Problem with connecting to megasquirt

maddios · Post by **maddios** » Fri Jun 09, 2006 11:45 am

Hi speaking of battery voltage, I have a v3 MSII, and the battery meter reads about 12.1-12.5v while car is running, that can't be right can it? or is this just current limiting in action?

hyperman · Post by **hyperman** » Fri Jun 09, 2006 12:04 pm

lance wrote:hyperman,

Right click on one of the gauge in MegaTune, and swap to voltMeter. Then that gauge will tell you what MegaTune thinks the voltage is.

If it is below 10 Volts (8 on the stim) then look closely at R3 and R6 to make sure they are the correct values, properly soldered, and not solder bridged to adjacent components.

However, if the actual voltage is good, you can ignore the 'voltage too low' warning - I do it successfully on my alpha GPIO board all the time (it doesn't have a battery voltage circuit yet).

Lance.

Lance,

I'm not so into transistors and stuff, but i'm getting the feeling one of them is fried. The resistors give the following reading
R3 gives 11.8 and 1.9 V
R6 gives 1.9 and 0.01 V
I get the feeeling this is the problem with not getting it to start and function properly.
Does this mean I need to change the resistors cause I'm not that good at soldering.

Thanks,

Hugo