Prototype 8: Larger vibrotactile Arrays using the TLC5940 chip

In order to overcome the 6 PWM channels on the Arduino, in this prototype we use multiplexer chips in order to increase the number of PWM channels. A library has been developed by Arduino users that makes it relatively simple to control the Texas Instruments TLC5940 chip which is designed for the control of LED arrays. Each chip has 16 channels and multiple chips can be daisy chained together. Some Arduino users, adopting a tinkering approach, have started to use it to control DC vibration motors and we successfully controlled 16 vibrators using one chip.