Padre, KH 211 was soooo cool Did not know, till now, about sending keystrokes to the Arduino ...

[G+_Bernard Bout]

Padre,

KH 211 was soooo cool. Did not know, till now, about sending keystrokes to the Arduino.

It should be possible to do this type of control using a web interface? That way the steppers could be controlled from anywhere there is internet. Could you put that on your list of projects/upgrades?

 

Which 3d Printer did you use to print those parts and why not PLA? Less chance of warping and sticks too well with a glue stick on glass.

 

I just got into 3D printing this year but built mine from a kit with hundreds of parts. It was great fun. I use mostly PLA.

 

I have this board as below. Do the external power wires connect to the circled pins? Also if driving a 12v Stepper do I move the jumper to the left 2 pins and connect power to the right 2 pins - + or + -? Thing is the board is standard and came with that same 5v stepper you use but without any instructions and was thinking this board could be used for driving a  Nema17 - 12v stepper as well? What do you say?

[G+_Fr. Robert Ballecer, SJ]

It supports 5-12volts... That jumper is the on-off switch. :)

[G+_Scott W]

On the driver boards I have, the two middle pins in your red circle are common. If you remove the jumper you lose power to the stepper motor, but will still power the board. You can then power the stepper from a different power source to the 4th pin (far right).

[G+_Fr. Robert Ballecer, SJ]

BTW... really glad you enjoyed the show. :)

[G+_Dominick Valentic]

I was just about to ask about the 12volt option when I saw this....so I'm correct in assuming then that I would be safe in switching out to the 12v motor for a barn door tracker I want to build without any modification except giving the driver board the appropriate amount of power? I'd use the motor you guys used but the weight involved might be too great for smooth movement of the tracker over a long exposure.

[G+_Rud Dog]

Scott W The board does seem to conflict from the view of common sense it appears the silkscreen is showing connecting 5V positive on to the second ping from the left as shown in the pic and ground to the first pin?

But after reading your view it appears the two center pins are ground so the first pin would be connected to 5Vs and the second pin would be connected to the ground from your external 5Volt supply.

[G+_Scott W]

What I meant by the two center pins being common, is they are connected together, not ground pins. When you put +V on the 2nd pin, the third pin is also hot. If you remove the jumper you can feed the motor separate from the board via the 4th pin. The 4th pin goes to the motors +Vin .  

[G+_Rud Dog]

Thank you for clarifying makes a lot of sense.