Node-based software deployed to a Raspberry Pi for controlling servo motors in order to keep a glowing arrow continually pointing at the moon. moonarrow.net
At Maker Faire 2018. [github]

Things I do/did: Collaborate with artist Heidi Neilson to implement and integrate hardware/sculpture with software; script automatic setup of offline LAN when in field; create nodejs-based script using Johnny Five for repeatedly synchronizing arrow position with that of moon in 3D.
Tools/tech involved: Raspberry Pi; nodejs; Johnny Five; suncalc; node-schedule