okay the direction on the LEDs are correct...they light up how htey should
if i where to put this together would this work...please look at the alt to the fuel gauge part
I was referring to this schematic. My apologies if that wasn't the one being referenced.
Yes, 3.8K is OK.Originally Posted by browningbuck
oh you totally screwedm me up now... so would this still need that amp circuit that SPDCHK had designed....i will have to give this a try tonight
i have a 1.2K and a 3.8K resistor will that be okay?? i dont want to run to the store today but i might have to
No you Don't need that Op-Amp.
I never Built this to test it, But it should work.
Give it a try.
Gary
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Okay Chemelec i LOVE it now that ive looked at it, just one question. is it okay to shoot that 12V down to the potentiometer that is surrounded by GAS?????
If it is a PROPER SENDER potentiometer, made to be in the gasoline, it should be OK.
But other than that, I can't say without knowing the real quality of that part.
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okay sweet , yeah it comes straight from Honda and is made for it to be in gas (just didnt know if orginally a lower voltage was sent to it)
tomorrow morning i will have results!!!!!!!
DYUMN chemelec it worked...it has some small bugs to work out (like once i hit the very to of full it doesnt show a light..but just a slight bit off full it comes on) then i need to get some diodes in there so it acts like a fuel gauge(only one light is on at any give point) then the final thing i need to work out(inbetween positions from one light to the next there may be no light showing at all until i get to the next one(i think the diodes will fix that))
How do you have pin 9 connected? If you want "dot" mode then leave it open, otherwise connect it to pin 3 and it will be in "bar" mode.
AHHHHHHH sweet that will solve that proble and i wont have to use diodes
that make me REAL happy
hey how do i open up the range a little (so that it would range from 11 ohms to 132ohms???) would that be off the 150ohm resistor that i would make bigger????
Instead of only using the 5 LED's as you mentioned, Why not use ALL 10 LED's?
It will Work Better and definately show Full.
Edit: And As I said previously:
That 150 Ohm resistor was Only an Aproximate Value. It may need to be slightly Lower or Higher to get an Exact range for what you want.
(I only used the 150 Ohms, as it is a Standard, off the shelf value.)
Gary
Last edited by chemelec; 8th December 2007 at 04:43 PM.
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here is why i cant use 10...i could use sx like i said earlier..not enough room
this is a small little buisness i have putting intergrated gear indicators on bikes (the 7 seg. display in the middle) then bunches of people wanted me to design a fuel gauges and thats where i am at (the fuel leds are just photoshoped as you can tell) BOY I LOVE LEDs
Well there are Small LED's and there are SMALLER LED's.
I have some here that are only 1/16 Inch Square.
Side by Side, 10 would be 5/8 Inch Long.
But Anyway, Have FUN.
GARY
here is why i cant use 10...i could use sx like i said earlier..not enough room
this is a small little buisness i have putting intergrated gear indicators on bikes (the 7 seg. display in the middle) then bunches of people wanted me to design a fuel gauges and thats where i am at (the fuel leds are just photoshoped as you can tell
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Very cool looking design.
As said already there are a zillion different LED designs. You might want to consider looking around before freezing your project.
Here are just a few ideas:
http://cgi.ebay.com/HDSP-4830-LED-BA...QQcmdZViewItem
http://cgi.ebay.com/Submini-RED-LED-...QQcmdZViewItem
http://cgi.ebay.com/Red-Symbol-LED-5...QQcmdZViewItem
Lefty
Measurement changes behavior
only reason i can down grade in size is due to mcd they will in the end have a photo resistor, and have to be bright enough in the day to be clairly visable, on a motorcycle, and plus 5 is cheaper and more simple for me to sell
i still have a prob with getting this in bar mode instead of doti have tried as said before connecting pin 3 and 9 (no luck) any sugestions????? and the project has not been put on pause it was just the weekend
i kinda liked this one a little
Last edited by browningbuck; 10th December 2007 at 07:31 PM.
To get it in bar mode simply provide power to the Mode Node...if that doesn't work then something is messed and you should try another chip of the same type.
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