[TI-H] Re: Speaker

[Next][Index][Thread]

[TI-H] Re: Speaker

>From memory, Cullen began work on connecting a PS/2 keyboard
to the calc long before TI even hinted of releasing an external
keyboard (? I wonder ?). Anyway, I think this is a great idea and
maybe very useful if you used a 'portable' keyboard; such
as a stowaway or rollable keyboard. In fact, after reading of Cullen's
efforts I began work on a version which made use of the 89's silent
link capabilities (so that you wouldn't need any on-calc software);
but since I bought a PPC I haven't really done any more work on this.
I completed an 'expensive' prototype and had the intentions of
converting
my design to use a cheap PIC. You can see my progress on my site at
thetechplace.cjb.net
if you want the source for the BASIC Stamp e-mail me.

Good luck with your efforts,

Tim


-----Original Message-----
From: ti-hardware-bounce@lists.ticalc.org
[mailto:ti-hardware-bounce@lists.ticalc.org] On Behalf Of Nick Peaden
Sent: Tuesday, 29 April 2003 9:31 AM
To: ti-hardware@lists.ticalc.org
Subject: [TI-H] Re: Speaker

OK just wondering. I had soldered one together and remember hearing that
the
speaker was purely inductive and not good for the link port, but I
haven't
had any troubles... BTW... has anyone read up on the TI-PS/2 Keyboard
connection by michael vincent and Cullen Logan.  Tech docs are at
http://www.psikan.com
----- Original Message ----- 
From: "Nivek" <nivek_ent@yahoo.com>
To: <ti-hardware@lists.ticalc.org>
Sent: Monday, April 28, 2003 6:44 PM
Subject: [TI-H] Re: Speaker


> i used to make and sell speakers for TI calcs, what i did was bought a
> 3.4mm? (whatever size the plug is on the link cables) from Radio Shack
> and connected them to a Piezo buzzer, i didn't have any problems.
hope
> this helps 
>
> Kevin
> --- Nick Peaden <Nitrocloud@earthlink.net> wrote:
> > I've heard that using a small broken headphone for a calc speaker
> > (I'm on 89) would cause damage to the link port due to purely
> > inductive loads.  Is this true? Is a piezo buzzer better? Should I
> > make a TI-89 TSR program driver for the PS/2 keyboard connection
that
> > Cullen Logan and Michael Vincent have made? Why haven't I heard much
> > from this list?
>
>
> =====
> Nivek_ent@yahoo.com
> Track where your money goes! See Where It's Been!
http://www.WheresGeorge.com
>
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo 
> http://search.yahoo.com
>


---
Outgoing mail is certified Virus Free 
Checked by AVG anti-virus system (http://www.grisoft.com) 
Version: 6.0.476 / Virus Database: 273 - Release Date: 4/24/2003
Follow-Ups: