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$
USD
I will develop esp32 iot firmware, nrf, ble, hardware prototype
Embedded Systems, FPGA Development, High Speed MultiLayer PCB Design Expert
Hello.
Experienced Hardware and Embedded Systems Engineer with extensive expertise in high-speed multilayer PCB design for RF, FPGA, and SoC-based platforms.
I specialize in developing reliable, prod...
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
What people loved about this freelancer
jonathanmitc601
United States
I was very pleased and impressed by YiLin's subject matter expertise and knowledge regarding my proposed project. He was thorough and timely in delivering the...
moisesn8
United States
YiLin was very exceptional and expert to the job. There was constant communication and the technical updates were very informative and well documented. I felt...
moisesn8
United States
Great work! I really appreciate the effort and commitment to the project. There is high attention to detail and the work is done quickly and efficiently. I...
moisesn8
United States
Excellent service. The project has been broken down into various stages and each stage has come together seamlessly. The overall project has progress smoothly...
About this Gig
Are you looking for a reliable engineer to develop your ESP32-based IoT or embedded solution? I can help you.
I specialize in complete ESP32, NRF, LoRa, GNSS, GSM/LTE hardware + firmware development, including:
What I Offer
- ESP32 firmware development (Arduino, ESP-IDF)
- Wi-Fi, BLE, MQTT, HTTP, WebSocket communication
- Sensor integration (temperature, humidity, gas, motion, etc.)
- Peripheral drivers (UART, I2C, SPI, PWM, ADC, DAC)
- OTA updates, low-power optimization, deep sleep
- Cloud integration (Firebase, AWS IoT)
- Custom ESP32 PCB design (schematic + layout)
- Prototype development & testing
- Debugging, optimization, and code review
Tools & Technologies
- ESP-IDF / Arduino Framework
- Altium
- MQTT, REST API, JSON
- Firebase, AWS, Azure, ThingsBoard
- FreeRTOS
- RS485, Modbus, CAN
Why Choose Me?
- 5+ years of experience in IoT and embedded engineering
- Clean, documented, and modular firmware
- Fast delivery with professional communication
- Complete end-to-end support (Design Firmware PCB Prototype)
Deliverables
- Fully working firmware
- PCB files (if needed: SCH, PCB, Gerber)
- Test results & documentation
- Support after delivery
Feel free to contact me before ordering.
Lets build your ESP32 project together!
My Portfolio
Other Electronics Engineering Services I Offer
FAQ
What do I need to provide to get started?
To give you an accurate quote and timeline, please provide: Detailed Project Requirements: What should the device do? Components List: If you have a specific ESP32 board and sensors in mind. Desired Features: Wi-Fi, Bluetooth, data data display, control buttons.
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M marco8777
Repeat Client
Italy
Outstanding work across two full milestones on a genuinely complex, high-speed PCB design project. Yilin handled every revision with patience and precision — from schematic corrections through the complete PCB layout — including careful attention to trace length matching, differential pair routing, component...
$200-$400
Price
12 days
Duration
W 
Seller's Response
Helpful?J jonathanmitc601
United States
I was very pleased and impressed by YiLin's subject matter expertise and knowledge regarding my proposed project. He was thorough and timely in delivering the proposal and the promised work. I felt very fortunate to have selected him for this project.
$800-$1,000
Price
9 days
Duration
W Seller's Response
Helpful?M 
moisesn8
Repeat Client
United States
The support was exceptional. When we submitted the completed circuit board design and production files the manufacturer let us know there were specific parts not in stock. The necessary parts to complete the full assembly of the MVP were ordered and received with a quick delivery time.
$100-$200
Price
8 days
Duration
W Seller's Response
Helpful?P perchwerks
Repeat Client
United States
really quick turnaround time for an issue plaguing my datalogger project!
Up to $50
Price
2 days
Duration
W Seller's Response
Helpful?M moisesn8
Repeat Client
United States
Excellent service. The project has been broken down into various stages and each stage has come together seamlessly. The overall project has progress smoothly and the outcomes have been very useful to our overall purpose. We are very content with the development effort.
$100-$200
Price
1 day
Duration
W Seller's Response
Helpful?
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M marco8777
Repeat Client
Italy
Outstanding work across two full milestones on a genuinely complex, high-speed PCB design project. Yilin handled every revision with patience and precision — from schematic corrections through the complete PCB layout — including careful attention to trace length matching, differential pair routing, component...
$200-$400
Price
12 days
Duration
W Seller's Response
Helpful?J jonathanmitc601
United States
I was very pleased and impressed by YiLin's subject matter expertise and knowledge regarding my proposed project. He was thorough and timely in delivering the proposal and the promised work. I felt very fortunate to have selected him for this project.
$800-$1,000
Price
9 days
Duration
W Seller's Response
Helpful?M moisesn8
Repeat Client
United States
The support was exceptional. When we submitted the completed circuit board design and production files the manufacturer let us know there were specific parts not in stock. The necessary parts to complete the full assembly of the MVP were ordered and received with a quick delivery time.
$100-$200
Price
8 days
Duration
W Seller's Response
Helpful?P perchwerks
Repeat Client
United States
really quick turnaround time for an issue plaguing my datalogger project!
Up to $50
Price
2 days
Duration
W Seller's Response
Helpful?M moisesn8
Repeat Client
United States
Excellent service. The project has been broken down into various stages and each stage has come together seamlessly. The overall project has progress smoothly and the outcomes have been very useful to our overall purpose. We are very content with the development effort.
$100-$200
Price
1 day
Duration
W Seller's Response
Helpful?
