Combining Three Touch Sensors
The three touch sensors are wired through a resistor ladder to a single sensor input. Using three different resistor values, the 8 combinations of ON and OFF become 8 distinct input levels, and the robot software can decode the input into three separate binary input values.
modified electric plate
The upper plate has been cut in three places so that the conductor running along that edge is broken into 4 separate segments.
The lower plate has been further modified by removing the "tube" material in 3 places.
LEGO® creations index
The graph paper in my newer photos is ruled at a specing of 1 LSS, which is about 7.99 mm.
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This page was written in the "embarrassingly readable" markup language RHTF, and was last updated on 2016 May 15. s.11