I will develop esp32 iot firmware with mqtt, sensors and dashboard

Do you have an IoT device or an idea that needs firmware? I can build it.

I develop embedded firmware for ESP32 / ESP32-S3 and connect it to the real world sensors, displays, relays, RFID/NFC, and MQTT messaging to a backend or dashboard.

Recently I built a production-grade automation system: ESP32-S3 firmware handling NFC card reading, OLED display, relay control, and real-time MQTT communication validated against 1.27 million real transactions with hundreds of automated tests.

WHAT I CAN DO FOR YOU:

- ESP32 / ESP32-S3 firmware from scratch

- MQTT communication (device to server/dashboard)

- Sensor integration (temperature, level, motion, distance, etc.)

- Displays (OLED), RFID/NFC readers, relay & motor control

- WiFi / Ethernet connectivity with reconnection & fallback logic

- Python backend + REST API to support your device

- Clean, documented, maintainable code

WHY ME:

I work across the full stack firmware, backend, and dashboard so I understand how your device fits into the bigger system, not just the chip.

Please message me before ordering with your project details, and I'll tell you honestly which package fits and whether it's a good match.