Driving directly a stepper motor used for Vehicle’s Instrument Gauges.
The motor must be removed during the Sketch Loading (disconnect from USB pins) .
This kind of motors can be driven directly by the Trinket.
The motor follows the potentiometer.
The Sketch is the same used in the “Arduino Driving a Micro Stepper Motor” in this blog, just change the pin mapping to use the Trinket .
Change the definitions in “Gauge_Pot01.ino”:
#define STEPS 720 // steps per revolution (limited to 315°) #define COIL1 1 #define COIL2 3 #define COIL3 4 #define COIL4 0 #define POTIN 1
The YouTube video…