Arduino Stepper Motor w/ User Input (4K)

Simple stepper motor program for the Arduino Uno that allows for user input for direction and number of rotations. Uses the ULN2003 and 28BYJ-48 motor.
It took me half a day to do this on the Raspberry Pi. It took over a week (in spare time) to do it with the Arduino, 90% because of the serial IO!!!

WARNING: Miswiring your Arduino can ruin it and any accessories. Information offered "as is", you are fully responsible for how you use it. If you do not know, learn first or don't do it.

 INFORMATION
- Arduino Uno
- ULN2003 chip board.
- Gravitech ROMT-0647 stepper motor kit
- Motor Model 28BYJ-48-5V
Rated voltage ： 5VDC
Number of Phase 4
Speed Variation Ratio 1/64 (gear ratio)
Stride Angle 5.625° /64
Frequency 100Hz
DC resistance 50Ω±7%(25℃)
Idle In-traction Frequency greater than 600Hz
Idle Out-traction Frequency greater than 1000Hz
In-traction Torque greater than34.3mN.m(120Hz)
Self-positioning Torque greater than 34.3mN.m
Insulated resistance greater than 10MΩ(500V)
Insulated electricity power 600VAC/1mA/1s
Insulation grade A
Rise in Temperature less than 40K(120Hz)
Noise less than 35dB(120Hz,No load,10 cm)

360 / 5.625 = 64 steps to make 1 MOTOR revolution (but motor is geared 64:1) 64 x 64 = 4096 to make the output shaft turn once.

[Jrivera]

Sir, I’m interested in stepping a motor incrementally. Each step initiated by an input signal. Each increment steps then waits for the next signal. Can you help?