Here’s my second try of building a Lego delta bot.

The idea here is to initially make sure the mechanics are sound by hooking the servos up to a receiver and moving them with a radio controller transmitter.

Once that’s tidy I’ll dig up the code I made for an earlier version of this bot (written for the Lego NXT brick) and adapt it for use with an Arduino. Eventually I want this bot to be able to stack pancakes as fast and as terrifying as these guys: