In here http://megasquirt.sourceforge.net/extra ... wheel.html
I see two values shown for the input resistor on the VB921. Anyone know for sure if the right value is 330 or 680 Ohm, or even if it matters? It seems to work on the bench with either but I would rather not find out I got the wrong one on a rainy night in northern england. Looking at the data sheet for the chip I'm not convinced it needs a resistor at all as it is logic driven and "requires no external components" but I would be guided by anyone with some experience of this setup.
Jon
input resistor for VB921
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.