Reviewing the touch sensitive technology
As the hand is almost complete, the touch sensing technology is now a focus.
Due to changes in the design since the touch technology was last reviewed, the decision on which technology to use was reviewed.
Also, the previously chosen technology had suddenly risen in price, from 10p per sensor to approximately £16 per sensor, making it a far less inviting option.
Also, a new technology came to light.
Velostat
Velostat is a plastic mixed with carbon, making the sheeting conductive. When this sheet is compressed, the conductivity changes, and so makes pressure detecting possible.