Senior Embedded HW/SW Engineer, R&D Electronic Design Responsible, Founder

ACCOMPLISHMENTS
Digital Night Vision Monocular:
Developed a working night vision monocular prototype with OSD (On-Screen Text&Graphic Display), Digital Compass
and GPS and related embedded software. I used 18mm night vision image intensifier tube (IIT) from Harder Digital. We
have glued the core of the camera (described below) to IIT. I have used MAX7456 to overlay text and graphics onto the
PAL video signal. I have overlayed battery level indicator, heading and GPS location and text info and commands




coming from RF unit (from commander). Overlayed video is displayed on a micro display from Emagin technologies for
the user. Objective and eyepieces are outsourced.

Image Intensified CMOS Camera:
Developed electronic hardware and software of an Image Intensified Night Vision Camera. I used NSC1104 image
sensor from New Imaging Technologies. Sensor is capable of producing analog PAL TV signal itself when 8 sync
signals supplied from outside. I used 16-bit PIC microcontroller and assembly language to generate synch signals.
Optics outsourced.

Wireless bootloader:
Developed wireless bootloader software and hardware for PIC24FJ64GA002 microcontroller, and
implemented bootloader into the existing products. This is a small USB module including FTDI serial converter and
IRDA encoder/decoder. You can update firmware from 50cm distance optically.

ACCOMPLISHMENTS

Nano Scale Satellite (10x10x30cm):

1U Attitude Determination and Control System (ADCS): Designed ADCS hardware. ADCS hardware
incorporates Blackfin BF536 CPU, analog and digital front-end for sensors (ADIS16405 IMU, HMR3300
Magnetometer, 6xSun sensor), actuators (3 Axis Magneto-torquer, 4 axis Reaction wheel motor controller), GPS
(SGR-05U without CoCom restriction). Unit was expected to determine satellites position, orientation and speeds and
changes the orientation in order to take the pictures of required regions on earth. Navigational algorithms were
expected to be developed by Ph.D. students but project is shelved. Not tested.

Flight Management On-Board Computer (OBC): Developed Flight Management Board using PIC24H series microcontroller.
OBC also incorporates a cots RF Modem (Astrodev Li-1) for Telemetry andTeleCommands.

Autopilot:
Developed Linux based autopilot hardware and software using Gumstix Overo and Open Embedded Linux framework.
This is an experimental platform for micro UAVs. User can develop his/her own flight control algorithms on Matlab
Simulink and generate C code. Platform enables user to easily integrate Matlab generated C code.

ACCOMPLISMENTS

Autopilot:
Developed and implemented a scalable auto pilot architecture for UAVs and ground vehicles.
* Setup Matlab Simulink real-time targeting development environment for 32bit Freescale MPC55X PowerPC
CPU.
* Developed sensor interface circuits and embedded software for sensor to flight controller communication over
CAN bus. (used sensors: Magnetometer, Barometric Altitude, Air speed, IMU, Laser Range Finder, Ultrasonic Range
Finder)

Mission and Flight Simulator:
Designed and implemented distributed simulator system and developed required software and hardware.
* Artificial Horizon and elementary avionic displays in C#. I used a panel PC with touch screen running winXP for
hardware. Basically it rotates and shift bitmaps according to data coming from the computer that runs flight dynamics.
* USB-Ethernet gateway in C# for USB HID flight controls. Software reads data from game controller like devices and
streams data over UDP to computer running flight dynamics.
* Matlab Simulink models for interfacing FlightGear and airvehicles' dynamic models and flight controls.
* Simulator management console application in C# for managing remote systems and simulation scenario.
* 3 projector back projection system

ITUpSAT1 Pico Satellite:
* Designed Camera payload circuit embedded software for capturing and storing images in SD card to be transmitted
to ground station. Camera module is C328 comedia. An 8 bit PIC microcontroller controls the module from UART and
writes image data to and SD card in SPI mode. Camera provides image data in jpeg format




* Flight management embedded software using Salvo RTOS for sattellite house-keeping and managing
communication with ground station. Flight computer is a COTS board from Pumpkin Inc with MSP430 nanowatt
microcontroller. Software controlls sattellite peripherals (such as: RF modem, antenna mechanisms, beacon, camera
module...) , logs flight data to SD card (to be transmitted later)
* Developed a stand-alone VHF beacon transmitting satellite amateur radio call-sign (TA1KS) satellite tracking.
* Integrated satellite to PSLV C14 rocket in India

First position in company: R&D Engineer. Designed many microcontroller based, battery powered devices for army and
civilian market. Developed a Real-time Operating System in assembly for ST7 series microprocessors. 1999-2004