ESP32 MQTT LED Text Display

@shahzaib81829

Hi, I can deliver a clean, reliable ESP32 firmware that subscribes to your MQTT topic, parses JSON payloads, and renders plain text on the LED display with fast updates and automatic reconnection handling. Using Arduino IDE, I’ll keep the loop fully non-blocking, isolate Wi-Fi credentials and pin mappings in a configurable header, and ensure robust reconnect logic for Wi-Fi and MQTT drops. You’ll receive well-commented source code, a concise README with wiring and build steps, and clear proof-of-function showing JSON text received over MQTT and displayed within the required time.

@soniaer987

I can deliver clean, reliable ESP32 firmware that subscribes to your MQTT topic, parses JSON, and displays plain text on the LED display—fast, stable, and non-blocking. Approach 1. Use Arduino IDE or PlatformIO with a proven MQTT library (PubSubClient or AsyncMQTT). 2. Implement robust Wi-Fi + MQTT auto-reconnect with a non-blocking loop. 3. Subscribe to iot_display/application_to_display, parse JSON, extract the text field, and render it clearly on the display. 4. Keep all pins, Wi-Fi credentials, broker details, and topics configurable via a single header/defines file. 5. Add lightweight error handling and watchdog-friendly timing. Deliverables 1. Well-commented ESP32 source code (ready to build/flash). 2. Short README (wiring, topics, build & config steps). 3. Proof of function (serial log or short video/photo showing MQTT JSON → display update). 4. I focus on stability and simplicity so it just works—and keeps working even if the network drops.

@ostronik

Hi Greetings from OSTronik India! We are a technology-driven company specializing in Power Electronics and Embedded System Design integrated with Artificial Intelligence (AI), delivering reliable, industrial-grade Electronic Solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development (C & Python Programming), Hardware Design, Prototyping, and Scalable Mass Production with a focus on quality and cost efficiency. Core Expertise: • Microcontroller : PIC, STM32, ESP Family, AVR, Nuvoton, XBee. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, Keil, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code. • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer, KiCad, with efficient power design, isolation handling, and EMI/EMC compliance. • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485, RS-232. • RF Modules: LoRa, nRF Series, XBee, Laird RF Modules. Project Capabilities: Power Monitoring & Energy Management Units, CNC Controllers, BLDC/DC Motor Control, IoT-based Agriculture, Smart Home & Industrial Automation, Inverters, Stabilizers, and Gimbal-based Videography Control Systems. We have already transformed the concept into a successful Electronic solution for multiple clients. To help you better visualise our expertise, we would be glad to share a brief reference video. Let’s schedule a meeting to discuss further. Best Regards, Team OSTronik India

@vaishnavarjun

I read your requirements and I can easily do this project.  I have 12 years experience in website development  already worked on MQTT I can show you my work and complete it within few hours Please chat for further discussion. Thanks, Arjun