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1. 07:21 AM - Re: HomeBrew Engine Monitor (Robert L. Nuckolls, III)
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| Subject: | Re: HomeBrew Engine Monitor |
At 08:10 PM 12/1/2019, you wrote:
>
>So, A few years ago, a friend gave me an 8 channel EGT/CHT system
>that displayed on a small 2.8" screen that was stuffed in a 5"x5"x2"
>box. A pain in my EZ, but it gave me EGT/CHT. I added a panel meter
>to display MP.
>Come the day of Arduino... I'm addicted, but a bit over my head in
>some of the electronics - doing my best studying data sheets,
>etc..., but would love a second or third set of eyes on what I'm
>doing. Overall plan - full fledged engine monitor.
An ambitious project . . . kudos.
The easiest way to get a sense of your
projects qualities is through the schematics.
ECB art doesn't tell us much at this
stage.
>So far - DAQ in back by the engine - A Teensy 3.6 spewing serial
>data via a MAX3232 to the cockpit.
<snip>
>I designed the air data computer, but it was pretty basic. My
>magnetometer so far has been a fail - can't get it to calibrate. :?
>I want to pull the trigger on this board, but would really
>appreciate any inputs that the collective expertise here may have.
>I'm way beyond myself on this one... I'm also more than willing to
>share my design and code if that's of interest.
Schematics with values first . . .
>Questions:
>Is my ground plane right? Tried to split analog and digital...
Not generally useful on small boards especially
since they eventually come together at Vss
anyhow.
>Am I asking for trouble with any of my signal routing?
>Resistor and cap values logical? Any reason not to use 1% resistors
>on a small project like this?
>The 10uF power supply cap - tantalum? or is there a better option
>for this these days?
chip tantalums are fine. let's see the road-maps-for-
electrons first . . .
Bob . . .
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