K243 high power dc speed controller , trouble

Community General Discussions
1

well, i bought a couple of speed controllers a year or 2 ago ( same ones oddbot's Boozebot used )

http://secure.oatleyelectronics.com//product_info.php?cPath=94&products_id=206&osCsid=97e420b

and i had them working with the 10k trimpot, but when trying to control them with arduino it wont work 

mysetup: 9v battery to +,- on the screw terminals , arduino pin to sig, motors attached correctly , and secondary power supply on mtr+,gnd

any suggestions?

update: 

i got it working, partly my setup was wrong and partly my arduino coding was off , and oddbots tip worked

 thanks :)

S5000742.jpg

thats how they go on the board :P

 

 

2

Did you connect the ground
Did you connect the ground of the Arduino to the ground of the board?

3

yep
yep i did, nothin, the intsructions say to link terminals a and c , so i do that. but if i connect power to the board while a and c are linked the motor runs on its own

4

**ok, **
do i still, provide 8v as i would with the pot?

5

K243 motor controller with arduino

Thanks dimble swishblade!!!

 

Now I know where to solder the 4 MOSFET’s finally!!! :) 

 

But where do I connect the main supply? MTR+ and GND?? Screw the wires?

 

How about the positive and negative wires of my DC motor? Where do I connect it on the board?

 

Thanks So much dimble swishblade…

6

@ ferari

2) i have no yellow cap only to greens so im not to sure?

3) im setting mine up again , but i think  the motors wires got to mtr1, mtr2 , ill just check that .

7

yep

motor wires go to mtr1, mtr2 , good luck, hope it helped 

8

i had

trouble getting it working with arduino ,so ill try and find my code to help u :slight_smile:

9

Arduino Control

 

It will be of great help If I can see your code :slight_smile: Actually, I will control it also using my arduino, did you manage to control the speed and direction?

How did you do the braking of the motor? 

 

Thanks,

10

motor wires

 

Thanks dimble :slight_smile:

SCREW CONNECTORS

So I will connect my battery to MTR+ ( positive wire) and GND ( negative wire) is that correct?

How about the MTR1 and MTR2? Are these terminals positive or it changes? Where will I connect the positive wire of my DC motor? Where will I hook up the negative side of my DC motor?..

 

Hope for your reply

Regards

 

Thanks

 

11

**sorry **

sorry i wasnt clear, i think the motor connects to mtr1 and mtr 2, it doesn’t matter which way.

as i say, im not quite sure its been along time since i used this , u should check ur instructions just to be sure . :slight_smile:

 

 

12

ok

i cant find my code , but what u need to do is, ( assuming u have some experience with arduino) 

1. set up motor drive acording to RC control, so have terminals A andC linked, ground of the board linked to adruino’s ground , and terminal SIG connected to an arduino output pin .

(once again check ur instructions, i may be wrong)

2. write a simple arduino code useing the AnalogWrite command look at this page ://www.arduino.cc/en/Tutorial/PWM

your code should be sending out a 50 % signal ( analogWrite(127) )

3. run this program and using the pots on the board ( vr1 vr2) adjust these until the motor idles.

U have now successfully  centered the motor ,

4. write a new code, using different values of analogWrite , use smaller or bigger numbers ie ( 100, or 200) 

u can now control ur motor :) 

13

ok

 

Thanks dimble:)

I wired my motor to mtr1 and mtr2 and the 24 volt power supply to GND and MTR+…  I tried to connect everything without the 1-2ms input attached in the SIG and GND and my motor didn’t work…

Maybe it needs the 1-2ms input to make the motor run? to open up the MOSFET gates?

 

Hope for your usual support,

ferari :slight_smile:

 

14

yep

i would think so, signal and ground are the power supply to the board ,without it it does not run

have you set it up to work of a 10k pot yet? if so i would try this.

if u have ,then for testing with arduino i would use a small 10-12v motor and maybe a 10v power supply,  just in case u set it up wrong , and blow the board or arduino :stuck_out_tongue:

15

yep

 

Thanks dimble :slight_smile:

I haven’t set up the 10K pot yet… I will try it and update you

I will use 12 volts then for the motor…

Have you had success in using the analogwrite comand in arduino in controling the speed and direction of the motor?.. :slight_smile:

 

Hope for your usual support

Regards,

ferari

16

yep

with the analog write command i have had success ,

as i said use a 50% signal, then centre the motor , now u can control the speed 

ie if u use a 25% signal the motor will go at half speed one way, and if u use 75% signal it will go at half speed the other way

and 50% should be centre .

17

yep

 

Thanks a lot dimble, I really appreciated it… I will update you of any movements :slight_smile:

Thanks so much

ferari

18

Yep

 

 Hello Dimble,

I have yet to try your code… 

just being curious, why didn’t you use servo codes? http://www.arduino.cc/en/Reference/Servo  or is it recommended to use analog?

 

Thanks

ferari

19

um

i dont know , i just tried it that way , but servo commands would work as well

20

um

Thanks Dimble :slight_smile:

For the 10kohm potentiometer, I will connect  the pin 1( Left most pin of potentiometer) to B , pin 2 ( middle pin of potentiometer) to C, and pin 3 to D right? Then I will check first if the board works fine…

and If everything is fine then I will start to input the 1-2ms from my arduino :) 

 

Regards,

ferari