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This is the basic interface I used as part of my Computerized Room project. This is the parallel interface only. The 8 bit input card can be found, along with the rest of the project, at Computerize Your Room/House. This interface, as well as the other two interfaces, came from the book "The Robot Builders Bonanza", by Gordan McComb. This interface is also useful for controlling small robots, etc. It is cheap and fairly easy to build, although you should not attempt this project unless you have prior experience with electronics. You probably won't damage anything if you hook it up wrong, but there is always a chance (some parallel ports are better protected then others). If possible, test the project on someone else's, or a school computer :-) |
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| I'm exploring your site; it has great info. I built a small PCB with a ULN2003 chip driving reed relays to control my room lighting (dimmer) using the parallel port on my PC. It's simple and works quite well. I'd now like to add the ability to read the level of the dimmer and send this data to the PC. The dimmer has 4 LED's which I believe are 9VAC and are either on or off. I need to translate this to something that could be read by the parallel port and sent to an app on the PC. Any ideas? | ||
| Verhy informative, Well done! | ||
| is it passable to do this same thing using the usb port instead of the Parallel Port I have been looking all over the internet trying to find a schematic diagram on this if you have any information please let me know thank you Jeremy | ||
| You can download this dll file ( Inpout32.dll ) from http://logix4u.net/ and control your Parallel port even under Windows XP. Note: In Windows 2000 and XP and later versions of windows, you can NOT use the PPort directly . You must use a kernel mode device driver to that.......Actually inpout32.dll does that for you easily. | ||
| is it possible to use this interface to conect 2 computers for use with qbasic so that one way comuncation is possable | ||
| Dear Sir, by using any input, like 5v or getting 0v vich pins i can use to detect whether hardware is connected or not | ||
| I am very happy with your vb parallel port programming.it helped me a lot. i have a doubt? if we want to input data through status port by shorting it and ground how we can detect at the time of running? eg: i runned my program then when i set 88 form colour shoul be red,and if the value is 104 the form colour should be blue without exiting the program.what is the code for that? i tried like this, if vbinp(889)=88 then form1.backcolor=vbred elseif vbinp(889)=104 then form1.backcolor=vbblue end if this is working when it wrote under an event like click or keypress ect..... but i want to check continously without changing any event plz help me........ | ||
| Sir pls give me a kernel driver for WindowsXP, im trying to access parallel port interfacing with Assembly Language Program using A86 assembler.. pls help.. im searching for so long.. (Editor's notes: Search the forum.) |
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| sir, i want to access data coming from ADC by PC parallel port & store it in database(sql) . i want to access the parallel port by java(Net beans) & at windows xp. if u help me at the code portion of interfacing with parallel port i would be greatful to u. plz help & mail me sir.......... thanks | ||
| i AM FOUND PRPLEM FOR INSERT PULSE BY SENSOR TO ADRESS 379 ,I WANT COMMAND FOR BREAK INFINITY LOOP ,FOR READ ONES AND ZEROS FOR THAT PULSES. TANKS Private Sub Command1_Click() Dim ones As Integer, zeros As Integer, delay As Long, COUNT As VARIANT Text2.Text = Inp(Val("&H" + Text1.Text)) DO WHILE COUNT=1 If (Str(Inp(Val("&H" + Text1.Text))) = 119) Then ones = ones + 1 Else zeros = zeros + 1 End If COUNT=1 LOOP Text4.Text = ones Text5.Text = zeros End Sub Private Sub Command2_Click() Out Val("&H" + Text1.Text), Val(Text2.Text) End Sub | ||
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