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My daughter likes buttons. She's learning letters. I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable ...
It’s why I tend to use the 32U4 or the like. I have a programmer but if I use a USB to Serial, the damn Windows box keeps assigning an ever higher vitual port number with each connect.
I used V-USB for a couple of projects with my own code from scratch (i.e. No Arduino etc) and they work fine. I am using Win7 X64+libusb and use Vendor Specific commands only.
Specifications of the Atto are listed below and the board works out of the box with the Arduino IDE 1.0+ on Windows, Mac OS and Linux. – Core: ATmega32U4 microcontroller running at 16MHz ...
The OONTZ uses a 3D printed case, a 16 button keypad, an Arduino Leonardo, a monochrome driver, and a few potentiometers. ... When you're done, you'll have your own USB MIDI controller.
Small enclosures for USB dongles, Arduino and BeagleBone. To house small PCBs using USB as the external power and signal interconnect, Hammond Electronics has extended its 1551 miniature enclosure ...