Author Topic: motors of the 40$ robot!! (Read 4502 times)

mohamed · « **on:** February 16, 2008, 03:28:28 PM »

now after i complete the cerciut wireing and i connect the motors it doesnt move as it like the motor doesnt get any power only the green,red and blue LEDs are working but the motors doesnt
i connect the motor to pin 3 and 6 and the other one to 14 and 11 can anyone tell me what is wrong plz coz i spent alot of money and work on that project and it's so dissapointed to not to work

Pratheek · « **Reply #1 on:** February 16, 2008, 09:22:18 PM »

I think you have not connected the output of the sensors to the L293D.
Post pics of your circuit if possible so that I will be able to help you better.

hate_forever143 · « **Reply #2 on:** February 16, 2008, 10:33:57 PM »

hi dude...
same problem here...
motors are not working even though the leds are glowing...
my competitions is on the 20th
if you find a solution just notify me 2....

airman00 · « **Reply #3 on:** February 16, 2008, 11:00:14 PM »

Do you have a multimeter or a volt meter at hand?

mohamed · « **Reply #4 on:** February 17, 2008, 03:15:34 AM »

yea i have multimeter
i'll try to post any pic today

mohamed · « **Reply #5 on:** February 17, 2008, 04:30:47 AM »

here is pic for my connections

Pratheek · « **Reply #6 on:** February 17, 2008, 05:52:01 AM »

Couldn't find any mistake in your circuit. But i'm not sure of the connections of the L293d.
Can you post the close-up pic of the L293d connections?

mohamed · « **Reply #7 on:** February 17, 2008, 06:36:46 AM »

here is a close pic to the L293D connection

Pratheek · « **Reply #8 on:** February 17, 2008, 08:45:26 AM »

Have you connected the motor wires to the L293d?(They are not seen the picture)

mohamed · « **Reply #9 on:** February 17, 2008, 08:55:44 AM »

i connect the motor to pin 3 and 6 (-ve pole to pin3 and +ve pole to pin 6 ) but it doesnt work

Pratheek · « **Reply #10 on:** February 17, 2008, 09:48:46 AM »

What about the other DC motor?
You have to connect one dc motor to pin 3 and 6 and the other to pin 14 and 11.

mohamed · « **Reply #11 on:** February 17, 2008, 10:26:08 AM »

i solder both of them and nothing happened plz tell me what to do?

mohamed · « **Reply #12 on:** February 17, 2008, 11:40:51 AM »

could anyone tell me what is wrong wiz this connection
here is a question do i have to solder pin 3 with pin connected to the male header same goes with the other pins or not?
PS: lots of ppl facing the same problem so plz dont ignore

paulstreats · « **Reply #13 on:** February 17, 2008, 06:07:17 PM »

could you post a photo of the top of the board aswell please so we can see how the polarity of the components are thanks

mohamed · « **Reply #14 on:** February 17, 2008, 11:35:16 PM »

here is the top

Pratheek · « **Reply #15 on:** February 18, 2008, 05:43:48 AM »

From the picture which shows the top of the board, I see that you have not connected the sensor outputs to the L293d through the header pins. The procedure to do that is given at http://www.societyofrobots.com/member_tutorials/node/66

mohamed · « **Reply #16 on:** February 18, 2008, 10:01:11 AM »

i did solder them coz i didnt find these sockets that attached to wires
but there is sth happened when i remove the two wires near the capacitor (to make the robot move white line follower) i was testing with one motor and when it moved i attached the other motor but when i switched on the ciruit again ,both motors weren't moving so what wronge happened?!!!

PS: do the motors need more voltage like battery of 12V or what?

Pratheek · « **Reply #17 on:** February 19, 2008, 06:11:09 AM »

What are the ratings of the motor you are using?
And also what is the specification of the battery you are using?

mohamed · « **Reply #18 on:** February 19, 2008, 10:46:06 AM »

i'm using a 12v motor but it didnt say how much in the amps but it's number is (MMI-6S2L)
and i'm using a 9v eveready

Admin · « **Reply #19 on:** February 22, 2008, 06:03:49 AM »

Quote

i'm using a 9v eveready

Thats partly why its not working. You need a much better battery, like a NiMH or NiCad. A 9V probably can't power your motors.

News:

Author Topic: motors of the 40$ robot!! (Read 4502 times)

paulstreats