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Harishpavan
@harishpavan_29
Electrical Engineer
Sri Lanka
Inglês, Tâmil
Sobre mim
I am a dedicated Electrical Engineer with hands-on expertise in PCB design and embedded firmware development. I enjoy taking ideas from concept to reality by creating efficient, reliable schematics and multi-layer PCB layouts using tools like EasyEDA pro and KiCad, while ensuring optimal signal integrity, power efficiency, and manufacturability. On the firmware side, I write clean, robust code in C/C++ for microcontrollers such as STM32, ESP32, and Pico w, implementing communication protocols, real-time control, and power-optimized features.
Habilidades
Harishpavan
offline •
Tempo médio de resposta: 1 hora
Conheça meus serviços
Circuito Impresso (PCB)
I will do professional pcb design schematic and layout in kicad or easyeda
Sistemas Incorporados e IoT
I will do programming for mcu
Experiência profissional
Electronic Engineer trainee
Microchip solutions • Período integral
Nov 2025 - Present • 6 mos
As an experienced PCB designer reviewing this schematic for the MCS IoT Controller Test Board (V1.0), it presents a straightforward test fixture centered around a Raspberry Pi Pico W microcontroller (U1) with its 40-pin breakout for probing GPIO, SPI, I2C, UART, and ADC functions, powered by a robust supply chain including a DC jack (U3), Schottky diode (U2) for reverse polarity protection, a 5V step-down regulator (U5: TSR 1-2450E), and a 3.3V LDO (U4: AMS1117-3.3) with basic decoupling (C1: 100nF). The design incorporates seven TEPT4400 phototransistors (U6-U12) configured as voltage dividers with 10K pull-down resistors (R1-R7) for analog or digital input simulation, a tactile switch (SW2: EVQ22705R) for basic user interaction, and a 0.96-inch OLED display (OLED1: HS96L01W4S03) for output visualization, though many net labels (NET1-NET9) remain unassigned to specific GPIOs, leaving peripherals floating and the overall connectivity incomplete. Test points (TP1-TP6) aid manual debugging, but the board lacks advanced QC features like current sensing for power consumption monitoring, GPIO expansion for full IoT protocol testing, or ESD protection, making it a solid starting point for basic functional verification but requiring refinements for comprehensive quality control of IoT controllers before client shipment.
