I manage countless project during my 4 years professional careers. I have experience working with various hardware platform (PCB Design and Firmware using C/C++, Python, FreeRTOS):

1. Microcontrollers (Arduino, STM32, ESP32, NRF, Ai Thinker)
2. DSP TI
3. FPGA (Xilinx and Alterra)
4. RaspberryPi
5. IntelNUC

As a PCB Designer, I use several CAD tools like Altium Designer, Kicad, Eagle, Proteus, EasyEDA, Designspark for PCB design and LTSpice for analysis. These are some examples of my PCB design based on classification:

1. RF/Analog PCB Design

• LTE smallcell eNB Front End PCB (5 Watt Power Amplifier and 30dB LNA on band 8)
• Wimax CPE Front End PCB (1 Watt Power Amplifier, 30 dB LNA, and switch on 3.3GHz)
• Portable Signal Analyzer (High Speed ADC 12-Bit 65 MSPS)
• Various wireless transceiver PCB modules(GSM, NB-IoT, LoRA, WIFI, Bluetooth, GPS)

2. High Speed signal

• SDRAM 128 Mbit board
• Ethernet LAN91C111 board

3. Complex design (BGA IC, 6 Layer PCB)

• FPGA Xilinx Spartan 6 XC6SLX150
• Intel Galileo (Intel Quark SOC X1000)

4. High Power Electronics

• Batching Plant industrial controller (interfacing with Relay, Opto TRIAC, Contactor)

5. Microcontroller and IoT

• Arduino ATmega Family (Early warning system, electronic books)
• ESP/ESP32 Family (Smart Streetlamp, bikesharing, Agriculture controller)
• STM32 Family (TV Rating devices, Smart Home)

Job description:

1. Strategic Planner, decide vision and technology roadmap for company.
2. Lead RnD team to work efficiently and ensure project delivery according to requirements and specifications
3. Explain and communicate company product/technology to client and all of stake holder
4. Learn and adopting recent technology for company benefit
5. Electronics hardware engineer. Designing schematic and PCB layout, testing, and production.Job description: 1. Strategic Planner, decide vision and technology roadmap for company. 2. Lead RnD team to work efficiently and ensure project delivery according to requirements and specifications 3. Explain and communicate company product/technology to client and all of stake holder 4. Learn and adopting recent technology for company benefit 5. Electronics hardware engineer. Designing schematic and PCB layout, testing, and production. Skills: ESP32 Microcontrollers · STM32 · Mqtt · Analog Circuit Design · Real-Time Operating Systems (RTOS) · Electronics · Telecommunications · Electronic Circuit Design · Business Forecasting · Software Project Management · Project Planning · Project Coordination · Information Technology · Project Implementation · Technical Leadership · Strategic Planning · Electronics Hardware Design · C/C++ · Project Management · Production Management · Internet of Things (IoT)

PCB designer and embedded system programmer using C/C++, Python). Including electronic product mass production knowledge (supply chain, design for test (DFT), design for manufacture (DFM), PCB test jig design, PCB production and assembly process).

I have a deep knowledge on electronic circuit analysis and component (passive, active, power, protection, sensor). Experience on writing firmware for embedded system/microcontroller AT Mega Arduino based, ESP/ESP32 (WIFI and BLE), STM32, and RaspberryPi.

Latest Electronics Hardware project:

1. Smart Water Meter (2022 ongoing), main specifications:

• Based on ESP32 microcontroller
• Battery powered with 4 year life expectancy
• NB-IoT as primary connectivity using MQTT protocol.
• Ultrasonic sensor.

2. Coffee Vending Machine (2022)

• Based on ESP32 microcontroller and NUC miniPC.

3. Smart Street Lighting (2021-2022)

• Based on ESP32 microcontroller.
• Measure voltage and current consumption
• NB-IoT as primary connectivity using MQTT protocol.
• 0-10V/1-10V dimming standard

4. AI Fruit Sorting Machine (2021)

• Based on RaspberryPi and NUC miniPC.
• Grading fruit based on quality using AI
• Based on YoloV5

5. Batching Plant Industrial Controller (2021)

• Based on STM32 microcontroller and NUC miniPC.
• Interfacing with weight sensor and high power system using opto TRIAC and Relay
• Automatic concrete production
• Integrate with ERP system

6. Bike sharing system (2021)

• Based on STM32 microcontroller.
• Integrate with digital Payment

7. Early warning System (2021)

• Based on ATMega328p microcontroller
• Earthquake sensor using D7S omron sensor
• Flood Sensor using LIDAR
• landslide Sensor using gyrometer, accelerometer, vibration, and soil humidity sensor.

Various measurement tools I'm familiar with are:

• Oscilloscope
• Signal Analyzer
• Spectrum Analyzer (spurious, EMI, bandwidth measurement)
• Vector Network Analyzer (S11, S21 measurement)
• Logic analyzer