Driver for multiple motors

Other Hardware Motors, Mechanics, Power and CNC
1

Hello!

I have to drive some motors ( almost 10 ) and looking on the web and in some forum I found a lot of solutions but they are really expensive...!

A few month ago I was asking how to drive some RGB leds and everybody say me to use some TLC5940 chip.
That is just crazy because to drive up to 50 RGB leds I need a lot oh chip, a lot of cable a lot of money and a lot of time...!!! That was really a crazy solution!!! I solve my problem using LED PIXEL... they are amazing, simple, fast and not expensve at all! They have a chip inside that do everything and assign a single channel to single led!

So I just want to know why nobody tell me before this solution and if there is a solution like this also for some stepper or DC motors...!
I mean motors with an integrate chip that works like Led pixel!

Thank you!

[What Led Pixels are? 12mm Diffused Thin Digital RGB LED Pixels (Strand of 25) [WS2801] : ID 322 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits](http://What Led Pixels are? 12mm Diffused Thin Digital RGB LED Pixels (Strand of 25) [WS2801] : ID 322 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits)

2

I doubt there's a cheap solution, but if there is then let us know. Something like a small motor with an integrated I2C controller chip would be very handy.

Issues with interference from large motor currents tend to make such a thing tricky - running a logic signal bus in parallel with the motor power wiring is asking for trouble.

Some of the manufacturers of small servos may have something like this for servos I seem to recall - perhaps some do motors as well? Would continuous rotation servos be appropriate to your project?

3

Exacly what I need!
continuous rotation servos are perfect for me!
I didn't know them! Thank you!
I will have a look to them and I will find a solution. However, if somebody other have a good idea, let us know!!!

4

It really depend on what you need the motors for and what you need the to do.

If it is a simple ON/OFF with small DC motor I believe a several simple transistors will work. This is quite cheap and easy enough to work out.

If you need to be able to change polarity it gets more complicated but you can use a double post double throw (DPDT) relay to do this.

If you need accuracy it gets more complicated yet and likely more expensive.

You'll need to clarify what you need.

5

Imagine you a theater. I'm building a little one and I have to move up and down my scenes. I need to change polarity and some accuracy, also.