Mark from SpikenzieLabs figured out how to get 2 extra pins from his Arduino! He simply removed the crystal and associated capacitors and used the internal RC clock rather than the external crystal! Did it work? Watch the video to find out!
[Source] SpikenzieLabs Blog
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I dont know much about the arduino, but Im used to PIC microcontrollers, and I think this is kinda bad idea since serial communications needs a strict timing , hence the need for the crystal and caps, the internal osc isnt that precise. just my opinion and Im not sure if its the same way with arduino.
By cae2100 on March 22, 2012