An Arduino library for I²C GPIO-expander with sample code. To operate the port for input, the IO pins can be configured bit by bit. The config bit for output is 0 and input is 1. When the bit 0 to 4 ...

The goal of this project is this project is to provide firmware and drivers to make an Arduino serve as a GPIO expander via USB, giving any PC or SBC GPIO pins that can be used as if they were built ...

You might be wondering why the Raspberry Pis are so popular despite there are desktops or laptops that are much more powerful than a Pi. Apart from the small form factor and low power usage one of the ...

The newly released Arduino Leonardo has a few very interesting features, most notably the ability to act as a USB keyboard and mouse thanks to the new ATmega 32U4 microcontroller. This feature isn’t ...

Introduced in 1984, the Psion Organiser series defined the first generation of electronic organizers or PDAs (personal digital assistants). Even though these devices are now over 30 years old, the ...

Adafruit has unveiled a new addition to their range in the form of the Adafruit Metro Mini 328 that has been designed dot provide a USB-to-Serial connection. The Adafruit Metro Mini 328 takes the form ...

I always like projects that bring the Raspberry Pi and Arduino together, however gently. It's what the world needs, a bit more harmony. Check out this little one on GPIO programming on a Raspberry Pi ...

The XR22804 USB 2.0 to 10/100 Ethernet bridge IC offers a high level of integration, combining a Hi-Speed USB 2.0 hub with controllers for 10/100 Ethernet, I 2 C, 32 GPIO, and four enhanced UARTs. The ...