Author Topic: How to make alogrith for a artificial intelligence line follower.....?? (Read 15719 times)

newInRobotics · « **Reply #30 on:** October 28, 2011, 04:30:03 AM »

Quote from: RITESH29 on October 28, 2011, 04:17:10 AM

OK, you suggest me to buy which chargers
http://robokits.co.in/shop/index.php?main_page=index&cPath=13
Thanks

No, this is not the page You posted before, plus it's not even linked to the battery You want to use.

Quote from: RITESH29 on October 26, 2011, 10:37:58 PM

I will use 2 motors http://robokits.co.in/shop/index.php?main_page=product_info&cPath=2&products_id=247&zenid=982d36c3dbc1594633528a42af15cce2 of 375RPM and Li..battery http://robokits.co.in/shop/index.php?main_page=product_info&cPath=13&products_id=69&zenid=6ba297ea6900ec4fc09d1f8e8648af0b......

Do You remember this post? Good. Now, follow the link and read

RITESH29 · « **Reply #31 on:** October 28, 2011, 04:52:23 AM »

Quote

Do You remember this post? Good. Now, follow the link and read Wink

It show Compatible Chargers

* Li-Ion / Li-Po Intelligent Fast Charger for 2-3 Cell Battery(RKI-1122)
* Li-Ion / Li-Po 2A 3 Cell Fast Charger
* IMAX B6 5A Multipurpouse Battery Charger

should i buy that Rs 650/. cost one??

RITESH29 · « **Reply #32 on:** October 28, 2011, 05:20:39 AM »

OK, i have downloaded Google sketch up software also....

newInRobotics · « **Reply #33 on:** October 28, 2011, 05:22:14 AM »

Quote from: RITESH29 on October 28, 2011, 04:52:23 AM

It show Compatible Chargers

* Li-Ion / Li-Po Intelligent Fast Charger for 2-3 Cell Battery(RKI-1122)
* Li-Ion / Li-Po 2A 3 Cell Fast Charger
* IMAX B6 5A Multipurpouse Battery Charger

You've found it

Well done

Quote from: RITESH29 on October 28, 2011, 04:52:23 AM

should i buy that Rs 650/. cost one??

I believe You meant Rs 6500

It's up to You to decide. Description is very clear. If You need smart multipurpose charger, go for something like IMAX B6 5A Multipurpouse Battery Charger. If charger is going to be used only for Li-Ion packs containing up to 3 cells, then Li-Ion / Li-Po Intelligent Fast Charger for 2-3 Cell Battery is fully sufficient.

newInRobotics · « **Reply #34 on:** October 28, 2011, 05:23:34 AM »

Quote from: RITESH29 on October 28, 2011, 05:20:39 AM

OK, i have downloaded Google sketch up software also....

Good start. CAD skills are very useful to posses.

RITESH29 · « **Reply #35 on:** October 28, 2011, 05:37:23 AM »

One thing more charger are asking for input of 15v not 220V why??
Do you think the chargers deserve the cost or not??

RITESH29 · « **Reply #36 on:** October 28, 2011, 06:32:23 AM »

Here some CAD images please tell any changes to do........

newInRobotics · « **Reply #37 on:** October 28, 2011, 06:37:00 AM »

Quote from: RITESH29 on October 28, 2011, 05:37:23 AM

One thing more charger are asking for input of 15v not 220V why??

Both of them do not take 220VAC, only DC voltage is a suitable input. Suitable power supply has to be used in order to operate them.

Quote from: RITESH29 on October 28, 2011, 05:37:23 AM

Do you think the chargers deserve the cost or not??

Honestly, i don't know, as I never bought one. You can always look around the net and try to find something cheaper without sacrificing performance.

newInRobotics · « **Reply #38 on:** October 28, 2011, 06:39:42 AM »

Quote from: RITESH29 on October 28, 2011, 06:32:23 AM

Here some CAD images please tell any changes to do........

If You think that it's fine, then it is fine. You do realise that frame you've designed is not symmetrical, don't You?

RITESH29 · « **Reply #39 on:** October 28, 2011, 06:45:28 AM »

Quote

If You think that it's fine, then it is fine. You do realize that frame you've designed is not symmetrical, don't You?

As it was my first attemt to use the CAD i can see it is not geometrical ......

Please tell any changes to do in the designing making it more col.

newInRobotics · « **Reply #40 on:** October 28, 2011, 06:51:09 AM »

Quote from: RITESH29 on October 28, 2011, 06:45:28 AM

As it was my first attemt to use the CAD i can see it is not geometrical ......

Please tell any changes to do in the designing making it more col.

I told you already, it's not symmetrical, hence it has to be fixed. Moreover, as posted before, have a look at what designs other people have used for their line followers, then try to achieve something similar.

RITESH29 · « **Reply #41 on:** October 29, 2011, 10:52:21 PM »

Updated images:-

RITESH29 · « **Reply #42 on:** October 31, 2011, 10:49:43 AM »

Will this model work fine for a line follower...??

newInRobotics · « **Reply #43 on:** October 31, 2011, 11:01:10 AM »

You are fast, well done

Does it have a caster wheel at the back?

What are You going to use for line recognition?

RITESH29 · « **Reply #44 on:** October 31, 2011, 11:10:17 AM »

Quote

You are fast, well done Smiley

Hi again,

Do you like it??

Quote

Does it have a caster wheel at the back?

Yes, off course..!!

Quote

What are You going to use for line recognition?

The length is nearby 14cm (140mm) and breath is 12cm ( 120mm)....

OK< the circuit you can see in image is LM339 ( Quat op-amp) ...
with 100K variable resistance act as i Wheatstone bridge to terminal of op-amp....

and uC is quick start board containing propeller chip...( spin code)
and sensors are LDR with green LED's.

Gertlex · « **Reply #45 on:** November 01, 2011, 08:10:18 PM »

To briefly comment on your question about whether your chassis is good... I've seen pretty much every possible robot configuration used for line following (even hexapods). So ya, that looks like a nice simple and easy to work with chassis to throw the electronics on.

RITESH29 · « **Reply #46 on:** November 02, 2011, 09:02:07 AM »

OK, i am using L298 chip for h- bridges any suggestion will be appreciated..!!

Thanks

RITESH29 · « **Reply #47 on:** November 02, 2011, 10:34:52 AM »

Hi,

I have got L298 chip for h- bridges the problem is what the use of logic supply pin 9voltage??
Is that mean at what logic the bridges will work If yes then i have connected to 5V..
and current sensing pin 1 to GND without any resistance...
Out put 1 and 2 to motor terminal just for testing small motor pin 2 and 3...
and input spin to GND and Vcc for testing pin 5 and 7...
till now i am not using output 3 and 4....
supply voltage is 12V 800mA max.

edited: the problem is the motor is not rotating...

RITESH29 · « **Reply #48 on:** November 03, 2011, 01:24:34 AM »

OK, the output from pin 2 and 3 is rising properly but the current is very low when i connect the load like buzzer and motor the voltage level decrease to 1V or less and motor does not seems work...........
same with buzzer very less sound..!!
pls suggest me what to do??
I have connected pin 1 and 15 to gnd with resistance and with out it also but no changes were seen.

pls reply soon...........

newInRobotics · « **Reply #49 on:** November 03, 2011, 02:21:28 AM »

According to L298 Datasheet You should connect pins as follows:

Pin 4 (+Vs) goes to 9V power supply (or whatever voltage You use to run motors)
Pin 9 (+Vss requires regulated voltage not exeeding 7V, so if Your uC runs on regulated 5V, also feed it to H-bridge.
Pins 1 & 15 (SENSE A & SENSE B) go to GND, no resistor is needed if no current sensing is performed
Use Pins 2 & 3 (OUT1 & OUT2) to connect motor1 and Pins 13 & 14 - motor2.
Pins 6 & 11 (EnA & EnB) must be set high in order to enable H-bidge A & B respectively.
Set Pin 5 OR 7 (In1 OR In2) to run motor1 (Pin 10 OR 12 - motor2) to one side OR the other (NEVER set both Pins high at the same time)
Pin 8 goes to GND.

RITESH29 · « **Reply #50 on:** November 03, 2011, 02:34:45 AM »

Quote

Set Pin 5 OR 7 (In1 OR In2) to run motor1 (Pin 10 OR 11 - motor2) to one side OR the other (NEVER set both Pins high at the same time)

First thanks for reply.........

OK, the i have done both pin higher just for checking....!!
after that i have connected one to -ve 5V and another to GND vice versa.

the voltage on multimeter is working well but i think current is very low.....i think in few mA...

RITESH29 · « **Reply #51 on:** November 03, 2011, 02:58:12 AM »

pls help.............

newInRobotics · « **Reply #52 on:** November 03, 2011, 03:15:59 AM »

Quote from: RITESH29 on November 03, 2011, 02:34:45 AM

Quote
Set Pin 5 OR 7 (In1 OR In2) to run motor1 (Pin 10 OR 11 - motor2) to one side OR the other (NEVER set both Pins high at the same time)

First thanks for reply.........

OK, the i have done both pin higher just for checking....!!
after that i have connected one to -ve 5V and another to GND vice versa.

the voltage on multimeter is working well but i think current is very low.....i think in few mA...

I meant Pins 12 OR 10 (NOT Pin 10 OR 11) to run motor.

Can You sketch (with circuit designer if possible) current configuration You have, so I can see what You have and what might be wrong?

What motor are You using?

RITESH29 · « **Reply #53 on:** November 03, 2011, 03:24:27 AM »

Hi again,

I am using past motor only ( given link in past post) any way its stall current is 700mA..
and i am using first bridges....
not the end one that you are talking about pin 10 and 12.

newInRobotics · « **Reply #54 on:** November 03, 2011, 03:29:22 AM »

Did You set Pin 6 high?

How many power supplies are You using?

RITESH29 · « **Reply #55 on:** November 03, 2011, 04:12:28 AM »

OK, thanks for guiding.....

The chip is working it was soldering problem..

so, i have 3 op-amp i want to use it to raise the 3.3v to 4.2V at least to drive the l298 chip....as uC output is 3.3V ( it work on 3.3V propeller)

newInRobotics · « **Reply #56 on:** November 03, 2011, 04:24:32 AM »

3.3V should be enough, as anything above 1.5V is logical 1 (high) for L298.

If it was soldering problem, did You fix it? Is it working as it is supposed to work now?

RITESH29 · « **Reply #57 on:** November 03, 2011, 06:29:53 AM »

Quote

If it was soldering problem, did You fix it? Is it working as it is supposed to work now?

OK, now again after fixing it....when i connect the enable to gnd motor still run in same direction....
pls post a simple circuit!!

It is going over my head...
thanks

newInRobotics · « **Reply #58 on:** November 03, 2011, 06:49:49 AM »

Quote from: RITESH29 on November 03, 2011, 06:29:53 AM

when i connect the enable to gnd motor still run in same direction....

Enable (Pin 6) has to be connected to 3.3V, otherwise it will not work.

When ^{In1 (Pin 5) is HIGH - 3.3V} and _{In2 (Pin 7) is LOW - 0V} --> motor spins to one side.

When ^{In2 (Pin 7) is HIGH - 3.3V} and _{In1 (Pin 5) is LOW - 0V} --> motor spins to the opposite side.

Also, did You connect 4 diodes to motor terminals as shown in L298 Datasheet - Page 6, Figure 6?

Edit: Some useful info about L298 can be found in Experiment 7 - Bi-directional Control Of Motors And The H-Bridge page.

RITESH29 · « **Reply #59 on:** November 03, 2011, 10:10:00 AM »

OK, now 298 is working as i want but should i connect any resistance or buffer to 298 enable and input pins???
while connecting uC to 298 directly will cause any hazard or not??

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Author Topic: How to make alogrith for a artificial intelligence line follower.....?? (Read 15719 times)