Cruise around AliExpress for long enough and you’ll find some interesting new hardware. The latest is the TTGO T-Call, an ESP32 breakout board that also has a cellular modem. Yes, it’s only a 2G modem ...

Build portable IoT projects with this $4 ESP32 development board. The built-in 18650 battery holder and charging circuit make ...

From smart home to hobbies.

This project demonstrates how text-to-speech can be implemented both online and offline, free of cost and without relying on ...

The Framework laptop will no doubt already have caught the eye of more than one Hackaday reader, as a machine designed for upgrade and expansion by its users. One of its key features is a system of ...

There's no point in buying a Raspberry Pi when an ESP32 board can do half the things for just $9 ...

My first foray into the IoT utilized the Espressif ESP8266, an SoC with 32-bit MCU and 2.4-GHz Wi-Fi built in. Since then, I have used many different module variants based on the microcontroller. So ...

Build a custom ESP32-S3 automation system featuring 16 programmable relays, an MCP23017 IO expander, and a web interface for ...

Configures and initializes the OV2640 camera sensor. Calls stopI2S () to release GPIOs 12, 14, and 15. Sets up the camera pin ...

Air is a necessity for us human beings, so monitoring it is important. Air quality is monitored in terms of the Air Quality Index(AQI), a single-number scale used to tell how polluted the air is and ...