making my own computer component?

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

Threaded View
I hope this is the right place to ask this question or if it is not,
that someone can direct me to a better place.

I have some small electronic skills, from the time before computers,
moderate programming skills - and an electronic device which I want to
make into a computer card to plug into my empty card slot and then
write a program to allow me to turn it on and off etc.

Is this a huge deal? Am I unlikely to suceed? The device is a radio
transmitter, and I could purchase a different one and just plug it
into the audio plugs, but then I still have to press buttons on the
unit instead of having the software do some scheduled tasks.


Re: making my own computer component? wrote:
Quoted text here. Click to load it

It really depends on what you want to interface and how good your skills
are. To minimize the strain you might want to consider starting with
something like this

rather than starting from zero. If your target device is at all
compatible then you should have a decent chance of making it work. Worst
case, if the transmitter is a pre-digital device where mechanical
switches are the only provided interface then you may be able to
substitute reed relays in parallel (or series as appropriate) with the
original switches.

John McGaw
[Knoxville, TN, USA]

Re: making my own computer component?

Quoted text here. Click to load it

That looks eactly like what I wanted. Thanks for your response!

But of course, there is no doubt that my skills are -not- up to the
task, but will have to be stretched if I want to do this.

Quoted text here. Click to load it

No, I'm talking about those little FRS radios. My family uses them
extensively, and I thought I might make an MSVB window to just click
on transmit from my computer and have it patch in my headset.

Just a whim really... But one which touches on several other things I
wish my computer did, like Indoor/outdoor thermometer, local broadcast
TV, monitor my oven temperature...etc...

Re: making my own computer component?

Using MSVB makes it a pretty simple task. You could use the 12 bits
available at the parallel port, you could go serial with a simple
uprocessor like a BasicStamp, real easy to do serial, High school
level stuff. I wouldn't even bother pci card.
Ask me for more help if needed, I love VB.
On Mon, 14 Jan 2008 07:25:43 -0800 (PST),

Quoted text here. Click to load it

Re: making my own computer component?

Quoted text here. Click to load it

For simple control applications one of the general purpose interface
modules is probably the easiest way to go.  Something like the
Velleman VM110
provides general purpose inputs and output which by the sounds of
it is all you need for around 25 in kit form here in the UK,
slightly more for an assembled version.  Interfacing to PCI is
notoriously difficult and USB isn't particulary straightforward

Andrew Smallshaw

Site Timeline