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I will write esp32 or arduino firmware for your wifi, ble and sensor project
Joel James
5.0
5.0
About this gig
Stuck on an Arduino or ESP32 project? I write clean, well-tested firmware for ESP32, ESP8266 and Arduino boards so your hardware idea actually works.
I've built IoT systems with WiFi, MQTT, multiple sensors and real-time data logging, so I know what works on real hardware, not just in simulation.
What I can do:
- Sensors: DHT, ultrasonic, IR, MPU6050, BME280, OLED and LCD displays
- Communication: UART, I2C, SPI, WiFi, Bluetooth / BLE
- IoT platforms: MQTT brokers, ThingSpeak, Blynk, Firebase
- Motor, servo, relay and LED control
- Low-power and deep-sleep designs
- Debugging and cleaning up existing code
Every delivery includes commented .ino or .c/.cpp files, a wiring diagram or pin table, and short instructions to run it.
Not sure if your project fits? Message me your board, sensors and what the device should do, and I'll give you a straight answer.
Get to know Joel James
Joel James
Python, Embedded C and Verilog developer for hire
- FromIndia
- Member sinceSep 2025
- Last delivery6 months
Languages
English
Hi, I'm Joel — an Electronics & CS engineering student with hands-on experience in Python automation, embedded systems, and FPGA/Verilog design.
I've built web scrapers, data processing scripts, Arduino and ESP32 IoT projects, and Verilog modules for real hardware targets. I know what it's like to be a student working on tight deadlines — so I keep my communication clear and my deliverables clean.
Whether you need a Python script that saves you hours, an embedded project done right, or Verilog code that actually synthesizes — I've got you covered.
Let's build something.
FAQ
What hardware information do you need to get started?
Just tell me your board model and sensor model numbers. I don't need the physical hardware — I write and test the code based on datasheets and specifications.
Will the code work directly on my board?
Yes — I write for your specific hardware. If something doesn't work after uploading, message me and I'll fix it free of charge.
Can you help debug existing code that isn't working?
Yes — send me your code and describe what's going wrong. I can debug and fix it, just select the appropriate package based on complexity.
Do you support other microcontrollers besides Arduino and ESP32?
I primarily work with Arduino and ESP32 but can also help with STM32 and other ARM-based boards. Message me with your specific board before ordering.
Reviews
1 reviews for this Gig
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Rating Breakdown
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P pierrenivet
France
Joel did fast and amazing job on this project! I recommend him at 10000 % !!! Very professional, nice communication, very available during work and even after. Can't wait to work with him again for my future projects !
$50
Price
4 days
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
P pierrenivet
France
Joel did fast and amazing job on this project! I recommend him at 10000 % !!! Very professional, nice communication, very available during work and even after. Can't wait to work with him again for my future projects !
$50
Price
4 days
Duration
Helpful?
