Guidance needed to control AZSQ1813 motor

Using Arduino Project Guidance
1

Hi,
I am planning to control a AZSQ1813 motor with Arduino.

Do you know if I need a ESC to control this motor? All I want is that using Arduino 101 (with bluetooth) and an Android app I should be able to turn this motor on and off. Speed control is not important. It can run at full speed.

Secondly, I was not able to find the specifications of this motor. Would anyone know how much voltage and power is needed for this motor?

Thanks for any help.

2

That is a DC brushed motor intended to run on a 3.7V lipo. There's no need for an ESC to control it you. A simple logic level MOSFET circuit will do. The current it needs will depend on what load it's driving but I would guess at about 1.5A max.

Steve

3

Oh thats great.
I thought this was Brushless motor.

I will try out a MOSFET circuit and see how that goes.
Any specific transistor should I go for?

4

In the hobby world it's easy to tell motor types apart. Brushless have 3 wires, brushed have 2.

There are thousands of MOSFETs that should work. I've used the STN4NF03L with some success but it's not a true logic level MOSFET so there are probably better ones out there.

Steve

5

Thanks,
That was very useful.
Managed to assemble a circuit using a transistor, diode and resistor and it works.
Now I need to calculate how much current is being drawn and if I can use a Lipo battery to reduce weight.

6

I have a follow up question on this.
I followed the tutorial here and I am able to get one motor running.

What do I need to do to make two or three of these motors to run?

  1. Do I need a transistor for each motor? or can I connect multiple motors in parallel.
  2. Can I power them all using a single Lipo battery? or would need one for each.

Thanks

7

ssdesign:
I have a follow up question on this.
I followed the tutorial here and I am able to get one motor running.

What do I need to do to make two or three of these motors to run?

  1. Do I need a transistor for each motor? or can I connect multiple motors in parallel.
  2. Can I power them all using a single Lipo battery? or would need one for each.

What tutorial? Where?

It is usually better to control the motors separately which needs a MOSFET for each. But if you really just want them all to turn on and off together then it is possible to run several in parallel. If you do that you may need a bigger MOSFET because the currents add up.

Either way you can run them all from a single Lipo.

BTW what sort of "transistor" are you using? If it's not a MOSFET you should find a better tutorial. And if it is a MOSFET it's better to use that term because most people use "transistor" to mean something else.

Steve

8

Hi,
Sorry I missed the link to tutorial.

I am using PN2222, it's a MOSFET.

9

ssdesign:
I am using PN2222, it's a MOSFET.

A PN2222 is a common bjt transistor (not a mosfet), and only good to switch a few hundred mA at the most, depending on the base current.
Certainly not ok for a motor with a stall current >0.5Amp and an Arduino 101 with 'weaker' 3.3volt logic.
Leo..

10

Thanks Wawa
Would you know which MOSFET would be right for this motor?

11

There are not many through-hole mosfets for 3.3volt logic.
Adafruit claims this one is.
Don't forget the back-emf protection diode across the motor.
This page (first diagram) might help.
Leo..