Two Questions RX2C chip / Stepper Motors

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Hello,

I just started learning how to use an Arduino and I would like to try my hand at building a couple different robots.

Question one:

Is there a list of vendors that use the RX2C chip in their RC cars? I would like to purchase a sub 10 dollar RC car and would like it to have the RX2C chip  but I don't know what to look for.

Question two:

I have this chassis http://www.aliexpress.com/item-img/Free-shipping-brand-New-Programmable-robot-Mobile-platform-2WD-robot-chassis-kit/640839982.html and it has two stepper motors. Would I be able to swap them out for normal DC 130 size motors in an effort to build a faster moving robot?

 

Thanks!  

2

That is interesting, I

That is interesting, I ordered it off Ebay and the seller said it has stepper motors, which is fine for a first experiment. The chassis is with a postman somewhere, so I will have to wait to confirm which it has.

 

3

That is awesome about the

That is awesome about the motors! I was actually starting to have some buyers remorse. As for the rc car, my goal is put a ping sensor on it make him an obstacle avoider. I want a smaller vehicle so my kid and I can deploy him in the house. 

 

4

Re: RX2C

I will go out on a limb and say many if not most of the cheap toy RC vehicles use something similar to the RX2C. So similar that the pin outs will be almost the same. You should be able to find the chip pin out online if it is not the RX2C.

I forgot to add that you can probably locate the RC vehicle at a Goodwill or similar store for a few dollars, especially if you are looking for something without a remote.

5

Thanks for the help so far!I

Thanks for the help so far!

I was able to secure a cheap RC truck to convert to a Arduino Ping/obsticle avoider.

It has a 2007 new bright r288-2 0214 chip set inside.

I don’t see an Identifiable H Bridge like the other 2007 new bright r288-2 series hacks I have found on line.

So would it wise to just use a motorshield to interface with this vehicle?

Or does anyone have a handy guide to reverse engineering?

I am pretty new to this, so consider my skills very very low! 

6

I included the link to the

board_schematic.jpg
board_schematic.jpg3648×2736 1.17 MB

I included the link to the site the image came from. Just click the image. The linked page suggests the r288-2 chip could be a house branded RX2.

Let us know if https://www.robotshop.com/letsmakerobots/node/26905 helps.

7

UPDATE!

So I got my motorshield and pulled the factory board out and added a 6.0v battery box to the obstacle avoider chassis.

Something went awesomely wrong!

I had made an obstacle FINDING Robot. 

It circled around the garage untill it saw something then started to ram what ever it saw! :smiley:

Thanks again for the help!