Freelancer logo How It Works Browse Jobs Log In Sign Up Post a Project Profile cover photoundefined
You're now following .
Error following user.
This user does not allow users to follow them.
You are already following this user.
Your membership plan only allows 0 follows. Upgrade here.
Successfully unfollowed user.
Error unfollowing user.
You have successfully recommended
Error recommending user.
Something went wrong. Please refresh the page and try again.
Email successfully verified.
User Avatar
$60 USD / hour
Flag of CHINA
zhongshan, china
$60 USD / hour
It's currently 7:52 AM here
Joined August 18, 2021
1 Recommendation

Yu Liang L.

@zhuhaiclicky

monthly-level-three.svg
5.0 (2 reviews)
5.0
5.0
$60 USD / hour
Flag of CHINA
zhongshan, china
$60 USD / hour
100%
Jobs Completed
100%
On Budget
100%
On Time
N/A
Repeat Hire Rate

Product Engineer | Manufacturer

I am a hardware and firmware engineer and I've designed the electronica and electrical device and develop the MCU firmware. My skills includes - Arduino, STM32, PIC32, AVR, MSP430, Nuvoton, - WiFi, BLE: ESP32, ESP8266, NRF51, NRF52, NRF5340, NRF9160 - GSM/GPRS/GPS: SIM800/SIM900/SIM7000/SIM7600, Quectel, U-Blox - LoRa(SX1276, SX1278, SX1302), Xbee, Z-Wave, - Raspberry Pi, Orange Pi(Allwinner chip), Odroid, Jetson Nano - C/C++, Python, embedded linux, FreeRTOS, Mongoose, ESP-IDF, Zephyr, Yocto, - SPI, I2C, CAN, one-wire, TCP/IP, UDP, Websocket, RS485, mqtt, Modbus, Eth/IP - Internet of Things - PCB Design, PCB Assemble, Altium Designer, EasyEDA, KiCad I have experience in developing the WiFi, BLE, LoRa, 4G/LTE, NB-IoT, GPS, GSM, Zigbee, Z-Wave controllers and sensor meters, medical device, RGB Led Matrix, Motor driver and Controllers. And also developed the embedded linux system and devices. For my clients, I develop the prototype and product in my factory. Based a lot of experience and skills, I can provide the best solution and products for you. You can contact me anytime and I will start working asap. Best regards.
Freelancer C Programmers China

Contact Yu Liang L. about your job

Log in to discuss any details over chat.

Portfolio Items

This is my-own factory. I assemble final products and source mass products worldwide. I can manufacture PCB/Enclosure and assemble it.
Factory
This is my-own factory. I assemble final products and source mass products worldwide. I can manufacture PCB/Enclosure and assemble it.
Factory
This is a BLE/WiFi Router using ESP32 and nRF52832(BT832).
ESP32 BLE Router
This is the sauna controller using the Raspberry Pi CM4 module, which is connected to IoT system. I designed PCB and RPi software, and then  manufactured mass products
Raspberry Pi CM4 Device
STM32 firmware using CubeIDE, MDK 
STM32 PCB design
STM32F4 motor controller
STM32L4 communication board
STM32 PCB and Firmware
STM32 firmware using CubeIDE, MDK 
STM32 PCB design
STM32F4 motor controller
STM32L4 communication board
STM32 PCB and Firmware
NRF52 SDK
Zephyr RTOS
PCB design
nRF52832, nRF52840, nRF5340, nRF9160 development
Nordic BLE Device
NRF52 SDK
Zephyr RTOS
PCB design
nRF52832, nRF52840, nRF5340, nRF9160 development
Nordic BLE Device
NRF52 SDK
Zephyr RTOS
PCB design
nRF52832, nRF52840, nRF5340, nRF9160 development
Nordic BLE Device
ESP32 LoRa Node with GPS
Raspberry pi lora gateway with gps
LoRa Mesh
LoRa gateway and Node

Reviews

Changes saved
Showing 1 - 2 out of 2 reviews
Filter reviews by: 5.0
$2,600.00 USD
I highly highly recommend this freelancer. Very professional. Great Communication and expertise.
C Programming Electronics Verilog / VHDL Microcontroller Electrical Engineering
S
Flag of Peter O. @sunsum777
5 months ago
5.0
€634.00 EUR
We have achieved an excellent result. The milestones were respected in terms of timing and content. And the goals have been achieved
C Programming Electronics Microcontroller Arduino Bluetooth Low Energy (BLE)
User Avatar
Flag of Giuseppe R. @riolabs
1 year ago

Contact Yu Liang L. about your job

Log in to discuss any details over chat.

Verifications

Preferred Freelancer
Identity Verified
Payment Verified
Phone Verified
Email Verified
Facebook Connected

Top Skills

C Programming 2 Electronics 2 Microcontroller 2 Verilog / VHDL 1 Electrical Engineering 1

Browse Similar Freelancers

C Programmers in China
C Programmers
Electronics Engineers
Microcontroller Developers

Browse Similar Showcases

C Programming
Electronics
Microcontroller
Verilog / VHDL
Previous User
Next User
Invite sent successfully!
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2022 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.