Simon Game

VHDL memory game for FPGAs.

Simon Game is a VHDL memory game that displays incremental random sequences on a LED Matrix by creating a finite state machine and implementing RAM and ROM models.

Also, it incorporates a binary to BCD to 7-segment conversion to visualize the current level on the FPGA 7-seg Display.

• Date: May 2019
• Category: VHDL
• Core skills: VHDL and RTL Design, Nexys 4 DDR FPGA, Xilinx ISE, Test Benches, IP Core, Git.


• Source Code: https://github.com/santifs/simon-game-vhdl

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Ultrasonic Car Parking Sensor

Implemented an ultrasonic sensor to measure and visualize distances on the Nexys 4 DDR FPGA 7-seg Display and LEDs.

Incorporated a buzzer that sounds according to proximity by using a single multiplexed clock signal.

• Date: April 2019
• Category: VHDL
• Core skills: VHDL, Nexys 4 DDR FPGA, Xilinx ISE, Test Benches, Buzzer, Ultrasonic sensor.


• Source Code: https://github.com/santifs/ultrasonic-sensor

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Power Distribution PCB

Redesigned and assembled a Power Distribution 4-layer PCB that controlled the power from the battery to all the electrical devices on the racecar.

Delivered up to 12 Amps to each of the 11 outputs with minimum temperature rise, through an in-depth study of PCB layout, trace width and power and ground planes.

Added current and voltage limiting circuits to protect the MSP430 inputs by using Zener diodes and resistors.

Integrated current sensing circuits to collect output power data and send it to a Datalogger via CAN bus.

• Date: May 2017 - September 2018
• Category: PCB Design
• Core skills: Altium Designer, Analog Design, C programming in Code Composer Studio, Saturn PCB Toolkit, MSP430 Microcontroller, SMD soldering, Oscilloscope, Multimeter.

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GUI Temperature Control

Temperature control system with an STM32

Created a Windows GUI to read data from an LM35 temperature sensor and control servos and stepper motors connected to an STM32.

Integrated CAN bus to communicate with other STM32 by using the MCP2515 shield.

• Date: February 2018
• Category: C/C++ and C# programming
• Core skills: C/C++, C#, Visual Studio, Keil IDE, UART/SPI/I2C protocols, STM32 Microcontroller, CAN bus.


• Source Code: https://github.com/santifs/temperature-control

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Digital Piano

Assembly and C program for a Motorola 68k

Developed a program using Assembly and C for a Motorola 68K that makes a buzzer sound in different tones.

Implemented an algorithm to scan a matrix keypad and display the key on a 7-segment display.

• Date: February 2017
• Category: Assembly and C programming
• Core skills: Assembly language, C, Motorola 68K, Embedded Systems.


• Source Code: https://github.com/santifs/digital-piano

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CPU Simulator

Created a C program to simulate and understand a Von Neumann architecture CPU with 8 registers, 16 bits memory, condition flags and program counter register.

Implemented the fetch-decode-execute cycle for 19 instructions by using binary operations.

• Date: February 2015
• Category: C programming
• Core skills: C programming, C-Free IDE, bit masking, CPU architecture.


• Source Code: https://github.com/santifs/cpu-simulator

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