#### Deskbot Part 5, Optimization

Now that we have a basic inverse kinematic model, the sky's the limit. Wait. The horsepower of a Raspberry Pi Model A is a pretty good limit. In this video, the eye vector is tracing out a circle, trying to hold 1 second per circle.

As you can see, it's not particulary smooth. Here is the co...

#### Simple Stepper Motor Control with Raspberry Pi

Stepper motors are a type of brushless DC motor that can be controlled so that they advance a fixed step size. Additionally, they provide a strong holding torque. This can make them useful in applications where you want to rotate the motor precisely without employing encoders. When prototyping, I...

#### Writing a Raspberry Pi Image Using the Ubuntu DiskUtil

The basic steps for loading a Raspberry Pi image after downloading and unzipping the image (to /dev/sdg1 for example) are:

sudo umount /dev/sdg1
sudo dd bs=4M if=2013-09-10-wheezy-raspbian.img of=/dev/sdg1
sudo sync

This didn’t work for me. It seemed to write the data but left the card unboot...