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English
$
USD
I will build esp32, stm32, arduino firmware with ble, iot integration, kicad, esp8266
3.7
3.7
United States
I speak English, German, French, Italian, Danish, Lithuanian, Turkish, Spanish
7 orders completed
Professional PCB Designer, KiCad, Altium, EasyEDA, Circuit and Schematic Expert
Hi, I’m Williams Wai, a PCB designer and electronics engineer with experience in PCB layout, circuit and schematic design, embedded systems, and IoT hardware. I’ve worked on Arduino, ESP32, STM32, and...
Level 1
Has met certain performance criteria and shows strong potential in the marketplace.
Highly Responsive
Known for exceptionally quick replies
About this Gig
Welcome to My ESP32, STM32 & Arduino Firmware Development Gig
Do you need reliable firmware for your ESP32, STM32, or Arduino project? You are in the right place.
I specialize in professional embedded systems and IoT firmware development for smart devices, automation systems, and custom hardware products. My goal is to deliver clean, efficient, and production-ready code that performs reliably in real-world applications.
With strong experience in ESP32, STM32, Arduino, C/C++, BLE, WiFi, and IoT systems, I can help turn your idea into a fully functional embedded solution.
Services I Offer
- ESP32 Firmware Development
- STM32 Embedded Programming
- Arduino Projects & Automation
- BLE & WiFi Communication
- IoT Device Development
- Sensor & Peripheral Integration
- Motor Control Systems
- Driver Development & Debugging
- UART, I2C, SPI & CAN Communication
- API & Cloud Integration
- Hardware & PCB Integration Support
- Embedded System Optimization
What You Will Receive
- Clean and Well-Structured Code
- Stable and Reliable Firmware
- Fully Tested Embedded Solution
- Source Code & Documentation
- Fast Communication
- On-Time Delivery
- Technical Support After Delivery
CONTACT NOW!!!
My Portfolio
Other Electronics Engineering Services I Offer
FAQ
What information do you need to start?
Please share your project idea, features, hardware details and communication requirements.
Which boards do you support?
ESP32, STM32, Arduino, NRF52 and other microcontroller-based boards.
Can you develop BLE and WiFi communication?
Yes, I develop firmware for BLE, Bluetooth and WiFi connectivity.
Can you work with existing firmware or fix bugs?
Yes, I can debug, optimize or improve your existing firmware.
Do you support sensor and peripheral integration?
Yes, I integrate sensors, motors, displays and communication modules.
Is the firmware ready for real hardware deployment?
Yes, I deliver stable and production-ready firmware.
Reviews
3 reviews for this Gig
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| (0) | ||
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| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B bementmr
Germany
Requests fulfilled.
$400-$600
Price
9 days
Duration
O 
Seller's Response
Helpful?A 
armstrongajason
Repeat Client
United States
He delivered the best
Up to $50
Price
2 days
Duration
O Seller's Response
Helpful?M maurizio6973
France
Order Canceled
J'ai transmis un cahier des charges clair, pour la création de Firmware pour mes 2 cartes PCB, tout était ok à priori, mais après m'avoir demandé 1 jour en plus, et des heures en plus, la livraison ne correspond pas du tout à mon cahier des charges. C'est dommage, j'ai perdu du temps. Je dois relancer...
$100-$200
Price
11 days
Duration
O Seller's Response
Helpful?
Reviews
3 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B bementmr
Germany
Requests fulfilled.
$400-$600
Price
9 days
Duration
O Seller's Response
Helpful?A armstrongajason
Repeat Client
United States
He delivered the best
Up to $50
Price
2 days
Duration
O Seller's Response
Helpful?M maurizio6973
France
Order Canceled
J'ai transmis un cahier des charges clair, pour la création de Firmware pour mes 2 cartes PCB, tout était ok à priori, mais après m'avoir demandé 1 jour en plus, et des heures en plus, la livraison ne correspond pas du tout à mon cahier des charges. C'est dommage, j'ai perdu du temps. Je dois relancer...
$100-$200
Price
11 days
Duration
O Seller's Response
Helpful?
