20120624

Raspberry Pi - alsa

Install alsa:

  • sudo apt-get alsa

and make sure that the module is loaded:

  •  sudo modprobe snd-bcm2835

20120623

Raspberry Pi - ssh


Using the Debian squeeze image from http://www.raspberrypi.org/downloads

I'd like to be able to run it headless, need ssh running automatically after boot:
  1. ssh-keygen (answer the prompts)
  2. sudo update-rc.d ssh default
  3. sudo reboot
or

  1. cd /boot
  2. sudo mv boot_enable_ssh.rc boot.rx
  3. sudo reboot



20120617

Robot hand from seven parts - 2 (some photos)












The finger bend both ways: the finger tips can therefore are either pads or sharp.

From the base of the wrist to the tip of a finger is about 27cm. If i ever get to build the entire robot it'll be approx 2m70 high...

Robot hand from seven parts - 1

Take one or more of each of the following parts, snap or friction fit them together and you get a robot hand!

Snap the first two together to create a rotating joint:


Hold a couple of those together with a connection piece and you get finger:
At one end of the finger place a finger tip:
Give the thumb an additional degree of rotation:

 Use a spacer between the fingers...
when you slide them on the wrist, then snap the thumb on and the hand is ready.

Partslists:

Part 1 Part 2Part 3Part 4
Part 5Part 6Part 7




Finger:
  • Part 1 : 3
  • Part 2 : 3
  • Part 3 : 3
  • Part 4 : 1

Thumb:

  • Part 1 : 4
  • Part 2 : 4
  • Part 3 : 4
  • Part 4 : 1
  • Part 5 :1

Hand:

  • Part 1 : 16
  • Part 2 : 16
  • Part 3 : 16
  • Part 4 : 5
  • Part 5 : 3
  • Part 6 : 4
  • Part 7 : 1