Atmega32u4 Breakout Board Tutorial
https://www.electronics-lab.com/atmega32u4-breakout-board-tutorial/
adafruit.com has published a new tutorial for their Atmega32u4 breakout board. It discuss on how to use it with AVRdude and how to setup and use it with Arduino IDE. We like the AVR 8-bit family and were excited to see Atmel upgrade the series with a USB core. Having USB built in allows the […]
DIY Bare Minimum Arduino Mega 2560
https://www.electronics-lab.com/diy-bare-minimum-arduino-mega-2560/
MichaelC349 @ instructables.com has designed an Arduino Mega 2560 board with bare minimum components and small size. The resulting board is bootloaded using an Arduino UNO and an external USB to serial adapter is used to program it. Personally to be used for robotics projects that require ATmega2560’s 256 KB flash and digital/analog pins, where […]
MIDI to USB Adapter with Teensy
https://www.electronics-lab.com/midi-to-usb-adapter-with-teensy-lc/
Joonas Pihlajamaa wanted to connect his keyboard to his Macbook and for that reason he build a MIDI to USB interface using Teensy board, an optocoupler and some resistors. Thankfully, I had a MIDI connector and a high-speed optocoupler at hand, and with these I could implement a MIDI in rather easily. After some investigation […]
Smart Watch
https://www.electronics-lab.com/smart-watch/
Matthew Filipek from Cornell Univercity has build a nice smart watch with 1.7 inch touch screen, SD card, Bluetooth module and various apps. One of the main inspirations for this project was Jared Sanson’s implementation of a DIY smartwatch (REF 0). With several design iterations, he was able to produce a watch in a very […]
SerialUSB: A cheap USB proxy for input devices
https://www.electronics-lab.com/serialusb-a-cheap-usb-proxy-for-input-devices/
Serialusb is a cheap (~$5) USB proxy intended to be used with input devices. It is the combination of: a PC software operating the host side of the proxy an atmega32u4 firmware operating the device side of the proxy SerialUSB: A cheap USB proxy for input devices – [Link]
Isolated USB-to-UART converter
https://www.electronics-lab.com/isolated-usb-to-uart-converter/
Jacob Beningo shows how to build an isolated USB to UART converter using Sparkfun’s modules. A simple isolation circuit that costs only a few dollars could have been used to protect the USB port on the computer. Embedded system developers get used to plugging strange hardware and components into their computers on a daily basis […]
Adding a USB power port to a switch for IoT
https://www.electronics-lab.com/adding-a-usb-power-port-to-a-switch-for-iot/
Jesus Echavarria @ jechavarria.com has tipped us with his latest project. In this project he adds a USB power port to a switch. Also I need a power supply for the Arduino board, and I think that, better than a external USB AC wall adaptor or power supply, is modify the switch to add it a […]
Raspberry Pi Zero 4 Port USB Hub
https://www.electronics-lab.com/raspberry-pi-zero-4-port-usb-hub/
Peter van der Walt has designed a nice USB Hub for Raspberry Pi Zero computer. Design files are available on github: In line with my other projects I need to make a USB hub attachment for the Pi Zero. Seeing as the community figured out that the Raspberry Pi Design team was clever enough to […]
NerO – An Energy Efficient Arduino UNO Compatible Design
https://www.electronics-lab.com/nero-an-energy-efficient-arduino-uno-compatible-design/
A reference design for an Arduino UNO compatible board based on the FTDI FT231X USB UART, delivers 5V at a full 1A without overheating. The UNO R3 is the staple of most Arduino based projects but it’s been around for a number of years and many of the features have been improved for example by […]
Microcontrollers with USB interface are common, but…
https://www.electronics-lab.com/microcontrollers-with-usb-interface-are-common-but/
FTDI.FT-X series USB to serial bridges can be still reasonable option even for today. Microcontrollers with USB interface are common nowadays. Manufacturers provide source codes for USB device classes like CDC, HID, Mass storage and DFU. . Even in this case, programming USB communications may not be a trivial task. If it is only required […]