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Topic: arduino on breadboard (Read 1 time) previous topic - next topic

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hi guys...
I have an arduino ATmega 8... say if i want to make a arduino 4m scratch and i have the Atmega 8 chip alone.... wat r the things i would need more to make one myself on a breadboard? would i be able to program the IC the same way in breadboard as wen we do it in the arduino board??
i have already seen this.... but not much help showing the ckt...
http://blog.makezine.com/archive/2007/07/barebones_arduino_on_a_br.html
can i replace atmega 8 with atmega 16 or atmega 168 without changing anything??
thanx in advance...  :)

GordonEndersby



I dont think you followed the link to the full article just below the description.
http://www.uchobby.com/index.php/2007/07/01/ardunio-breadboard/

Once you have built one theres no reason not to be able to do everything you would normaly do with a proffesionaly built Arduino board.

Ive just built one from this:
http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard
It took about half an hour.
Im waiting for a usb to ftdi adaptor so I can program in situ.
Once I have that its all done and Ill transfer it to stripboard with a realtime clock circuit for something I want to build.

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thanx buddy... :)  can anyone plz tell y we r using a oscillating crystal??? wats its use???

GordonEndersby


The atmega has an on board crystal but it only runs at 8mhz I beleive.
To run at 16mhz it needs the external crystal.

If you are asking why its has a crystal at all.
It provides the ticks that make a microcontroler work.

Gordon

kg4wsv

It doesn't have a crystal built in; it does have an RC (resistor-capacitor) oscillator.  An RC oscillator is much cheaper, much less precise, and more susceptible to temperature changes than a crystal.

-j


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