper, DC, servo), and an LCD display.

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EMBEDDED CONTROLLER BOARD

  • The board's intended purpose is to be used as the heart of the WiFi Controlled Robot project.

  • It exposes the peripherals of the STM32F303 board, allowing full utilization of hardware peripherals.

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CODED MESSAGING SYSTEM

  • Allows two computers within the same building to communicate without LAN or internet access!

  • Uses PSK modulation circuitry to communicate via household wiring instead.

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AUDIO AMPLIFIER (15W)

  • Designed an AC-DC converter to power the amplifier from typical 120VAC.

  • Assembled audio amplifier board and optimized components for best performance.

  • Crafted the mechanical chassis with external switches and ports.

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ROAD TRAFFIC VIBRATION SENSOR

  • System is capable of detecting ground vibration caused by passing traffic and generate a graphical representation of results.

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ANALOG MULTIMETER

  • Designed analog multimeter which is capable of measuring voltage, current, resistance, and magnetic field intensity.

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ROLLING LED DISPLAY

  • Designed hardware and software for rolling LED that displays text in a left-to-right fashion (like a marquee).

  • Uses Axman board as main micro-controller.

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