This compact device uses an AVR16EB28 microcontroller to generate square waves from 2 Hz to 33.5 MHz with 2 Hz steps. It features an OLED display, rotary encoder for quick changes, and a keypad for precise frequency input, all powered by a LiPo battery.

This project uses an off-the-shelf ESP32-S3 board and a 3D-printed case you can build quickly, flashing the firmware in just 70 seconds from your browser. The robot talks back, shows an animated face, and handles commands like setting alarms and turning off lights, all with minimal tools and effort.

Need to know how much energy a capacitor stores at a given voltage? This calculator uses capacitance and voltage to calculate stored energy, or works backwards to find the capacitance or voltage needed for a target energy. Useful when sizing capacitors for power supplies, energy storage, flash circuits or supercapacitor applications.

Find out how to get the ESP32’s hardware MAC addresses for Wi-Fi and Bluetooth, and how to override them by programming a custom MAC address that you must reset each time the board restarts.

Static IP proxies, unlike rotating proxies, keep a fixed address to avoid breaking authentication and session state. This article explains how they work and why they’re essential when you need consistent remote access or IoT device connections.

This project shows how to assemble a tiny internet radio using a $2 ESP32-C3 SuperMini and a PCM5102A DAC board, then flash ready-made firmware to stream online stations.

By redesigning materials and reducing emissions during manufacturing, STMicroelectronics delivers motion sensors free from restricted substances that still offer the precision and durability needed in modern electronics.

Use two ESP32-C3 and MPU-6050 sensors on belts to create Bluetooth gamepads that track your body movements for a Raspberry Pi dinosaur runner. BlobJump works headless in kiosk mode, lets two kids play together, and is easy to prototype with cardboard before 3D printing.

Built on the NXP i.MX RT1170 and phyBOARD-Atlas, AmbientAI uses a camera and environmental sensors to score your mood and surroundings, then selects playlists stored right on the device. It keeps everything local, fusing inputs like light, temperature, and facial expressions to avoid cloud data sharing while adapting music to four simple emotional states.

Learn how to build a high-precision Grandmaster Clock using the PHYTEC RT1170 dev board and NXP RT1176 chip, including extra hardware and expanded code listings.

Powered by the AMG8833 8×8 infrared sensor and a GC9A01 round display, this pocket-sized thermal camera delivers basic thermal imaging with colour mapping. It’s small, battery-powered, and useful for checking electronic faults and temperature variations quickly.

The Arduino Nano ESP32 packs a powerful dual-core ESP32-S3 processor with Wi-Fi and Bluetooth into a tiny, breadboard-friendly Nano form. Knowing its pinout helps you wire up sensors and modules right, unlocking its full potential for connected projects.

Using just a few components, this wearable pendant brings a creepy eye to life on a Waveshare ESP32-S3 round display inside a custom 3D-printed case. It’s easy to build, small, and has great battery life.

At just $5, the ESP32-S3 Super Mini offers Wi-Fi, Bluetooth, 45 GPIO pins, and USB Type-C OTG, making it easy to build energy-efficient devices with sensors like the AHT20 and interactive RGB LEDs or TFT displays.

To beat EMI, it’s not just about capacitance but also geometry. Feed-through capacitors serve as essential filters that guard shield boundaries, preventing high-frequency interference from passing through power or signal inputs.