My Arduino Ping Display Robot

Goals

Hello all.
I hope to please share a little robot that I have just finished building.
There are many Ping Boat, perhaps with a tutorials and display less so without pretension, will illustrate what I could do.
I gave myself the goal of realizing a robot that avoids obstacles, hence the use of Ping, who had more autonomy (and less hassle to reload always stylus) and displayed on a LCD display the distance measured obstacle.
The tutorial is directed for beginners but with knowledge of electronics and Arduino programming.

Step 1: List of Materials

1 - Arduino UNO or compatible
2 - Module OCTAGON GioBlu Robotics http://www.gioblu.com/prodotti?page=shop.product_details&flypage=flypage_images.tpl&product_id=136&category_id=60 or other frame
1 - Ping))) Parallax  mounting bracket kit http://www.parallax.com/Store/Robots/AllRobots/tabid/755/ProductID/248/List/0/Default.aspx?SortField=ProductName,ProductName
2 - Servo motors with 360 rotation , in my case HSR-1425SCR
2 - 6 cm wheels with rubber no-slip
1 - std servo for the Ping (in my case is not required but can be implemented)
2 - servo brackets Gioblu Robotics http://www.gioblu.com/prodotti?page=shop.product_details&flypage=flypage.tpl&product_id=78&category_id=34
4 - PCB spacers from 4 cm http://http://www.robot-italy.com/product_info.php?cPath=7_135&products_id=1189
2 - protoschield for servos, battery and display and added  http://www.robot-italy.com/product_info.php?products_id=879(or other sites)
1 - 16x2 HD44780 compatible LCD Display http://www.robot-italy.com/product_info.php?cPath=59_194&products_id=237
1-  potentiometer
1 - 9v battery holder
1 - 2s Lipo 1200mAh 7.4 v
1 - UBEC 5.4 / 6V http://www.cnchelicopter.com/servlet/the-1528/hobbywing-UBEC-dsh-3A-(2-dsh-6S-Lipo/Detail
1 - pivot wheel
1 - piece of matrix board for the display shield
- some strip for shield
- some screw patience and passion..

Comments

[pe2hlc]

Hallo very nice im have the 4 wd robot with 4 motors and i will the distance on the display like your robot. please help me with the code. Rinus The code for the 4wd robot : http://www.akeric.com/arduino/robot_4wd/robot4wd_06.pde thank you

[pe2hlc]

Hello Cello 62

Were dropt im the code's from the lcd in the code from akeric? I'm try many times but it dont work .
When the distance is very well, the motor don't work,please help.

[Cello62]

Sry, i don't understand your english, "were dropt im the code's from the code from akeric?". Who's akeric? I've posted the code above, try to have a look at it it very simple, or i suggest if you wanna have another code try to post it in a Arduino forum.
Regards

[pe2hlc]

Sorry for my english here you'll find the code of Eric
http://www.akeric.com/arduino/robot_4wd/robot4wd_06.pde
Where do I place the code of the lcd distance in the code of Eric thanks.
Rinus

[Cello62]

I suppose you have to use g_cm or gcollidedistance variables.
Try to put the code after the variable are on, (// Do stuff, based on the current mode step), to see which value the ping read. Use a tutorial of lcd display to initialize a variable. This is all i can do . Regards

[pe2hlc]

mail
[e-mail]
Regards

[Cello62]

You need to study on any Arduino tutorial how to see a variable in the display. Once connected the display, is a very simple code, look that I've already done in the tutorials:
lcd.clear();
lcd.setCursor(0,0);
lcd.print("OBSTACLE cm ");
lcd.print(timecount/10);
You need to associate the name of the variable to the command by placing the string depending on the pixels you have available on the display

[pe2hlc]

Hello i have you sketch from jou site applied, when checking i have an error message, i put at the end of an extra } applied, At the start-up is running the servo a moment, and the two engines one on the left and the other to the right that continue to rotate. The ultrasonically pings 1 times and then do nothing. The display shows (obstacel 0 cm) what can be wrong? Have the ultrasonically tested works well.
Greeting
Pe2HLC

[Cello62]

Dunno. Very difficult to answer. My sketch is one found in several tutorials on web. Check all connections well first.

[Higgs Boson]

Very cool. I really want to make a robot like this but ping sensors are somewhat expensive. I'm thinking about getting an infrared rangefinder.

[Cello62]

Ty for your comment. I'm agree about is more expansive, however now does it cost 29$ and belive me you got a sensor more accurate than infrared.

Remember to vote me please!

[emdarcher]

you could actually use the cheaper $9.95 HC-SR04 ultrasonic rangefinder, which works like the ping))) but is cheaper and has a much easier to use library. i chose this sensor over the ping))) and have been happy with it so far.

[danilo.bar1]

I saw the video.
Is desired that robot tends to curve to the right?

however, very interesting project.

Good Job!

[Cello62]

It is true slightly, depending on the speed of servo rotation, but is not important.
Thanks for your comment

[danilo.bar1]

^_^