[TI-H] Re: Speaker

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[TI-H] Re: Speaker

Wow - don't be mad......
I didn't mean to .. well - whatever you thought I was meaning ....

I was replying to Tim, who said he wanted to convert his design to a PIC 
(microcontroller), since most people start thinking about the PIC16F84 
when thinking about PIC's, I thought to give him a tip someone gave me a 
few months ago - about the PIC16F628 being better and cheaper.....

greetz,
--peter-martijn

On Sat, 3 May 2003, Nick Peaden wrote:

> How much money do you think i have? I've got ziltch. I can't even buy a nice
> little cheap microchip...
> ----- Original Message ----- 
> From: "Peter-Martijn" <hbyte@hbyte.net>
> To: <ti-hardware@lists.ticalc.org>
> Sent: Saturday, May 03, 2003 9:54 AM
> Subject: [TI-H] Re: Speaker
> 
> 
> > If you're smart, use a PIC16F628, it has built-in UART, and is cheaper
> than
> > a 16F84 while 100% pin-compatible
> > --peter-martijn
> > ----- Original Message -----
> > From: "Tim Comport" <thetechplace@lycos.co.uk>
> > To: <ti-hardware@lists.ticalc.org>
> > Sent: Thursday, May 01, 2003 3:07 PM
> > Subject: [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
> > > >
> > > > __________________________________
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> > >
> > >
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> >
> >
> 
> 
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