Download it now: http://download.udoo.org/files/UDOO_Quad/udoobuntu2beta3-quad-desktop.zip Major changes since beta 2: * Removed (not so much) useful packages saving RAM. * Kernel updated to 3.14.56 * Device tree can be configured using Preferences -> Device Tree editor, enabling additional devices (like UARTs, PWMs, 1Wire, etc) over GPIOs pins * 1-Wire GPIO master added to kernel (tested against the DS18B20 temperature sensor) * Configured the PWMs Linux-side (enable them using Device Tree editor) Please continue to report issues and wishes here or on GitHub, so we can release a final version soon! - udoobuntu bug tracker - device tree editor bug tracker About the Device Tree editor: By default, all the pins in the external pinout are configured as GPIOs; this tool allows you to change this configuration without the need to rebuild the kernel/device tree. Open Preferences -> Device Tree editor and enter your password (default: udooer). On "available features", drag a funcionality and drop it over an available pin. Pins compatible with a feature are highlighted in white. When done, click "Apply configuration" and reboot.