Sensor Playground Live

Sensor Playground turns your phone into a live dashboard for DIY sensor nodes built on the ESP32 or a Raspberry Pi class single-board computer. Flash the free companion firmware from GitHub onto your board, wire up a supported sensor, and the app finds the node automatically per UDP Discovery Broadcast on your local network or via Bluetooth LE — no cloud, no account, no registration. Readings appear as clear cards and live charts, updated in real time. 🌟 HIGHLIGHTS • Automatic discovery of sensor nodes over Wi-Fi (LAN) and Bluetooth LE • Live cards and charts for every measured quantity • Air-quality rating derived from IAQ, CO₂ or eCO₂/TVOC readings • Dedicated screens for gesture, distance and contact sensors • Live MJPEG camera view with picture controls for the ESP32-CAM • Send bitmaps to an SSD1306 OLED display node and switch an LED node on and off • Signal-strength badge for Bluetooth nodes • °C/°F switch, English, German and Polish • Everything stays on your own network: TLS-encrypted and API-key protected — no cloud involved ✅ SUPPORTED SENSORS • Environment & air quality: BME680, BME280, BMP085/BMP180, SCD30, SGP30, MCP9808, SHT11, SHT31, SHT41, AHT10/AHT20, DHT11, DHT22, CozIR-A, PPD42NS dust/particle sensor • Light & optical: SI1145 (sunlight/UV), TSL2591 (lux), TCS34725 (color), ISL29125 (RGB), analog light sensor • Soil: capacitive moisture sensor (corrosion-resistant probe), Chirp I2C soil moisture sensor (moisture, temperature, light) • Motion & orientation: IMU 10DOF, MPU6050, MMA7660 • Infrared temperature: MLX90615 (non-contact) • Positioning: Air530 GNSS/GPS • Event-driven: PAJ7620 gesture, VL53L0X laser distance, Grove ultrasonic ranger, 125KHz RFID reader, NFC tag (shows what your phone writes to it), button, hall sensor, magnetic switch, PIR motion, vibration, line finder • Input & control: rotary angle knob, LED node (switch from the app, see its state live), Grove SPDT relay boards with 1, 2 or 4 channels (one button per channel, the node reports how many it has) • Sound: Grove speaker (play notes and a melody from the app) • Storage: AT24C128 EEPROM (store a text from the app, read it back any time) • Camera: ESP32-CAM live video stream, HTTP, WS or BLE support • Display: SSD1306 OLED (128×64), TM1637 4-digit clock display (synced from the app) ℹ️ GOOD TO KNOW • You need at least one sensor node: an ESP32 or a Raspberry Pi class board running the free, open companion firmware from GitHub. Arduino sketches and Python scripts are available for every supported sensor. • New: experimental Go, Node.js and Rust ports of every Python node, speaking the identical protocol — the app cannot tell them apart. Arduino and Python stay the reference implementations; the Rust port also does Bluetooth LE, while Go and Node.js are Wi-Fi only. • Scanning and discovery are free for all sensors. Data visualisation for a few selected sensors requires a one-time in-app licence purchase, which supports the ongoing development. 🌱 CONTINUOUSLY GROWING Development is ongoing: updates ship regularly, and support for new sensors is added continuously.