Let's Make Robots!

breadUino

This came up with the need of having the arduino permanently installed on the robots, I´m tired of having to remove the arduino from one bot to the other, and then rewire everything, and then reupload the code everytime I have a new idea, or everytime I want to show the bot to someone.
I followed the ITP Physical Computing tutorial, and it works like a charm, no I want to try to upload code with the FTDI cable, and If I have success on this I can start making my custom Arduino boards. :D

NOTE: Please don´t follow the foto as it is. A friend told me to power this circuit from the output of the voltage regulator. The way it is now will burn the chip!! Lucky me it doens´t happened! Tomorrow I will update the foto!

Foto updated!
A guy at the arduino forum told me to put a 100uf capacitor between pins 7 and 8.

The link below might be of interest:
Burning the bootloader without an external AVR-Writer

3266871132_50eaed0b32.jpg?v=0

 

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Its ineresting that you are able to get it working with a crystal on a breadboard. For the life of me, I couldn't get it to work on multiple breadboards with the 16mhz crystal. I had all caps, for it as well, pretty much like you have it....even tried it with 2 different procs and crystals. only after soldering it all to a board did I get it to work...
That is weird, it should have worked with you..  did you try a different setup?

The only thing I tried with this until now was blinking a LED, but soon I will try something more complex.. buttons, potenciometers, servo, sensors, L293D with motors, etc.. 

later I will put all the stuff on a pcb and see what I get    :-)

Like I said, two different setups, both didn't work. I checked all of the connections, made sure I was reading the schematics correctly, verified voltage to and ground points were connected correctly.  I thought I had some bad chips at first until I built the boards and mounted them in the sockets....they worked fine after that. I have the crystals that are 1/3 the height as yours..though I don't see how that could matter. I never tried my setups with the resonator because I had already built and soldered it to a board so I don't know if that would have made a difference.

 They work now so I'm cool with it.  :)

Solderless breadboards connection strips act as capicitors, which probably threw off the timing of the crystal oscillator. With the breaduino, getting the proc pins more directly coupled to the crystal pins (with a correct capacitance) the device can operate. Check the Limitations section of a Wikipedia article that says the stray capacitance limits operation to below 10 MHz.
Foto updated!

The link below might be of interest:
Burning the bootloader without an external AVR-Writer
That's exactly what I do with the picaxe ICs. I can't afford to buy starter kits for every robot I build. If I get around to using an Atmega processor then I'll do exactly the same thing.

 socket...

You soldered in a socket that let you easily move the chip...

 

/ vzz-clck-"Maneuver"

Thanks I was at the in laws all weekend and had just got home. After I logged out I thought of the word ;)

<--- master of the English language!

I started making my own circuit son perfboard and using a... crap I cant think of the word its late... The plastic thingy ([SIC] Frits) that lets you sodler it on a board and pop the chip off and put it back when needed. Someone will come up with the name my brain is fried. Anyway they cost 20 cents or less and let you keep the citcuit permanant but reuse your chips. Just pop it back on and reprogram with the code you saved. Takes 5 minutes or less to bring a bot back to life and saves $$$

 

EDIT: Found a link... http://www.radioshack.com/product/index.jsp?productId=2062603

Here's another quick option -- the DuinoStamp" from Spiffs. http://spiffie.org/kits/duinostamp/

 

16_place_atmega.jpg

For $4 the bare pcb is pretty handy. 

I haven't bought this specific board, but I have bought others. The quality is excellent. 

My preference is the Iduino from the same vendor. 

Myc