Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Wiring 4 Motor Spyro Help

Kevlar

0
Joined
Apr 26, 2010
Messages
1,353
Points
48
So I'm building a 4 motor laser Spirograph.

I'm using four 1.5V - 3.0V DC motors, four 25 Ohm Rheostat Pots, and four DPDT switches.

I originally had it all wired up without the switches but had a couple of issues.
1. It would drain the batteries really fast with 1 or more pots turned to maximum resistance.
2. When I first powered it up, and the pots set to maximum resistance the motors wouldn't turn (like I would expect). So I could lower the resistance of the pot to get the motors spinning but when I turned it back to max resistance the motor would not completely stop, just spin real slow.

So I decided instead of using SPDT where it would only give me on/off, why not use DPDT (three way, center off) switch so I could turn each motor off as well as reverse the direction.

So I wired it all up. It works great going one direction, the way its supposed to, I have control over the motors speed with the pot, but when I switch directions of the motor it goes straight to full speed and I have no control over it with the pot.

Here is a diagram I drew (sorry I'm no artist) of how I wired it.

SpiroWiring.jpg


If any of this is confusing or if I've not been clear please let me know.

I'm guessing instead of wiring 2 of the leads of the pot together, I'm supposed to wire the center lead to somewhere else on the switch?
 





Joined
Oct 26, 2007
Messages
5,438
Points
83
That diagram is terrible. Can you please make it look like a real circuit diagram rather than a bunch of pick-up-sticks? No, it doesn't need to be some awesomely created one created in a program, but some straight lines (i.e. vertical/horizontal), some standard symbols (like how your switch is supposed to operate symbolically), etc. would make it much easier to interpret.
 
Joined
Sep 20, 2008
Messages
17,622
Points
113
Hey Kevlar....

I've already answered your identical Thread and same questions
on LEC yesterday and again this morning...

Read what was posted over there and use the Knowledge we
supplied...

Why do you think you will get different Responses here....:undecided:
Electronics is not ambiguous...

@ BB... that is what we call Point to Point wiring or Rubber
banding when producing a PCB layout...
I can still read it even though it is a bad Schematic layout...:cool:


Jerry
 
Joined
Nov 10, 2008
Messages
4,186
Points
63
Hey Kevlar....

I've already answered your identical Thread and same questions
on LEC yesterday and again this morning...

Read what was posted over there and use the Knowledge we
supplied...

Why do you think you will get different Responses here....:undecided:
Electronics is not ambiguous...

@ BB... that is what we call Point to Point wiring or Rubber
banding when producing a PCB layout...
I can still read it even though it is a bad Schematic layout...:cool:


Jerry

Jerry, which thread are you talking about? I want to read your replies as well.
 
Last edited:

Kevlar

0
Joined
Apr 26, 2010
Messages
1,353
Points
48
Hey Kevlar....

I've already answered your identical Thread and same questions
on LEC yesterday and again this morning...

Read what was posted over there and use the Knowledge we
supplied...

Why do you think you will get different Responses here....:undecided:
Electronics is not ambiguous...

@ BB... that is what we call Point to Point wiring or Rubber
banding when producing a PCB layout...
I can still read it even though it is a bad Schematic layout...:cool:


Jerry

I posted here as well because the knowledge supplied over there was my diagram was correct... but yet it still doesn't operate the way it should. I re-checked my wiring to the diagram and it matches.

I thought maybe getting some other eyes on it might get some different ideas of why its not working properly.

BTW, why are you posting in my thread here if you don't have any usufull info to help me solve my wiring problem. :thinking:


@BB, thanks for the link for the wiring schematic, I will go there and try to make is look more readable. :yh:
 
Last edited:

Kevlar

0
Joined
Apr 26, 2010
Messages
1,353
Points
48
That diagram is terrible. Can you please make it look like a real circuit diagram rather than a bunch of pick-up-sticks? No, it doesn't need to be some awesomely created one created in a program, but some straight lines (i.e. vertical/horizontal), some standard symbols (like how your switch is supposed to operate symbolically), etc. would make it much easier to interpret.


Sorry BB, that is the best I can do without some software assisting me. Thanks anyway.
 




Top