To build this Instructable, you will need an electric wheelchair
, (We used an Action Arrow Storm Series), an EEG Headset
, (We used an Emotiv wireless headset), a Laptop Computer
, an Arduino
, and an interface circuit
made from basic electronics, (see step 5 for materials for the interface circuit).
The Electric Wheelchair
was acquired as an unwanted extra from a local repair shop. It was not considered serviceable for disabled persons because its condition was below standard. If you hear of someone in need of an electric wheelchair who is low on funds, encourage them to ask repair shops for unwanted chairs.
The EEG Headset
is an EPOC
acquired from Emotiv
. Their site is here:
The Laptop Computer was Steve's but any laptop will do, it only needs to have two USB ports - one to connect to the Arduino, and the other for the EEG headset's Wireless receiver.
is a small microcontroller platform with a USB serial interface. In this case, it serves as a bridge between the laptop computer and the interface circuit (see steps 5 and 6).
Originally, the Arduino was not used, and the interface circuit was connected directly to the parallel port of the computer. The computer we eventually used does not have a parallel port, so the Arduino performs the function of providing eight on/off signals based on a packet of serial data sent through its USB interface. So if your laptop has a parallel port but is new enough to run the Emotiv software, you might be able to skip the Arduino.