Xianghu M. Profile

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Electrical Engineering

Electronics

Microcontroller

PCB Design and Layout

PCB Layout

4.8

(5 reviews)

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$20 USD / hour

beijing,

china

$20 USD / hour

It's currently 9:24 AM here

Joined May 7, 2020

1 Recommendation

Xianghu M.

@lsjlsj04127

4.8

(5 reviews)

5.2

75%

$20 USD / hour

beijing,

china

$20 USD / hour

80%

Jobs Completed

100%

On Budget

100%

On Time

17%

Repeat Hire Rate

Embedded Expert & PCB designer

Thank you visit my profile page. My main skill is embedded engineering and PCB design and web front-end developer.. I have 10+ years experience in designing embedded system,webservice. Technical area : PCB Design: Altium Desinger, Eagle, Orcad..etc. ARM : Cortex-A Series arm chips such as V3s, S3, A33, A20. Exynos 4412, 4418, RK3399, RK1108 and so on. Embedded Linux Kernel, Drivers, File System MicroChips : ARM Cortex-M, ARM9 chips such as STM32, STM8 ATMEL, PIC, 8051 microchips programming WIFI and Bluetooth : ESP32, ESP8266, nRF52832, nRF840, CC2541 Embedded Communication : UART, SPI, I2C, CAN and so on. USB Drivers : USB-CDC, USB-MSD, USB-WIFI and so on IoT Development : Smart Switch, Smart Lock PCB : High speed signal wiring, Electrical Power Wiring and so on. Web Service: HTML, PHP,Javascript. Thank you.

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Portfolio Items

- Features:
 DC motor control
 3 High current lights switching
 Remote control and monitoring via WiFi
- Tech specs:
 WiFi Module: ESP_12_E
 Interfaces: DC motor, 3 lights
 Programming and Debug: UART
 Boot mode selection: Flash mode/UART download
 Power: DC12V
- Main Skills:
 2-layer PCB design using Altium Designer
 Small size compact design matched in existing case
 High current circuit design
 ESP8266 firmware development

WiFi Motor Control Board

- Features:
 2 Boards in 1 case: Main board and Sensor interface board
 Sensor data transmission and remote control via Cellular
 Precise GPS location tracking
 Multiple sensor data collecting and processing
 External DC or solar power charging
 Water resist case for outside operation
- Tech specs:
 Processor: Intel® Edison Compute Module
The Intel® Edison compute module is designed to lower the barriers to entry for anyone prototyping and producing IoT and wearable computing products.
 Skywire™ HSPA+ HE910 Embedded Cellular Modem: NL-SW-HSPAPG (800/850, AWS1700, 1900 & GPS )
 Interfaces: 18 for digital, 6 for analog, 4 for PWM, plus UART, SPI and TWI (I2C)
 Analog Input Pin: 12-bit 1MSPS 8 channel ADC
 3.5mm Stereo Jack: 5 for Decagon 5TE Sensor interface, 2 for standard analog input
 Programming and Debug: USB to UART debug port
 Power: DC 7~15V or 3.7 LiPo battery
 Charging: Solar charge controller, up to 1500mA charge current
 LED: RGB LED
 USB: MicroUSB port fo

Cellular Multi-Sensor Data Controller

Visual Studio 2019
.Net Framework
C# Form Application
USB-SPI/I2C Communication

Desktop Application

BLE application

uboot
Several Custom Drivers
MiniGUI Graphics, User Interface
Embedded FileSystem

CPU : S3, V3s, RV1108 and so on

Linux Kernel

Camera : OV2640, GC0308, GC0328
Protocol : MQTT, HTTP-POST
Board : ESP32-Cam

Power : USB power supply

ESP32 Camera Application

Reviews

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0.0

$20.00 USD

Schematics and PCB layout design

The project is not completed according to the dispute

Electronics

Microcontroller

Electrical Engineering

PCB Layout

Circuit Design

Michael J.

@Mcjinkz

•

7 months ago

4.6

$2,550.00 CAD

Allwinner A64 firmware development

Xianghu is very versatile and was able to help us with our project effectively. He was able to develop or fix the firmware for the following: 1) OV5640 camera for Allwinner A64 processor 2) GT911 based touch panel for Allwinner A64 processor 3) A light sensor for an STM32 family processor 4) A camera ON led indicator for the STM32 processor