Make your ESP32 speak by sending text over Wi-Fi to cloud AI services like wit.ai or OpenAI TTS, which convert it into natural-sounding speech streamed back as audio. This beats storing robotic pre-recorded words locally and works with any language or phrase.

This project turns the Xiao ESP32 into a WiFi piano server with a 25-key web UI that supports touch and keyboard input. It outputs 16-bit stereo sine waves via I2S, shows info on an OLED screen, and plays five preloaded songs automatically.

Using an MPU6050 accelerometer and a KY-002 vibration switch, this ESP32 project filters acceleration to identify real shaking, blinking an LED for low-level tremors and triggering a sweeping buzzer alarm at higher levels, maintaining alerts until the shaking stops.

Using a corrosion-resistant photoelectric sensor powered at 3.3V, this system detects water presence by output voltage changes and triggers an ESP32 to send immediate flood warnings through Telegram for remote monitoring.

This guide shows how to make the Raspberry Pi Pico W act as a BLE peripheral and how the Raspberry Pi can send and receive data by reading and writing its characteristics, using bleak on the Pi and aioble on the Pico.

This project runs a complete voice assistant pipeline on the RP2350 chip inside the Raspberry Pi Pico 2, detecting speech, converting it to text for letters and digits, then synthesising speech to reply, all without any internet connection.

Discover how to automate firmware updates and interact with your Pico using MicroPython’s command-line tools, then build real-world IoT devices by hooking up sensors and relay modules.

By combining an ESP32-C3 microcontroller and decade counters, you can create a 3D printed LED roulette wheel that controls the light sequence and reports winners via Wi-Fi. It includes a web interface displaying player stats and game history.

This ESP32 project uses a DHT11 sensor, relays, and an OLED screen to monitor and manage temperature and humidity levels automatically or manually, while letting you control everything locally or remotely via the Blynk app.

By embedding a scalable lithium battery pack and UPS circuitry directly inside, Lifepod ensures your Raspberry Pi server keeps running through power cuts, protecting your data and maintaining connections with a status display and cellular fallback.

This ESP32-C3-powered multi-tool integrates sensors for light, temperature, and distance measurements, displayed on a 1.8-inch TFT LCD with button controls. It also includes some entertaining games!

Transistor operation depends on biasing two PN junctions to establish a stable Q-point and control current flow. NPN transistors use electrons, PNP use holes, and both switch between active, saturation, cut-off, and reverse regions, with correct biasing key to avoiding distortion and ensuring reliable amplification or switching.

This battery-management IC from Texas Instruments integrates an EIS engine to measure cell impedance on the fly, giving a detailed picture of battery health, state of charge, and core temperature while supporting up to 26 cells for high-voltage systems.

Using OpenCV on a Raspberry Pi, you can capture video frames from a camera to detect barcodes and QR codes, while also storing and sharing scanned data wirelessly for flexible automation.