magneval

//Program that outputs all PS2 scancodes via serial

#define BUFFER_SIZE 45
static volatile uint8_t buffer[BUFFER_SIZE];
static volatile uint8_t head, tail;

#define DATA_PIN 10
#define IRQ_PIN 3

// The ISR for the external interrupt

magneval

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

magneval

FROM ubuntu:precise

# ubuntu precise image doesn't have universe repo
run     echo "deb http://archive.ubuntu.com/ubuntu precise main universe" > /etc/apt/sources.list
run     apt-get update
RUN apt-get install -y wget

# install ROS
RUN sh -c 'echo "deb http://packages.ros.org/ros/ubuntu precise main" > /etc/apt/sources.list.d/ros-latest.list'
RUN wget http://packages.ros.org/ros.key -O - | apt-key add -