Zarcon Dee Grissom's Idea Page
EV9
Updated 02DEC2008
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Box and Unit.
Under the scope.
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AeroCool EasyWatch, Under the Scope.
How well dose the unit opperate?

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Idea#014 Page 3

The working unit

front
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1024x768
1600x1200
front
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1024x768
1600x1200
Well now that I am just dieing to plug the meter bay thing in, and see what is behind that black glossy display cover. The coolness factor extends to the completely black look of the LCD when the unit is off. Unless you have a billion candle power or a camera flash on it, you can't even see where the digits are, unlike most older car stereos.

viewing angle
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disp
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Surprisingly, It really looks like the picture in the advertisements, my camera skills are still a little bit rusty. hopefully the viewing angle array is some what useful to some. It is very readable above the unit and from the sides, with sufficient contrast, and not to bright. However straight on the numbers start to flicker and fade. Usually its the other way around, unless your looking at the display head-on, it's difficult to read. This is not bad, usually people will be looking at the display from there chair, looking to the side or down at there computer. Bottom line, unless your computer is above your monitor strapped to the ceiling, you will be happy with the display.

I expected the display to get hot for some reason, probably the flashbacks to the micro-light-bulb driven car stereos displays of the past, that always burnt out over time. This unit is cool to the touch, even after 24 hours of operation, to my pleasant surprise. Perhaps I will not be making some kind of dimmer for the (LED I think) light in the display.

5V 19.4 milliamps
5V 19.40 milliamps, 97mW
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12V 4.20 milliamps
12V 4.20 milliamps, 50.4mW
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Seeing as it's power consumption doesn't appear to be documented any where. This particular unit by it's self draws next to nothing for power. Drawing less then 147.4mW (0.1474 Watts peek), I don't expect this unit to ever worm up. Of course this is the unit by itself, not powering any fans, just sensing there RPM's. The 5V fluctuated between 4.20mA and 4.18mA, the 12V between 19.40mA and 19.34mA.

Naturally, I was thinking that the 5V is for the display stuff. I was also thinking that the 12v was only for supplying the fans with power and display light presumably. Wrong, disconnecting the 12v stopped ALL fan readings, the temperatures appeared to continue operation, and the light staid on. That would make sense that the buffer amp or fan-tachometer input circuit would requirer 12v for that I'm guessing 12v signal from the fans. Now I'm heavily leaning to the light in the display being a white LED. It was worth the shot to disable the fan power output circuit that I didn't intend to use.

I noticed every time I tapped the unit, or made noise the center bar graph thing jumped. I had original thought that was some kind of indication of the units attempt at controlling the fans (Fan control output level). I have noticed that it appears to have a self limiting max for loud thumps. I don't know if it also has a noise floor auto adjust as well.

10 9 11
7 6 8
4 3 5
1 0 2
In +db I'm guessing.

Some old boom-boxes use to have level indicators set up in this patron. This would make an awesome HDD activity level display, if strapping the microphone to the hard drive would pick up the heads movement. Then again, a circuit to convert the blinking LED on the NIC into some kind of sound level. As for now, the display only seams to move to the beat of my thumping foot when I'm listening to music. Guess my computers are really that quiet around here.

The triple temperature display seams to be accurate, lacking the much desired decimal point. I like the set and forget display settings, thats why I don't mind the complicated jumper settings in the UPR700. This unit seams to default to Celsius every time 5V power is cut to the unit. I'm guessing that the alarm settings also get forgotten every time power is lost. Now I'm thinking about a mod to have the 5v power (except for the display light) being tapped off the 5Vsb rather then the regular 5V rail. That or the addition of some kind of battery to save the display mode settings.


<PG2 (Box and Unit)< - ^Ideas^ - >PG4 (Conclusion)>

Home > IdeasEasyWatch, Intro.
Box and Unit.
Under the scope.
Conclusion.
Testing Methods & Mods.

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