5V -> 1k -> D8

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Rick Finsta
Master MS/Extra'er
Posts: 548
Joined: Fri Dec 10, 2010 4:41 pm

5V -> 1k -> D8

Post by Rick Finsta »

Why in the world would I have had 5V going to the banded side of D8 (D8 is not fitted) through a 1k resistor?

I must have done this a long time ago for something but I'm pulling it if no one can figure out what it may be for!

Thanks as always!
jsmcortina
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Re: 5V -> 1k -> D8

Post by jsmcortina »

V3.0 board?

Sounds like you've turned "FIDLE" into a 0-5V output.

James
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Rick Finsta
Master MS/Extra'er
Posts: 548
Joined: Fri Dec 10, 2010 4:41 pm

Re: 5V -> 1k -> D8

Post by Rick Finsta »

Hmmm... yes I'm using FIdle for Fuel Pump PWM control (signal only, not load) using one of Jean's PWM Frequency Converter boards. I am feeding the board with 12V from S12, and 5V from the 5V pin near the proto board. Did I still need that 5V coming in through D8?
Rick Finsta
Master MS/Extra'er
Posts: 548
Joined: Fri Dec 10, 2010 4:41 pm

Re: 5V -> 1k -> D8

Post by Rick Finsta »

I figured it out - it has something to do with the way the fuel pump works, it isn't a grounding PWM signal so I needed a pull-up. I found the thread on Jean's board where he got me straightened out.

I have to start writing this stuff down.

Thanks for your time, James.
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