Hi everyone.

So here are the pictures of my project

LEDs : (3 Green, 3Yellow, 2 Red)


how it should look...


Leds done


Leds + Resistors Done



Then just wire the LPT pins to LEDS and PLAY

cumpz

Quote from Gegry1992 :

Bingo if you wire D0-D6 to 7seg display i make a software for that
and D7 D8 rpm and limiter led

i was just thinking of that!!! use 7 LEDS to 7seg display, and the last one to Shift Light!
Something like this :


cumpz

HeidiHoe !

Thank you Gegry1992 for an entertaining evening with my solderiron and
your Software.

Works fine on a networked XP SP1 Laptop connected to the GamingPC -Vista SP 1 (no legacy ports anymore - doh)



Housing prepared but too slopy drilling - looking forward for your "Gears of Race" Version .

Request:

Might it be possible to add an function thats let you choose your
lpt address ?

-> I have several LPT Cards (ISA :nod in spare and some motherboards which can be used (finaly) as an instrument controller.
-> So one card could control the rpm-leds and another the possible gear display.

Question:

I am also using VLFS-Dash - is there a possibility to also add an variable port or using the same port for Outgage ?

THX again

Quote from Gegry1992 :

Bingo if you wire D0-D6 to 7seg display i make a software for that
and D7 D8 rpm and limiter led

indeed, but i don't care to much for gear display because once i know a track
i always know in what gear i'm driving.
But thats a personal thing, i can see how other drivers benefit from a gear display.
personally i benefit more from a limiter, Shift & fuel warning.
But if you want to programm it, i will test it , i still have some 7segment display laying around here.

@Pedro: yes my falut Thanks
@MellowHead:

Quote :

Might it be possible to add an function thats let you choose your
lpt address ?

yes possible to choose you the lpt adress but i think only LPT1 and LPT2 0x378 and 0x278

I need for you to test LPT2 Adress and works... (i dont have lpt2)

Quote :

I am also using VLFS-Dash - is there a possibility to also add an variable port or using the same port for Outgage ?

I think no my theater about this: http://www.lfsforum.net/showthread.php?t=54122

@Bingo:
Please wire for 7seg display and tell me how do you wired and i make a software

I think to RPM limit then flashing 7seg display
and one led for fuel?

Quote from NPedro :

i was just thinking of that!!! use 7 LEDS to 7seg display, and the last one to Shift Light!
Something like this :


cumpz

http://www.youtube.com/watch?v=XWy5RhosV34

ok, i will do that when i get home.

so the display will be flashing for shifter and the led will work for Fuel warning then.

yes

I only have commom anode 7segment displays.
Don't know if you connect them directly to the LPT-port?

Quote from bingo87 :

I only have commom anode 7segment displays.
Don't know if you connect them directly to the LPT-port?

you have to use ULN2803 (about 0,4€) like its shown in this pdf

Gegry1992, to make the 7seg display with shift indicator is simple...

each segment is one led, you just have to light up the leds to the number appear

then the last LED will be the Shift Light Indicator

i think it's easy

Quote from Jet_ CZE :

you have to use ULN2803 (about 0,4€) like its shown in this pdf

That's what i suspected.
hmm, then we also need an external PSU? because power sourcing from the LPT-port is going to be to big.

Dont need external psu.. its works with lpt
i use leds without resistors

@Pedro : yes that easy

Quote from NPedro :

Gegry1992, to make the 7seg display with shift indicator is simple...

each segment is one led, you just have to light up the leds to the number appear

then the last LED will be the Shift Light Indicator

i think it's easy

i think you still need that ULN2803 Then, i found out there's a limited to power consumption on the LPT-Port (sourcing= 2.6ma @ 2.4v & sinking=24ma @ 4.2V).

Gegry1992, did you had the chance to test it already?

What type of LED display did you use? common cathode (negative) of common anode (positive)

i found in old pc i tested ago 1-2years...
here is LPT1: 5ma @ 5V
anode i think
i take a picture brb

whops i now see its have resistor at back

red white black gold
then its 90 ohm?

can be, some lpt-ports have a bigger powersource, or something

i'm gonna stay with the led bar design, because that suits my needs.
But if i get those ULN thingy's i will surely test the display.

Quote from bingo87 :

That's what i suspected.
hmm, then we also need an external PSU? because power sourcing from the LPT-port is going to be to big.

I'm using 12V from molex

i dont understand
what uln? O.o

man! if you have 3 lpt ports... you could do a 3 7seg display for speed

(just flashed in my mind )

Quote from Gegry1992 :

i dont understand
what uln? O.o

ULN2803: is infact a open collector driver for use with 7segment LED-displays amoung other applications.


Pins 1...8 are the inputs
Pins 11...18 are the outputs
Pin 9 is connected to the ground
Pin 10 is connected to Powersupply (mostly)

complete datasheet can be found here

Quote from NPedro :

man! if you have 3 lpt ports... you could do a 3 7seg display for speed

(just flashed in my mind )

...
if you have 8 lpt ports then you can make lcd...^^
kidding

@Bingo ok? or what my answer?
or i dont understand what do you do?
or its "big" transistor?

Quote from Gegry1992 :

...
@Bingo ok? or what my answer?
or i dont understand what do you do?
or its "big" transistor?

ya kinda, you can think if it as being a big transistor, it makes sure that you can't draw to much power from your LPT port, thats why you need a external power or a 12v powerconnection from the computer PSU.

But also remember that it will invert the signal, that is the reason why it is used for common Anode LED display.

ohh i understand , thanks

my project has:
3 100Ohm resistor for Green LEDS -> so you get 2.5v on-LED
3 150Ohm resistor for Yellow LEDS -> so you get ~2.1v on-LED
2 180Ohm resistor for Red Leds -> so you get ~1.8v on-LED
even with 1.8v, the red leds lights up preaty good!

i don't think it can damage the lpt port, maybe it could but in a long term... but imagine how the data is tranfered to an lpt printer, i think the refresh rate is way faster than the Gegry1992 project.