Hiep L.

Hello world!!! My name is Hiep, I am an embedded hardware design engineer. My expertise is designing hardware circuits, assembling, and testing the quality of the circuit. Give me your requirements or your product specification, and then we can discuss the timeline, cost, and how we can work together. Also, I have more than +9200 working hours, 100% Job Success on Upwork, and more than 8 years of experience in designing hardware for IoT Products, Consumer Products, and Edge devices, so I think I can use my experience to complete your project with the best result. + MY WORKFLOW: - Receive your detailed requirements or specifications, discuss what you want and what I need to do. - Design block diagram for the circuit: needs to be very detailed, it will decide what part will be used in the project. - Design schematics: follow the block diagram to design the schematic for the product. - Design PCB Layout: with requirements about Mechanical Design and Industrial Design, I will do the PCB Layout to fit with your Mechanical Design to achieve the best performance. - Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ... + MY TECHNICAL EXPERIENCES: - SoC/ MCU: STM32F0/F1/F2/F4/F7/H7, STM32L1/L4, MSP430, MSP432, ATMEGA, ATSAM, PIC, ESP8266, ESP32, CC2530, CC2538, nRF52810/ nRF51822/ nRF52832/ nRF52840/ nRF5340, ... - Sensor: light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, IMU sensor, Accelero, Gyro sensor. - Biosensor SPO2/PPG (OB1203, MAX32664 sensor hub, MAX86176, MAX86178, AFE4950…), Skin temperature (AS6221, MAX30205, MAX30208), ECG (ADS1292, ADS1293, ADS1294, ADS1298, MAX86150, MAX30003,…), Heart rate, Blood pressure,... - True wireless earbuds, headsets and speakers, Bluetooth ® LE Audio standard from Qualcomm: QCC5141, QCC5171, QCC5181,... - Wireless communication: DA16200 BLE MCU, WiFi, BLE4.0/4.1/5.2, Lora, Zigbee, NFC, eSIM, GNSS/GPRS/4G/LTE Module: SIM900A, SIM908, Quectel MC60/M95/EG91x, SIM7600, SIM7080, SIM7090G... - Digital and high-speed electronics design: - Memories DDRx/LPDDRx, SDRAM, Camera and display interfaces (MIPI-DSI, MIPI-CSI, DisplayPort, etc), Data communication interfaces (QSPI, SPI, UART, I2C, FMC, I2S, USB 2/3.x, etc), ( - RF Designs: 1-6 GHz (UWB, Wifi, BLE, ZigBee, GPS, NB-IoT, LTE-M/LTE, Z-Wave, etc), 13,6 MHz, 128 kHz (NFC, RFID, etc), 433 MHz (Custom protocols). - Some industry circuits: Modbus, voltage to current/current to voltage converter, isolation interface, current/voltage measurement,… - Ultra-low power consumption device hardware developments: Ultra-low locker using non-rechargeable battery with life-span of up to 10 years, some wireless devices with 2 years operation with 620mAh battery,… - Power electronics: wireless charger, high power PD charger, BMS, PMIC, OV/OC/UV, high current PCB (30 – 100A),… - Mass Production: Discussing, processing steps, and managing the manufacturing process of PCBs, PCBAs, and assembly devices, processes in production include: discussing with the bare PCB factory, building self-test documents, production testing PCBAs at the factory, documenting and testing, and managing the device testing process after assembling the device. - Tools: Altium Designer (Altium365/CircuitMarker), KiCAD, Eagle, EasyEDA; OrCAD, PSpice, CAM350. - Prototyping: Experience with BOM creation (Digikey/Mouser/JLCPCB) and combining dimensional drawings into precise Gerber formats. - CAD/3D design tool: SolidWorks, Inventor... + Some of the products that I have designed and released to the market: - IoT products: Wearable devices tracking the biological index, Devices control hub over Wifi, Internet, Bluetooth, OBD devices,... - Smart Home Product: Design Home Gateway with Ethernet, WiFi, Zigbee, TFT LCD, ... Design Smart Switch with capacitive touch, Zigbee communication, 220VAC/110VAC load control, ... - Tracking Device: Using 3G/4G with GPS, this device is used for personal tracking ... and a lot of other products ... I hope to work with you, to help you complete your project and release your product to the market Best regards Hiep Le