this is a daughter-board for the raspberry-pis that will run each arm of tekton one three. in theory, it was trivial: bridging the pi’s header pins to connectors for the specific cable runs that needed to be made, via 3.3v-5v driver chips. in reality, it was a painstaking hand layout: as well as the data lines, this was the power distribution board for whole lot of LEDs. double digit amps, most of the ribbon cable between moving carriage and fixed upright is simply power.

ordered the PCBs from http://hackvana.com – highly recommended, run by somebody who cares. with help of ninja friend Arron Smith i got to grips with soldering the 0.7mm dot pitch FFC too.

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