This GRBL uses an ugly hack to control two motors unipolar steps as 28byj-48 and also supports a servo motor on pin 11 The motors (28byj-48) are connected to a controller card that uses the chip ...

This repository contains all files necessary to control 28BYJ-48 type stepper motors using an arduino MEGA with sensor shield. It is based on the previous work by ...

Proving that astrophotography doesn’t have to break the bank, [Gerald Gattringer] has recently documented his DIY “barn door” style star tracker which is built almost entirely from scratch. Short of ...