July 2017
Beginner to intermediate
352 pages
7h 30m
English
In Chapter 8, we made our robot using continuous rotation servo motors, but the most common type of servo motor can only rotate by around 270 degrees. While these motors can’t be used for robot wheels, their ability to repeatedly move to an absolute position makes them useful for all kinds of other things. Here we’re going to use them to control the position of a pencil so that we can draw shapes.
You’ll need:
A small corkboard (roughly 30cm x 40cm)
3x 9g RC servo motors (not continuous rotation) with their servo plates
One servo motor extension wire
9x patch leads
Breadboard
Espruino Pico
A 47uF, 6v (or higher) capacitor (optional)
An old pencil with soft lead (2B or softer ...
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