No you do not. I found that if you drove the vehicle a short distance (5 feet) the 'Guino would show a reading. If the V resistor was mis adjusted the signal out is a flat line and the 'Guino shows 999. Just adjust the pot until you see a display and move it a little more to be sure that it is stable.
I'm going on a trip this weekend and I'll report how it works. Right now I am happy with the results.
By the way, this kit is a dream to put together, well designed. It really makes sense to use it.
Cheers
Quote:
Originally Posted by dcb
Do you need an oscilloscope to dial in the jcar module?
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