Using an ESP32-S2 Feather and lux sensor, this battery-powered project measures garden light, saves data to the cloud, and sleeps between readings to stretch battery life, helping you find the best spots for different plants.

OctaCalc’s Heat‑Sink Temperature Calculator lets you predict the junction temperature of a component given the power dissipation, ambient conditions and the thermal resistance of the heat-sink and interfaces. It’s handy when selecting a heat-sink for power transistors, LED drivers or voltage regulators, ensuring you stay within safe operating limits without costly prototypes.

From extending Bluetooth range to detecting presence or scanning Wi-Fi signals, these ESP32-based setups offer local, subscription-free smart home solutions with minimal components and easy ESPHome configuration, making smart tech more accessible.

A comprehensive guide to building a fully functional PipBoy AR Mark 6000 - a custom wearable computer designed and built from scratch by a Fallout enthusiast.

Follow a step-by-step journey through capturing voice signals with the UNO R4’s A/D converter, playing them back via the D/A converter, and adapting the output impedance using the built-in op-amp before creating a working electronic voice changer with simple hardware.

Build a desktop inventory management system with Arduino UNO Q to track electronics components while also functioning as a productivity timer.

This project uses Arduino Uno and LX16A servos to make a robot that performs human-like movements like walking sideways, kneeling, and turning, with open STEP/STL files and a structured C++ class for motor commands.

By adapting the open-source Tactility firmware, a maker has turned a MaTouch Lite ESP32-S3 board into a portable 2.4-inch touchscreen PC with microSD storage and USB mouse/keyboard support. The device includes desktop-like features and routes GPIO pins externally, housed in a custom 3D-printed case for field electronics work.

Seeed Studio’s Wio-S3 integrates an ESP32-S3 MCU and SX1262 LoRa chip to deliver long-range LoRaWAN, 2.4 GHz Wi-Fi, and Bluetooth 5.0, plus 16MB flash, 8MB PSRAM, and LoRa power up to 20.9 dBm.

This guide demonstrates how to build a local web server using ESP-IDF framework on ESP32 development board that operates in Access Point (AP) mode.

This ESP32-S3-based board merges long-range LoRa, wireless connectivity, a small OLED display, and battery plus solar management in one compact package. The guide covers the main hardware specs, important GPIO pins, and the basics of configuring the Arduino IDE for your first build.

Not every ESP32 trace needs controlled impedance, but USB, Ethernet, CAN, and RF lines often do to avoid intermittent disconnects and signal loss. This guide explains how trace geometry and dielectric impact impedance and offers tips for communicating your requirements to PCB makers.

A DIY security system project that uses ultrasonic and IR sensors to detect intruders in a protected area and trigger an alarm.