PiBot-A

Let's Make Robots Robots
2

Hi Mosmas. Nice bot.

You should know I love RPi. I actually own one. Unfortunately all the RPis I own are B+ but cool nice bot.

3

Wow

Wow, I wish I’d thourght of using  PI befor I commited to my arduino… I might have to use a pi in my second robot.

How long did it take to make?

4

PiBot-A with Model B+

Thanks for the feedback. With (only) little changes to the chassis it should work with Model B+ immediately.

5

Time to build

The most time consuming (about 20 hours?) task was to build the very compact chassis. (I’m not a mechanic and don’t have professional tools.) The software was easy to write. From installing the Pololu python library to making the bot some obstacle avoiding it took me 20 minutes :slight_smile: Just a few lines of python code, see robot-rt.py in the tarball that can be downloaded from my website.

6

No kidding I want one.

Where can I get one like seriously?

7

Want what?

Sorry - don’t know what you mean :o)

8

Great project, klasse Arbeit

Great project, klasse Arbeit :-) I like the compact build with no wasted space.

I just checked your website and think you should write some of it here too, you know that besides me and a few other German speaking dudes the most of the guys here using google translate and that’s not really a reliable tool.

9

Sorry are these for sale?

Are these being sold?

10

Mosmas made it

Mosmas made this robot as a personal project (I am assuming, please corect me if i’m wrong). The best way to “get one” woud be to follow his build instructions on his blog (http://www.retas.de/thomas/raspberrypi/pibot-a/)

 

Allowing for google translate errors, I found the instructions amazingly complete and easy to follow.
Enjoy ;) 

11

Now I got it :wink:

No, it’s not for sale. I made it by myself. I published a very detailed description with lots of photos on my website, unfortunatelly it is in German, because my English is rather poor. Next weekend I will write some hints for those who want to make a replica on this page. For now maybe this may help to rate the efforts for building it:

  1. The basic hardware (Raspberry Pi, Pololu module and motors) is plug & play.
  2. The basic software (which makes the wheels rotate) is already part of the Pololu kit.
  3. The additional software that I wrote is very simple and can be downloaded HERE
  4. The actual construction described on my website is pretty difficile and you have to work very meticulously. See photos.
  5. A complete shopping list for all parts is provided HERE

Summary: If you consider not to clone my very compact construction it should be rather easy to build a bot like this.

12

Google translate

Thanks! I hoped that it would be helpful despite of the errors.

13

Yes I should, …

… next weekend I will write some hints for those who want to make a replica on this page.

14

Want what?

Sorry - don’t know what you mean :o) [wrong place for this reply - see below]

15

very nice

very nice…love the compact design. :]

16

Done.

Hope this helps.

17

One of the reasons I like
One of the reasons I like large bots is because my mechanical skill usually isn’t up to making the wonderfully compact case like you did. So I just make it 12 inches in diameter and I can fit pretty much anything I want. :slight_smile:

Though yours looks better.

I’d congratulate you auf Deutsch, but my German is over 25 years old. I wish I had kept it up.

18

Vielen Dank
Vielen Dank for your kind words :slight_smile:

19

UPDATE

I added a video, some photos and information about the line follower mode.

20

Nice track (and music track

Nice track (and music track too :slight_smile: ).

I take a look in the code (clean and simple too) and +1 for encrypting name of this site into:

(L, M, R) = read_sensors()

I have one question, how do you achieve behaviour in the dead end of line? (The one in the right side of video, without black disc). I would expect the robot will continue straight to try to find corrupted line, but it turn back. Thaks.

21

LOL

(L, M, R) - didn’t notice that yet :wink:

“I would expect the robot will continue straight to try to find corrupted line” - me too :wink: I tested different length of the dead end: when the straight piece of the track is a little bit longer it behaves as you (and me) would expect. Currently the robot still has a little left twist when reaching the dead end, and I thought it was a nice alternative to the “railway switches”.