[chbot] USB - RS232 modules.

[william]

old PS/2 or (particularly) USB keyboards are handy for porting old console 
controls to emulators as well, i've adapted a few PS1 (digital) controls and 
an N64 control using an analogue PS2 controller joystick to replace the 
N64's stick using a quad comparator to decode each direction on the stick 
with a trimpot for threshold, i've used optocouplers to convert the 
individual button lines to the column row used by a keyboard but i think 
transistors probably would have done the trick
if you want real parallel / serial ports, get an old motherboard or laptop, 
setup 98 or something on it and have a screw around in VB, there's a few 
dll's floating around that can talk to the parallel and serial ports, and i 
think VB's comms control can work with most of the serial port lines. i've 
made a few programs for some projects that never fell through for various 
reasons but could twiddle the parallel port data lines and a program to 
control the 8 digit LED displays from a serial port on a laptop etc

-----Original Message----- 
From: Chris Hellyar
Sent: Sunday, May 13, 2012 11:39 AM
To: Christchurch Robotics
Subject: Re: [chbot] USB - RS232 modules.

Hurro,

Yeah, I did think about some options like that but the PC software bit
of it is fixed so RTS/DTR is what I've got to work with.

I've done the old keyboard guts a few times for inputs.  :-)

Would be sooo much easier if modern PC's had parallel and serial ports
like the good old days of course.

Cheers, Me.

On 13/05/12 11:33, Mark Beckett wrote:
> Cheapest inout to USB I know is an old mouse. Wire across one of the 
> buttons.
> Not sure about outward though, perhaps the cap lock led from a keyboard 
> and an opto.
>
>
> Mark
>
> Synco Reynders wrote:
>> I use CP2102, locally available, native linux support etc.
>> /s
>>
>> On 13 May 2012 10:26, Chris Hellyar <chris at trash.co.nz> wrote:
>>> Hi-ho folks...
>>>
>>> Anyone got a pick for a logic level USB-RS232 module with a mini-USB
>>> connector built in for an embedded project?
>>>
>>> Heaps show up on Mr Google so wondering what has already been used to 
>>> save
>>> me some pain. :-)
>>>
>>> For the curious; it's to use as the PTT interface for an echolink 
>>> interface,
>>> just using RTS and the 5V for some LED's. ref: http://www.echolink.org 
>>> I'm
>>> currently using a USB-serial dongle and I want to tidy up the cable mess 
>>> to
>>> make it a permanent install rather than a birds-nest.
>>>
>>> Cheers, Chris H.
>>>
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