trigger help please

[carlos flores]

i have been dealing with the program all day long and finally got it
working..... first is it normal to present changes when nothing plug
to the arduino explample if i move arduino i get changes in the graph
it is normal??..

second: tha led of arduino are orange i belive they are waiting for
trigger right???? but what is the trigger??? it is a voltage from 1 to
5 in pin AO??? if it is right it have to be from the sensor i want to
mesure or its a voltage example a battery an tehn i connect to A1 the
sensor i want to messure????
if its a voltage needed for working may i take it from arduino 5v
supply????



hope u answer me

[Raul Aguaviva]

Hey I am glad you got it working!

So yes, if the ADC is not plugged to anything it may behave as an antenna and catch some electrical noise.

The orange led means it is waiting for the trigger, that is correct.  

The wikipedia will explain what that is much better that me so here is the link:

http://en.wikipedia.org/wiki/Oscilloscope#Sweep_trigger_controls

As a quick thing, if you set it to 0 it will work in continuous mode.

I hope this helps! Congrats for getting it it working! :-)

Raul

[carlos flores]

hi, also i would like to know if i can post it in arduino
playground.... i believe its and amazing aplication cos not everybody
has an oscilloscope... and for small projects witch involve meassures
with it this its more than perfect....

[Raul Aguaviva]

Sure, the whole point is to give everyone access to an oscilloscope for small projects.

Feel free to send me the link to your page!

Thanks!

Raul

[carlos flores]

thanks by th end of the week i would have wrotten the whole guide alsa
with faqs for those like me wich are newbies.... an amazing project
the i have seen