Learn about the real-world range of ESP-Now devices, with experiments showing a range of up to 500 meters using long-range mode in outdoor settings. Discover the trade-off between range and bandwidth and analyze the data collected during walk tests.
Learn how to repurpose old iPad speakers with a custom designed stereo I2S Class D amplifier, using EasyEDA for the schematic and PCB layout. Discover how to create a simple Bluetooth speaker using an ESP32 and a stereo amplifier for your DIY audio projects.
Take a closer look at the Arduino Nano RP2040 Connect, a versatile board that supports Python and contains a 32-bit dual-core Arm Cortex-M0+ processor, WiFi & Bluetooth module, and a six-axis motion controller. Find out how to use the RGB LED, read values from the PDM microphone, and create innovative projects using this powerful, compact device.
Check out the latest mailbag with cool electronics, including a laser galvo scanner, iPad displays, audio amplifier PCBs, and even wake-word detecting microphones!
Learn how to connect a GPS board to an ESP32 and parse location data using the Arduino framework while walking around. This tutorial also includes tips on troubleshooting serial connectivity with a USB to UART board and a terminal program.
Discover how to use I2S with Micropython on the TinyPICO board in this detailed tutorial, comparing C++ and Micropython implementations. Learn how to build custom Micropython firmware with I2S support, set up an environment for the project, and use I2S for recording and playing back audio.
Learn how to modify a custom PCB for an ESP32 walkie-talkie project, including exposing spare GPIO pins, freeing up the DAC pin, saving GPIO pins for the microphone and amplifier, and wiring up the shutdown pin on the amplifier for low power mode.
Uncover a hidden screen in the Raspberry Pi Imager Application to easily set up SSH, WiFi, and hostnames for your device without creating additional files. Just press Ctrl+Shift+X!
Learn how to transform an old iPad 1 screen and a Raspberry Pi Zero into a Magic Mirror with this step-by-step guide! Enhance your home with this unique, DIY upgrade.
Learn how to choose ideal parameters for dma_buf_count and dma_buf_len when working with I2S audio and DMA, exploring the impact of these values on CPU load, latency, and memory usage.
Learn how to use the ESP32 to record and play WAVE files to and from an SD Card with ease, using the Arduino framework.
Discover how to create your own Walkie Talkie using an ESP32, I2S microphones, and a 3W amplifier board with this step-by-step guide. Explore code, schematics, and more to customize your Walkie Talkie project!
Discover the solution to removing noise in a walkie-talkie project by using power filters and ground pins. Watch the experiments and see the noise reduction in action!
Discover the mystery of the audible noise in ESP32 boards during Wi-Fi transmission and explore potential solutions to tackle the interference issue in this walkie-talkie project.
Join in on the fun of creating a walkie-talkie with Fusion 360 in this video, showcasing a mix of skill and creativity that is sure to inspire. Don't miss the full build in the next video!
Learn how to port an M5Stack Core2 Audio Monitor for use on any ESP32 with a TFT screen, by utilizing a TTGO board. Find the modified code on GitHub and modify it for your preferred board.
Explore the audio capabilities of the M5Stack Core 2, and learn about the potential impact of the plastic case and differences between the PDM and PCM microphones. Discover how to set up the I2S config, manage audio processing, and create a stunning audio visualizer.
Discover the multifunctional M5Stack Core2 packed with amazing features like a touch screen, speaker, microphone, and more, perfect for creating exciting DIY projects!
Learn how to get started with Raspberry Pi Pico by soldering headers, writing codes, and building a classic blinking LED project in this tutorial.
Learn how to create a custom magnetic rotary encoder using an AS5048 sensor and a 3D printed enclosure, greatly improving the accuracy and gameplay of an Asteroids game controller.
Dive into the contents of the first mailbag, featuring a variety of linear regulators, DC to DC converters, ESP32 modules, microphones, preamps, A2D converters, and more! Get ready for some exciting new audio projects and computer vision experiments.