The UD3TS01 is more than just a development board; with our latest v5.5 Firmware, it's a consumer-ready IoT appliance designed to integrate seamlessly into your smart home. Whether you're monitoring a server rack, a greenhouse, a brewing rig, or just your living room, this hub delivers professional-grade data with zero hassle.

🚀 Why This Board?

Most DIY sensors require hours of coding, flashing, and YAML configuration. Not this one. The UD3TS01 comes pre-loaded with advanced firmware that handles everything for you. Power it up, connect to WiFi via the captive portal, and it automatically detectable to SmartThings. For Home Assistant you just need to know the IP address and if it is running MQTT.

✨ Firmware Features (The Secret Sauce)

• Home Assistant Auto-Discovery: No more manual YAML! The device automatically registers its sensors with Home Assistant (with correct icons and Smart Unit Conversion) via MQTT.
• SmartThings Ready: Official Edge Driver support for Local Execution. Auto-discovers devices on your network and handles 1-8 sensors dynamically—no cloud required.
• Beautiful Web Dashboard: A modern, responsive Web UI with Dark/Light Mode, real-time sensor status, and device diagnostics.
• Interactive Charts: View historical temperature trends directly on the device's Web UI up to 5 hours of temperature readings.
• Smart Networking:
  • Captive Portal for easy WiFi setup (no coding needed).
  • mDNS Support: Access via http://UD3TS01-XXYY.local.
  • Dual MQTT: Send data to Home Assistant and a generic broker simultaneously.
• Enterprise Integrations:
  • Prometheus metrics endpoint.
  • Webhooks & IFTTT support for custom automations.
  • JSON APIs for developers.
• Robust: Automatic sensor calibration, safe-mode boot, and OTA (Over-the-Air) update capability via the web browser.

🛠️ Hardware Specifications

Designed for reliability and ease of use.

• Core: ESP8266 (ESP-01/01S)
• Display: Crisp 0.96" OLED (128x64) showing IP, Status, and Live Readings.
• Sensors: Supports up to 8x DS18B20 OneWire temperature sensors (3x onboard terminals, expandable via daisy-chain).
• Power: USB-C (5V) OR External Terminal (4.5V-6V).
  • Note: Use only one power source at a time.
• Expansion: I2C Breakout (SDA/SCL/3V3/GND) for adding extra sensors if you were to flash your own firmware.

📦 What's Included?

Fully Assembled & Tested: 1x UD3TS01 PCB (Black finish) 1x ESP-01 Module (Pre-flashed with v5.5.50+ Firmware) 1x 0.96" OLED Display 3x DS18B20 Waterproof Sensors (1m length)

Ready to run out of the box. Just add power!

👨‍💻 For Developers

While the firmware is proprietary/closed-source to ensure a polished user experience, the hardware is hacker-friendly. The ESP-01 is not locked, so you are free to flash your own code (ESPHome, Tasmota, Arduino) if you prefer total control.

Get the professional IoT experience without the DIY headache.