I would like some assistance in designing a digital LED display vacuum/boost gauge for a turbo application.
I would like some assistance in designing a digital LED display vacuum/boost gauge with both a linear LED display as well as two seven-segment display modules.
I plan to use a standard automotive MAP sensor to provide the -30Hg to +30psi signal. What I envision is having the two seven-segment displays sit next to a row of 28 green LEDs for vacuum to -28Hg, 7 yellow LEDs for pressure from +1psi to +7psi, and 8 red LEDs for pressure from 8psi to +15psi that light up incrementally as the pressure increases or vacuum increases from a center point of zero (clear LED always on).
The problem is that I have absolutely NO idea of where to start other than the layout of the LEDs. So any help would be appreciated.
This is a drawing of what I'm trying to create, and a picture of what I'm going to replace.