topic Re: Can FRDM-KL25Z control 4 different motor separately? in CodeWarrior for MCU

Can FRDM-KL25Z control 4 different motor separately?

yonggunlee — Mon, 18 May 2015 17:23:53 GMT

Hello

I am trying to work on controlling 4 different motors with FRDM-KL25Z board.

I have checked it only has 2 SPI, but I want to control 4 motors individuially, could you give me advice how I should set it up?

and how can I make the individual motor to read like "aaaabbbb" a for motor1 b for motor 2 in one code?

Re: Can FRDM-KL25Z control 4 different motor separately?

xiangjun_rong — Tue, 19 May 2015 03:09:27 GMT

Hi, YongGun,

Can you tell me the type of motor or the interface of motor, for example ACIM, PMSM, DC, BLDC, SR or stepper motor. I suppose you use stepper motor, if it is the case, what is the motor interface, in other words, what is the interface signals the motor has.

Can you give me your contact inf so that I can call you.

XiangJun Rong

Re: Can FRDM-KL25Z control 4 different motor separately?

Paul_Tian — Tue, 19 May 2015 03:31:11 GMT

Hi, Yonggun

You need to provide your motor spec to us. Then we can give you some solution on it. Thanks.

Best Regards

Paul

Re: Can FRDM-KL25Z control 4 different motor separately?

yonggunlee — Tue, 19 May 2015 04:13:21 GMT

Hello.

I am working on checking compatiblilty FRDM-KL25Z with AR.drone 2.0.

I assume it is four DC motors. It seems like I need to send signal through SPI port, but i dont know how I should because FRDM-KL25Z only has two SPI pins.

Re: Can FRDM-KL25Z control 4 different motor separately?

yonggunlee — Tue, 19 May 2015 05:13:24 GMT

Hello

What I am trying to do is that I want to test to see if thr FRDM-KL25Z is compatible with AR.drone 2.0

I think the motors are DC, but it has 5 pins.

Below are the pin information that I found

Pin 1 Battery 11.4V

Pin 2 VCC 5V (ATMega8a VCC Pin4+5)

Pin 3 TX+RX (ATmega8a Pin30+31)

Pin 4 IRQ to main board (ATmega8a PC3 Pin26)

Pin 5 GND

Pin 1 Red

Pin 2 White

Pin 3 Motor1=Yellow,M2=Orange,M3=Blue,M4=Green

Pin 4 Motor1=Purple,M2=Gray,M3=Brown,M4=Pink

Pin 5 Black

Re: Can FRDM-KL25Z control 4 different motor separately?

yonggunlee — Tue, 19 May 2015 15:50:43 GMT

The motor specs are below

MOTORS

Fly high. Fly fast. Far away from the ground.

4 brushless inrunner motors. 14.5W 28,500 RMP
Micro ball bearing
Low noise Nylatron gears for 1/8.75 propeller reductor
Tempered steel propeller shaft
Self-lubrificating bronze bearing
Specific high propelled drag for great maneuverability
8 MIPS AVR CPU per motor controller
3 elements 1000 mA/H LiPo rechargeable battery (Autonomy: 12 minutes)
Emergency stop controlled by software
Fully reprogrammable motor controller
Water resistant motor’s electronic controller

Also, I can see the 5 pins coming from the motor.

Pin 1 Battery 11.4V

Pin 2 VCC 5V (ATMega8a VCC Pin4+5)

Pin 3 TX+RX (ATmega8a Pin30+31)

Pin 4 IRQ to main board (ATmega8a PC3 Pin26)

Pin 5 GND

Pin 1 Red

Pin 2 White

Pin 3 Motor1=Yellow,M2=Orange,M3=Blue,M4=Green

Pin 4 Motor1=Purple,M2=Gray,M3=Brown,M4=Pink

Pin 5 Black

These are the pin information that I found.

I want to control them with FRDM-KL25Z board and fly it.

could u give me some advice?

Re: Can FRDM-KL25Z control 4 different motor separately?

yonggunlee — Tue, 19 May 2015 15:52:34 GMT

Mr. XiangJun Rong

I live in US, and I don't know where you live, so it might not helpful to give you the call #.

my email address is yongari12@hotmail.com

The motor specs are below

MOTORS

Fly high. Fly fast. Far away from the ground.

4 brushless inrunner motors. 14.5W 28,500 RMP
Micro ball bearing
Low noise Nylatron gears for 1/8.75 propeller reductor
Tempered steel propeller shaft
Self-lubrificating bronze bearing
Specific high propelled drag for great maneuverability
8 MIPS AVR CPU per motor controller
3 elements 1000 mA/H LiPo rechargeable battery (Autonomy: 12 minutes)
Emergency stop controlled by software
Fully reprogrammable motor controller
Water resistant motor’s electronic controller

Also, I can see the 5 pins coming from the motor.

Pin 1 Battery 11.4V

Pin 2 VCC 5V (ATMega8a VCC Pin4+5)

Pin 3 TX+RX (ATmega8a Pin30+31)

Pin 4 IRQ to main board (ATmega8a PC3 Pin26)

Pin 5 GND

Pin 1 Red

Pin 2 White

Pin 3 Motor1=Yellow,M2=Orange,M3=Blue,M4=Green

Pin 4 Motor1=Purple,M2=Gray,M3=Brown,M4=Pink

Pin 5 Black

These are the pin information that I found.

I want to control them with FRDM-KL25Z board and fly it.

could u give me some advice?

Re: Can FRDM-KL25Z control 4 different motor separately?

xiangjun_rong — Wed, 20 May 2015 06:17:33 GMT

Hi,Yonggun,

As you said, the motor type is "brushless inrunner motors. 14.5W 28,500 RMP", it is a brushless DC motor(BLDC), the motor should have three power lines:PhA/PHB/PHC, in most case, the motor should have position sensor: Hall or Encoder. In conslusion, the interface of the BLDC should have the signal:

power lines: PhA, PhB, PHC, all are input pins,

The Hall sensor needs 5V power supply, so this is the sensor signals from motor perspective:

+5V Dc power line, input pin

GND

HallA signal, output pin

HallB signal, output pin

HallC signal, output pin.

The required resource of BLDC motor includes 6 PWM signals, three Timer with capture function to provide position and speed, ADC to sample Dc voltage and over current, PIT to generate interrupt with fixed cycle, SCI port to display parameter

If the motor type is BLDC, the FRDM-KL25Z can only control one BLDC, because the total FTM channels is 8+2+2=12, some of channels are used to capture hall sensor signals.

If the motor type is DC, it is dependent on the layout you are using, if you use H bridge to control a DC motor, you can control 3 Dc motor, if you use one PWM pin to control one DC motor, you can control 12 DC motor.

Hope it can help you

Xiangjun Rong