I&#x27;m trying to drive the cost down to $1-2 per pin. It&#x27;s obvious the MIT team did not optimize for cost. At $20&#x2F;pin (from the SparkFun link), a 28-pin display (the minimum you&#x27;d need for a 4 digit, 7-segment display clock would cost $560. To so anything interesting, you&#x27;d want dozens or hundreds of pins. Cost is a <i>huge</i> reason keeping this idea from being more wide-spread.