Hello all,
I'm trying to build this machine as seen on YouTube and at the creator's website:
I'm having trouble with some unknowns not clear in either the video or the webpage at the link above. For one, the creator provides a "Item Used" list:
- [Arduino NANO]
- [A4988 STEPPER DRIVER]
- [ROTARY ENCODER]
- [16X2 I2C LCD DISPLAY]
- [NEMA 17 STEPPER MOTOR]
- [MOTOR]
- [L293D IC]
and a "Wiring Diagram"
on the webpage, but in the video starting at the 18:00 mark there shows components on a small PCB that are not in the "Item Used" list or in the "Wiring Diagram"
On another website about circuits where I'm asking about the wiring diagram and missing components, one responder pointed out the need for a Vref as shown here:
and with these instructions:
You set the pot to the voltage on pin15 based on the volt drop across the sense resistors based when max current for the motor is present..
R51 R52 would be ~0.5ohms , not wire wound type.
For starters, I need help to fill in or make a complete wiring diagram showing all necessary components.
The creator shows the PCB can be ordered by a fabricator and who that is, but the fabricator needs Gerber files to make the PCB and the creator doesn't seem to provide this even though he does provide codes for the Arduino and stepper motor (all linked on the webpage). I'd need OrCAD to make my own Gerber files and I don't feel like dropping $1,300 buying software that I'd rarely use.
A final issue is once the hardware is all set up, how exactly are the codes loaded into the hardware?
Building the machine physically is not a problem, neither is setting up the hardware/electronics. It's the missing components mainly and PCB fabrication secondly.
Has anyone built this machine before?
Thanks for any help, input and advice.