Let's Make Robots!

Name of parts for a project, help needed

I need help I want to make the quadruped of studikasus.

I am very new to robotics

link: http://letsmakerobots.com/node/34412

In the list of components he mentioned RST, GND/BLK Prog., A5 A4 A3 A2 A1 A0 AR,J, 7805 and I am not able to understsand the names of components, I have tried to contact him but he doesn't reply back and also I want to know what diodes he has used, so that his servos do not heat up.

Please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please

I need help Quickly, Any one Help

THANKS

( attachment is is not mine, it is studikasus)

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Quadruped_Circuit_Board.pdf43.82 KB

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Sorry I dont know what are those pins

When you opened the sketch, what did you find? Was there not a routine to read the sonar sensor? How about any pin definitions? Typically, sonar sensors use a trigger and a echo, what there anything in the code called "trig" or "echo"? 

If you look for everything with "pin" in the name, within the code, can you figure out the sonar pins via the process of elimination?

Sorry I tried a lot but was not able to find the pins can u please help me.

Thanks

He also has an ultra sonic sensor, where should I insert it on the pcb?

Awesome! Sounds like you are all set. You just need to talk to your PCB friend and see what kind of files he needs and then some laser cutting time. 

Congrats.

Thanks for the components list.

My friend makes a pcb of 7$ with soilder resist. I can also get it laser cut for FREE(from neighbour) (only have to buy the board) and he has included the design files. He also included the code.

My doubt is in which format are the gerber files, in the download he included EPS,CMX,CDR extension files.

Thanks

He used 2 diodes in series to get a voltage drop so that he could run his 6v servos off of a 7.4v Li-Po. While there are certainly other approaches to the problem, you would need to select diodes that are rated for the current being drawn through them.

@Chris: "...to save you a bit from the other guys..." don't scare bunty150, we are not noobs-eater :-) but you hit the point :-)

@bunty150: Chris is right, use google for checking your questions first, THEN and only if you could not found the right answer (mostly you will end in some forum like LMR by hitting the link in the search results). And he's also right by suggesting to start with the basics, so so don't get lost and you will understand everything much better. 

Sorry, I just went and took a look at the little quadraped there... In addition to what I said above, that particular quad is probably not the one to go with...

First off, it is laser-cut. You will need access to a laser cutter and you will need his cut files (which don't seem to be included with the post --you would have to re-draw the design)

Next is the fact that it uses a custom PCB. He mentions it in the post --how he found a small-batch guy to fabricate it for him. You would need this board to be fabricated, but before that, you would need his Gerber files. The PDF he has posted will not work. If you could get a hold of this board files, you would be looking at maybe 5 or 6 weeks to get a board done, you would have to buy 10 of them, and it is going to be a few bucks --its a pretty big board.

Finally, I thought it may be a good idea to save you a bit from the other guys. The worst thing you can do around here is ask a question that can be easily googled. Out of curiosity, I googled all of your "parts" and added "Arduino" to each search. --I didn't ever have to hit enter. Every answer I needed (to tell me what all those "parts" are) I got from Google's auto-fill feature. Each item only needed to be typed in about 1/2-way before the auto-fill told me what it was. I didn't even have to fully-google anything.

This is really the first lesson of robot making --you gotta become a really good information-seeker, really fast.

It may not be a bad idea to watch the first video here.

Before you go out and start dropping a bunch of dough on parts, it may be wise to simply spend some time looking over some projects on LMR. It would also be a great idea to go over the Start Here Robot --it does not matter if this is not the robot you want to build, there is just a lot of great information there. 

I feel that you may need to get some basics down, in that only one of the items you mention is a part. 

  • RST is reset and is a pin on the arduino
  • GND/BLK is ground and black --its color
  • Prog is short for program --probably a pin
  • A5-A0 are analog input pins
  • I have no idea what AR and J are --probably just variable names maybe?
  • Diodes may or may not be connected with the heating-up of servos
  • Finally, the 7805 is the only part you have there, it is a voltage regulator and is available everywhere

For now, I would suggest getting a cheap arduino board, a few LED's and a couple cheap servos. Get the LED to blink and the servos to sweep back and forth. This is where you start.