Create 3D object in DraftSight

To create a new not standard 3D object in DraftSight:

  • Draw the object with Polyline3D
  • Select the object
  • Use the Block command

RPi – Raspberry Pi – Kernel RT – XCompiling – HowTo








This guide is valid for the RaspberryPi 1.

  • In your linux PC home directory create a rpi_kernel directory:
$ mkdir ~/rpi_kernel
cd ~/rpi_kernel
  • Download the raspberry tools:
$ git clone git://
  • Add the bin folder to PATH:
$ PATH=rpi_kernel/tools/arm-bcm2708/arm-rpi-4.9.3-linux-gnueabihf/bin:$PATH
  • Download kernel sources:
$ git clone --depth=1
  • Download the RT patch:
$ wget
  • Apply the patch:
$ cd linux
cat ../patch-4.4.XX-rtYY.patch | patch -p1
  • Make an RPi default configuration:
$ make ARCH=arm CROSS_COMPILE=/arm-linux-gnueabihf- bcmrpi_defconfig menuconfig

  • Compiling the kernel:
$ make -j 8 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs
  • To install kernel and modules on your Raspberry follow the official guide from: Install directly onto the SD card




Sostituire l’ATMEGA328P-PU su Arduino: Come programmarlo – heron’s blog

Un’utile guida per chi deve sostituire l’atmega 328 del proprio Arduino:

Sorgente: Sostituire Arduino con un ATMEGA328P-PU: Come programmarlo – heron’s blog