Robotic Worm (power hungry)
It can wiggle forward, backward and rotate itself according to user-friendly control! It is thirsty for power and I tried hard to wire it that it won't black out.
It needs:
Two Servo
One Stepper Motor
One Arduino uno board
One Joystick
External power sources (9V battery + stripped USB cable)
(I wanted to make a spider but I am too broke :((( )
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Timeline
Improved joystick control with cubic formula!
I found that the cheap joystick is less sensitive the the middle and more at the ends. Implementing this helps me fine control the wiggling strides a lot!
INITIAL OPERATION: stepper motor working with servo arm perfectly according to joystick control.
The stepper motor is so power hungry that even the USB socket is not enough, so I powered it with a 9V battery through another Arduino. (I am looking for a soldering kit to make a better external connection!)
Servo arm wiggles now can be made small/reverse with joystick control and are perfected.
It is ready to integrate with the stepper motor base
Made servo repeatably wiggle. The skipping issue is serious and I should wire my project better.
I have got the stepper motor following the joystick. It moves +-90 degrees and return to the origin as user release the joystick