Rotary indexer’s are standard issue in most ... he built an all-electric rotary indexing jig using a stepper motor and an Arduino, giving him a sort of rotary 4th axis. His idea was to ...

That’s the idea behind [BetaChecker’s] two-axis stepper motor, which looks like it has ... a large number of L293 H-bridge chips and an Arduino Mega. A variety of sleds, each with neodymium ...