Adelson Duarte Dos Santos

Responsible for design of analog circuits for an optical sensor based device. Circuits simulated (LTSPICE-TINA) and designed (KiCad) using schematics and 4-layer PCB layout: Transimpedance amplifier; Voltage amplifier; Peak detector; Li-ion battery based power unit; Boost converter and charge pump; Firmware development for MSM0 family using the following peripherals: SAR ADC (1MS/s) and 8-bit DAC; Comparator; 16-bit Timer; DMA/Event; Testing and troubleshooting using electronic laboratory instruments. System troubleshooting and documentation;

Responsible for designing a reconfigurable multisensor based on PCB technology for precision agriculture. Circuits simulated (LTSPICE) and implemented (KiCad) using schematics and 4-layer PCB layout: Oscillators and reference voltages; Frequency to voltage converter; Current source; Differential amplifier; A dynamic wheatstone bridge; Firmware development for MSP430 microcontroller using the following peripherals: Sigma-delta ADC; 16-bit Timer; UART; HW interruption; I also participated in the teaching assistant program at UNICAMP, where I was an assistant in Electronics I (Theory), Applied Electronics (Theory) and Applied Electronics (Laboratory).

Developed an embedded system for reading differential encoder applied to biomechanics. Hardware design: schematic and 2-layer PCB layout (KiCad); Circuit implemented: analog filtering; STM32 microcontroller peripherals: 16-bit timer, USART;

Conducted literature reviews, authored technical reports, designed and tested product concepts, developed experiments for power management, validated prototypes, and collaborated on designing energy-efficient, battery-free wireless sensor networks and measurement devices. Circuit implemented: Thermoelectric energy harvesting interface; Power management unit (dc/dc converter supercaps, LDO); Hardware design: schematic and 2-layer PCB layout (KiCad);

Circuits implemented: Transistor based on-off keying (OOK) modulator; Transistor based on-off keying (OOK) demodulator; Flyback converter; 3 phase voltage and current readout circuit; Firmware development for MSP430 family using the following peripherals: Sigma-delta ADC PWM 16-bitTimer UART Hardware design: schematic and 2-layer PCB layout (Altium); Responsible for designing a network of energy consumption measurement devices based on power line communication as a potential solution for reducing blind spots in wireless sensor networks.

Software development using C# language and SQL database programming for electronic payment system

Development of scripts for electronic payment solution tests

Software tests of electronic payment systems (Point of Sale Transactions - POS)

Electrical panels and electronic circuit boards maintenance.

Graduate courses: MOS Device theory, manufacturing, and Characterization; Introduction to Electromagnetic Compatibility; Introduction to RF microelectronic circuits; Switched-mode power supply; Scientific Writing in English; Dept. of Electronics and Biomedical Engineering (DEEB)

Dept. of Electronics and Biomedical Engineering (DEEB) Master's Project: Smart system for measuring electric consumption based on Power Line Communication.

Final project: pharmaceutical distribution system. Main activities: development of an embedded application for controlling medication supply. Other activities: teaching assistant in the subjects of communication principles and computer architecture.