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 ...

This is a modified fork from ruizivo/GRBL-28byj-48-Servo. This modification implements all 3-axises XYZ to a 28BYJ-48 stepper motor. The motors (28byj-48) are connected to a controller card (Arduino ...

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