Nabble - MicroControllers - PIC

Re: iPod switch

2009-11-10T02:51:16Z

:: I think that page has more info than our internal documentation at
:: Synaptics!

You don't see to many iPods being sold with a knife and fork for
operational purposes.
--
cdb, colin@... on 11/10/2009

Web presence: www.btech-online.co.uk

Hosted by: www.1and1.co.uk/?k_id=7988359

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: iPod switch

2009-11-10T00:12:06Z

>> Ok, I answered my own question....
>>
>> http://electronics.howstuffworks.com/ipod4.htm
>
> ISTR Scott Dattalo mentioned his input on that

I think that page has more info than our internal documentation at Synaptics!

Scott
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T19:32:27Z

You need an ESR meter to test bad caps. Leaking/ bad caps would have high ESR. Check for blue esr meter on the net.

John

--- On Tue, 11/10/09, Gordon Williams <gwilliams@...> wrote:

> From: Gordon Williams <gwilliams@...>
> Subject: Re: [EE] Power Supply Health Question
> To: "Microcontroller discussion list - Public." <piclist@...>
> Date: Tuesday, November 10, 2009, 7:39 AM
>
> > > Could this be a sign that the power supply is
> starting to break down?
> Is
> > > the clicking sound from the transformer?
> > >
> > > Suggestions?
> > >
> >
> > Leaky capacitors. Open the
> power supply and verify.
> >
> > MJ
> >
> >
> There is a cluster of electrolitic caps at one end.
> How would I test for
> leaky capacitors?
>
> Gordon Williams
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T19:17:17Z

Gordon Williams wrote:
> There is a cluster of electrolitic caps at one end. How would I test for
> leaky capacitors?
>

Look for signs of them having split vent caps or physical leaking.

Also, they may have just gone high in ESR. Make sure you replace them
with low ESR type capacitors.
David...

--
___________________________________________
David Duffy Audio Visual Devices P/L
Unit 8, 10 Hook St, Capalaba 4157 Australia
Ph: +61 7 38235717 Fax: +61 7 38234717
Our Web Site: www.audiovisualdevices.com.au
___________________________________________

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T19:09:00Z

> > Could this be a sign that the power supply is starting to break down?
Is

> > the clicking sound from the transformer?
> >
> > Suggestions?
> >
>
> Leaky capacitors. Open the power supply and verify.
>
> MJ
>
>

There is a cluster of electrolitic caps at one end. How would I test for
leaky capacitors?

Gordon Williams

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T19:00:48Z

A lot of switching supplies have a minimum load requirement. When it is
not met, the supply clicks. So, I think all is well under normal
operation.

Harold

--
FCC Rules updated daily at http://www.hallikainen.com . Advertising
opportunities available!
plies

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T18:25:41Z

On Mon, Nov 9, 2009 at 8:48 PM, Gordon Williams <gwilliams@...> wrote:

> Hi,
>
> I've got a 120V switching power supply that produces 12 and 5 Vdc outputs
> that I've been using for the last couple of years to power a digital piano
> after the original quit. It is salvaged out of an old piece of equipment
> somewhere. The 12 V goes to the piano and the 5V goes to an LED to tell me
> the main power supply is on. It stays on all the time and the piano has
> it's own power switch.
>
> I noticed the other day that the LED was pulsing and the supply was making a
> clicking sound at the same time of the pulses, at about 3 Hz. The 12 V
> supply output was fluctuating wildly with no load. When I loaded the supply
> with 200 mA current everything settled down with 11.5 V output and the LED
> stopped pulsing. I don't remember that the supply was doing this pulsating
> under no-load originally when I started using it 2-3 years ago. It's got me
> concerned that something is not working right.
>
> Could this be a sign that the power supply is starting to break down? Is
> the clicking sound from the transformer?
>
> Suggestions?
>
> Gordon Williams
>

Some old switching power supplies needed a minimum load current in
order to regulate. Your supply might have a power resistor that has
burned out from being continuously on and running at 100C for 2-3
years, or you might have bad electrolytic caps, both, or neither.

--
Martin K.

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Power Supply Health Question

2009-11-09T18:21:38Z

Gordon Williams wrote:

> I noticed the other day that the LED was pulsing and the supply was making a
> clicking sound at the same time of the pulses, at about 3 Hz. The 12 V
> supply output was fluctuating wildly with no load. When I loaded the supply
> with 200 mA current everything settled down with 11.5 V output and the LED
> stopped pulsing. I don't remember that the supply was doing this pulsating
> under no-load originally when I started using it 2-3 years ago. It's got me
> concerned that something is not working right.
>
> Could this be a sign that the power supply is starting to break down? Is
> the clicking sound from the transformer?
>
> Suggestions?
>

Leaky capacitors. Open the power supply and verify.

MJ

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Help ID a processor with quadruplex LCD driver on board?

2009-11-09T18:00:08Z

I would like to identify a micro used in a device I need to interface
to. It seems to be 68 pins, chip on board, (so no part numbers)
and has an LCD driver on board, as well as SPI and 32Khz osc.

Is there a site that has pin summaries for various uC/s that would
help narrow the selection? I've been going at this for a long time now.
I thought it might be a popular processor (like PIC or AVR or Freescale,
but nothing I have found comes close to the pin sequence I have.

From the layout and silkscreen it has, near pin 1

SDAT
SCLK
xtal
xtal
Vpp
32kHz
32kHz
Reset

I am certain of the Reset, xtals & Vpp pinning.
SDAT/SCLK could be bit banged I suppose.

The pins for the rest of the device drive a 32 segment x 4 com
mutiplexed LCD directly, without ANY bias resistors (pins 68 to 34 ish)
so I'm looking for micros with LCD drivers on board.
Seems to be quadruplex mode (4 levels for the segments. 0, 1, 2 & 3 V)
Pins from 17 to 34 seem to be I/O since they drive two 6 bit buffers
and a serial memory device.

If anyone recognizes the pin sequence I'd appreciate a pointer
to a possible CPU.

Thanks in advance for you curiosity and help.

Robert

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Power Supply Health Question

2009-11-09T17:48:56Z

Hi,

I've got a 120V switching power supply that produces 12 and 5 Vdc outputs
that I've been using for the last couple of years to power a digital piano
after the original quit. It is salvaged out of an old piece of equipment
somewhere. The 12 V goes to the piano and the 5V goes to an LED to tell me
the main power supply is on. It stays on all the time and the piano has
it's own power switch.

I noticed the other day that the LED was pulsing and the supply was making a
clicking sound at the same time of the pulses, at about 3 Hz. The 12 V
supply output was fluctuating wildly with no load. When I loaded the supply
with 200 mA current everything settled down with 11.5 V output and the LED
stopped pulsing. I don't remember that the supply was doing this pulsating
under no-load originally when I started using it 2-3 years ago. It's got me
concerned that something is not working right.

Could this be a sign that the power supply is starting to break down? Is
the clicking sound from the transformer?

Suggestions?

Gordon Williams

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Help - LED Clock display

2009-11-09T15:57:17Z

OK, thanks again. It's a little hard to power up out of the appliance,
but, think that can happen. Should be able to get to it tomorrow, and
will report back.

Dwayne Reid wrote:

> At 02:57 PM 11/9/2009, Carl Denk wrote:
>
>> Probably I can check the resistance of the transformer windings. I'm
>> pretty sure it's center
>> tapped, then the resistance of both sides should be close. :)
>>
>
> Not necessarily.
>
> The resistance will be similar if the windings were done
> bifilar-style. They can be significantly different if they are done
> as one winding on top of the other - the outer winding uses more wire
> and therefore has a higher resistance.
>
> Your better bet is to measure the voltage from center-tap to each end
> of the winding while under load.
>
> dwayne
>
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: Help - LED Clock display

2009-11-09T15:46:41Z

At 02:57 PM 11/9/2009, Carl Denk wrote:
>Probably I can check the resistance of the transformer windings. I'm
>pretty sure it's center
>tapped, then the resistance of both sides should be close. :)

Not necessarily.

The resistance will be similar if the windings were done
bifilar-style. They can be significantly different if they are done
as one winding on top of the other - the outer winding uses more wire
and therefore has a higher resistance.

Your better bet is to measure the voltage from center-tap to each end
of the winding while under load.

dwayne

--
Dwayne Reid <dwayner@...>
Trinity Electronics Systems Ltd Edmonton, AB, CANADA
(780) 489-3199 voice (780) 487-6397 fax
www.trinity-electronics.com
Custom Electronics Design and Manufacturing

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: Help - LED Clock display

2009-11-09T14:58:32Z

Thanks, good thought, probably have stock of replacement, and easier to
change out, than reinstall and problem still there. Have looked at the
caps, and they aren't bulging or looking goofy. :) I'm only a hobbiest,
and don't have fancy test tools, just a couple of DMM's

Spehro Pefhany wrote:

> At 04:57 PM 09/11/2009, you wrote:
>
>> Thanks for the reply, there is only a few resistors and diodes, I'll
>> just replace all of them. I think the markings are OK to determine
>> values. Probably the transformer voltages can be measured and educated
>> guess what to replace it with if need be. Probably I can check the
>> resistance of the transformer windings. I'm pretty sure it's center
>> tapped, then the resistance of both sides should be close. :)
>>
>
> You might want to also look at the power supply to see if the electrolytic cap
> has died, which could result in the current to the display varying.
>
> Try paralleling it with a known good one of similar value and same or
> higher voltage rating if you don't have an ESR meter handy.
>
> Best regards,
>
> Spehro Pefhany --"it's the network..." "The Journey is the reward"
> speff@... Info for manufacturers: http://www.trexon.com
> Embedded software/hardware/analog Info for designers: http://www.speff.com
>
>
>
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: Help - LED Clock display

2009-11-09T14:46:43Z

At 04:57 PM 09/11/2009, you wrote:
>Thanks for the reply, there is only a few resistors and diodes, I'll
>just replace all of them. I think the markings are OK to determine
>values. Probably the transformer voltages can be measured and educated
>guess what to replace it with if need be. Probably I can check the
>resistance of the transformer windings. I'm pretty sure it's center
>tapped, then the resistance of both sides should be close. :)

You might want to also look at the power supply to see if the electrolytic cap
has died, which could result in the current to the display varying.

Try paralleling it with a known good one of similar value and same or
higher voltage rating if you don't have an ESR meter handy.

Best regards,

Spehro Pefhany --"it's the network..." "The Journey is the reward"
speff@... Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: Help - LED Clock display

2009-11-09T13:57:58Z

Thanks for the reply, there is only a few resistors and diodes, I'll
just replace all of them. I think the markings are OK to determine
values. Probably the transformer voltages can be measured and educated
guess what to replace it with if need be. Probably I can check the
resistance of the transformer windings. I'm pretty sure it's center
tapped, then the resistance of both sides should be close. :)

Bob Blick wrote:

> On Mon, 09 Nov 2009 12:17:17 -0500, "Carl Denk" <cdenk@...>
> said:
>
>> Wife's kitchen oven has a .5" high 4 character plus colon, 7 segment
>> clock/timer display. The timer only beeps when time expires, there is no
>> control of the oven. Several of the LED segments are dim, and it they
>> are not consistent in brightness with time.
>>
>
> The clock chips I am familiar with use the internal resistance of the
> segment drivers as the current limit. And they have only two commons,
> steered by the 60 cycle AC. There are usually failsafe resistors on
> those two commons as well as the steering diodes. Based upon your
> symptoms(different segments dim at various times) those diodes and
> resistors are the components I would focus on. A slim possibility is one
> leg of the center-tapped transformer has gotten funky.
>
> Cheers,
>
> Bob
>
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: iPod switch

2009-11-09T12:29:23Z

> Ok, I answered my own question....
>
> http://electronics.howstuffworks.com/ipod4.htm

ISTR Scott Dattalo mentioned his input on that

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

RE: [AD] touch screen graphic LCD in USA?

2009-11-09T12:21:46Z

<5eeda4c20911091032m124fcbe4v8e16f4f265bec287@...>
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0

When I bought the first display from them=2C I wrote them an email and aske=
d for a datasheet on it. They emailed one back. You might see if they hav=
e one for the display you are interested in. I've really been satisfied wi=
th their products overall. Circuit-ed.com is the US distributor for ME. W=
hile it costs a few bucks more to order from them=2C it usually gets here q=
uicker.
Good luck=2C
FJ

> Hi Fred=2C
>
> I've seen the mikroelectronica offer=2C $25 128x64 + touch screen=2C the
> problem is I'm planning a series product and mikroelectronica does not
> give any technical specifications (or I wasn't able to find it) like
> viewing angle (6 or 12 o'clock) or brightness.
> thx for the rest of the links=2C
>
> Vasile =20
_________________________________________________________________
Hotmail: Trusted email with Microsoft's powerful SPAM protection.
http://clk.atdmt.com/GBL/go/177141664/direct/01/
http://clk.atdmt.com/GBL/go/177141664/direct/01/
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Micro 7-Segment LCD Glass?

2009-11-09T10:52:01Z

On Mon, Nov 9, 2009 at 11:57 AM, M. Adam Davis <stienman@...> wrote:

> On Sun, Nov 8, 2009 at 1:58 PM, WH Tan <whsiung.my@...> wrote:
>> By the way, I think I saw a I2C tiny 7-segment a while back, but I
>> can't get its link from Google search this time ...
>
> Took me a bit, but I found it among my LCD links:
>
> http://www.hexpertsystems.com/LCD/
>
> There's no "buy now" button, but they still sell modules with this
> part in it, so you might try contacting them.
>

That's a nice little LCD. I would like it better if it was
alphanumeric at least.

--
--
Martin K.
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Amplifying a PWM signal

2009-11-09T10:44:18Z

Maybe you will like this amplifier better than an ordinary push-pull
(like I did):
http://www.edn.com/contents/images/6702271.pdf
page 45-46

Vasile

On 11/8/09, Dumitru Stama <spanac@...> wrote:

> Hi,
> I have enough voltage in my PWM signal (~4.5V) but not enough current
> to drive that small speaker. I can hear the sound but is weak. I will
> try with that push-pull suggested in the previous posts to see if the
> results are better.
> Thank you for your reply
>
> Dumitru
>
>
> On Sun, Nov 8, 2009 at 7:28 PM, Vasile Surducan <piclist9@...> wrote:
> > Hi Dumitru,
> > The schematic posted is an emiter repeater. It does not amplify the
> > voltage, only the current flow through your low impedance speaker. If
> > the PWM is properly filtered, you have the chance of hearing almost
> > nothing, but this is logic.
> >
> > Vasile
> >
> > On 11/4/09, Dumitru Stama <spanac@...> wrote:
> >> Hi guys,
> >> i have a question. My PIC18F2520 is set up to output a PWM signal. I
> >> want to amplify the signal's current and feed it into a speaker.
> >> Right now using only a single PN2222A i can hear the sound but the
> >> volume is quite low.
> >> I tried a LM386 and the output is what i really want but only if i
> >> select the 200x gain schematics.
> >> I don't know what should i try now, i really want to use only simple
> >> components and not a dedicated amplifyer like LM386.
> >>
> >> Thank you very much in advance
> >> Dumitru Stama
> >>
> >> --
> >> http://www.piclist.com PIC/SX FAQ & list archive
> >> View/change your membership options at
> >> http://mailman.mit.edu/mailman/listinfo/piclist
> >>
> >>
> >>
> > --
> > http://www.piclist.com PIC/SX FAQ & list archive
> > View/change your membership options at
> > http://mailman.mit.edu/mailman/listinfo/piclist
> >
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: touch screen graphic LCD in USA?

2009-11-09T10:36:46Z

On 11/8/09, Wouter van Ooijen <wouter@...> wrote:
> Vasile Surducan wrote:
> > It seems nobody is using graphic LCD on this lis...:(
>
> not yet with touchscreen

Hi Wouter,
If you have already written the font set and the addressing (Jal)
library, the touchscreen is easy...

Vasile
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: [AD] touch screen graphic LCD in USA?

2009-11-09T10:32:02Z

Hi Fred,

I've seen the mikroelectronica offer, $25 128x64 + touch screen, the
problem is I'm planning a series product and mikroelectronica does not
give any technical specifications (or I wasn't able to find it) like
viewing angle (6 or 12 o'clock) or brightness.
thx for the rest of the links,

Vasile

On 11/8/09, fred jones <boattow@...> wrote:

>
> Not really sure what you want to know...
>
> I use Mikroelektronika compilers which have the code examples needed to use these displays. The main reason I've mostly abandoned assembly.
>
> http://www.crystalfontz.com/product/CFAG240128L-TMI-TZTS
>
> http://www.circuit-ed.com/128x64-BLWH-TOUCHSCREEN-GLCD--P146C8.aspx
>
> This one has been "Available soon" for over a year now
> http://www.mikroe.com/en/tools/glcd/serial/touch/
>
> Touch screens and complete components
> http://www.mikroe.com/en/tools/components/
>
>
> > Hi all,
> >
> > I need some medium size (100mmx50mm or 3 to 5 inch) 128x64 (or larger)
> > BW graphic LCD with touch screen, available in small quantities in
> > next two-three years.
> > Serial or parallel access, if already have driver with graphic fonts
> > it's better.
> > Have some of you experience with this stuff?
> >
> > thanks,
> > Vasile
> _________________________________________________________________
> Windows 7: Unclutter your desktop.
> http://go.microsoft.com/?linkid=9690331&ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen:112009
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Help - LED Clock display

2009-11-09T09:51:44Z

On Mon, 09 Nov 2009 12:17:17 -0500, "Carl Denk" <cdenk@...>
said:
> Wife's kitchen oven has a .5" high 4 character plus colon, 7 segment
> clock/timer display. The timer only beeps when time expires, there is no
> control of the oven. Several of the LED segments are dim, and it they
> are not consistent in brightness with time.

The clock chips I am familiar with use the internal resistance of the
segment drivers as the current limit. And they have only two commons,
steered by the 60 cycle AC. There are usually failsafe resistors on
those two commons as well as the steering diodes. Based upon your
symptoms(different segments dim at various times) those diodes and
resistors are the components I would focus on. A slim possibility is one
leg of the center-tapped transformer has gotten funky.

Cheers,

Bob

--
http://www.fastmail.fm - mmm... Fastmail...

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: Help - LED Clock display

2009-11-09T09:17:17Z

Wife's kitchen oven has a .5" high 4 character plus colon, 7 segment
clock/timer display. The timer only beeps when time expires, there is no
control of the oven. Several of the LED segments are dim, and it they
are not consistent in brightness with time. My thinking is the resistor
in series with the common anode/cathode may have changed in value, and
swapping it for a same or different value may solve the problem. Or I
might end up changing the display. Last resort would be just buy a new
controller/display board for $130. I have not been able to find either
schematics or source the parts. Any help in that area appreciated. The
info follows:

Display:
BACKSIDE: P/N SL-2042-27TBH, 9Z22
FRONT SIDE: P/N TCL-1008P

CONTROLLER BOARD:
FRONT SIDE: 20-21672 PC1
WORLDTRONICS WT-2167L

CONTROL CHIP
WT 2223
9928CEG

There is a 0.1" spacing set of short jumper wires between the display
and controller board. 21 wires, then a space of approx. 0.6", and 5 more
wires, all in one line.

If I could identify which wire was the common, that would be good. Are
these displays a common pinout setup, if so could someone point me
toward info.

Thanking in advance.
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: iPod switch

2009-11-09T08:45:17Z

On Mon, 09 Nov 2009 09:15:44 -0600, "Mark E. Skeels"
<mskeels@...> said:
> How does that rotary controller switch on the iPod work?

It doesn't, if you are wearing gloves :)

--
http://www.fastmail.fm - Accessible with your email software
or over the web

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Micro 7-Segment LCD Glass?

2009-11-09T07:57:51Z

On Sun, Nov 8, 2009 at 1:58 PM, WH Tan <whsiung.my@...> wrote:
> By the way, I think I saw a I2C tiny 7-segment a while back, but I
> can't get its link from Google search this time ...

Took me a bit, but I found it among my LCD links:

http://www.hexpertsystems.com/LCD/

There's no "buy now" button, but they still sell modules with this
part in it, so you might try contacting them.

-Adam
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: iPod switch

2009-11-09T07:46:53Z

Ok, I answered my own question....

http://electronics.howstuffworks.com/ipod4.htm

Mark Skeels
Engineer
Competition Electronics, Inc.
TEL: 815-874-8001
FAX: 815-874-8181
www.competitionelectronics.com

Mark E. Skeels wrote:
> How does that rotary controller switch on the iPod work?
>
> Thanks!
>
>
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

iPod switch

2009-11-09T07:15:44Z

How does that rotary controller switch on the iPod work?

Thanks!

--
Mark Skeels
Engineer
Competition Electronics, Inc.
TEL: 815-874-8001
FAX: 815-874-8181
www.competitionelectronics.com
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Digikey New Zealand

2009-11-08T22:18:09Z

Much to my amazement, I've just discovered that RS have the Pic in
stock (well in England actually) and they are actually CHEAPER than
buying it direct from Microchip after freight is included.

Taking an aspirin and having a lie down now, the shock is too much.
:)

Colin
--
cdb, colin@... on 11/9/2009

Web presence: www.btech-online.co.uk

Hosted by: www.1and1.co.uk/?k_id=7988359

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: WAV to PIC stored speech?

2009-11-08T15:12:03Z

> We have a project where we have a bunch of WAV files that we'd like to
> convert to some compact format and then output through a PIC DCI port

I'm trying to do something similar, as a starting point you might want to
check out the TraxMod project at
http://www.k9spud.com/traxmod/
he's got some interesting possibilities there, but I haven't had time to
break it down to modify for my purposes. I've gotten small mod files
playing properly, but so far haven't figured out how to trigger each
sample directly.
The version 0.1 can convert and save samples (via mod file) directly to
the dspic, all versions after that moved towards the files being stored on
sd card.

Lee
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]

Re: EE: Inductors

2009-11-08T15:11:51Z

Yes, Vasile. Thank you for asking.

----- Original Message -----
From: "Vasile Surducan" <piclist9@...>
To: "Microcontroller discussion list - Public." <piclist@...>
Sent: Saturday, November 07, 2009 1:23 PM
Subject: Re: EE: Inductors

> Hi Rich,
>
> Toko definitely has such inductors, I guess you need a variable one
> for 455KHz ?
>
> Vasile
>
> On 11/6/09, Rich <rgrazia1@...> wrote:
>> I was thinking mostly about lower cost and readily available in
>> quantities
>> of 1000. Other parameters could be consistent with standard broadcast
>> radio. I looked at Toko but it seemed that they had only if coils.
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Richard Prosser" <rhprosser@...>
>> To: "Microcontroller discussion list - Public." <piclist@...>
>> Sent: Friday, November 06, 2009 4:30 AM
>> Subject: Re: EE: Inductors
>>
>>
>> Wind your own ??
>>
>> And define "better"
>> Is "bettter" higher Q, lower cost, smaller size, more consistent.....?
>>
>> RP
>>
>> 2009/11/6 Rich <rgrazia1@...>:
>> > I have scoured the net looking for RF Oscillator inductors for am radio
>> > Standard AM Band. But no luck. I have looked for prewound tapped coils
>> > for
>> > Hartley oscillator configuration. If I can buy off-the-shelf it will be
>> > better than custom wound. Any one know if custom wound is the only
>> > option.
>> > The only circuit restraint is that the osc must be Hartley
>> > configuration.
>> > --
>> > http://www.piclist.com PIC/SX FAQ & list archive
>> > View/change your membership options at
>> > http://mailman.mit.edu/mailman/listinfo/piclist
>> >
>>
>> --
>> http://www.piclist.com PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>
>> --
>> http://www.piclist.com PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

Re: port issues with a 16f684

2009-11-08T11:35:07Z

Um, can you be more specific?What isn't working?

I bought that book and the Pickit1 about 2 years ago and it's been a great kickstart into PIC programming. I've since bought a Pickit2 and tried some other PICs but I still use the book and the Pickit1 for some quick tests, and the '684 is maybe my favourite PIC - small size, but loaded.

From forum: PIC - [PIC]

Re: touch screen graphic LCD in USA?

2009-11-08T11:01:26Z

Vasile Surducan wrote:
> It seems nobody is using graphic LCD on this lis...:(

not yet with touchscreen

--

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Micro 7-Segment LCD Glass?

2009-11-08T10:58:04Z

2009/11/9 Brooke Clarke :

> Is there such a thing as a small 7-segment LCD that's in a package like an
> 8-pin DIP or something similar with one or two digits? It might be a raw
> glass,i.e. the segments would be driven from a PIC.

http://www.allspectrum.com/store/product_info.php?products_id=53

By the way, I think I saw a I2C tiny 7-segment a while back, but I
can't get its link from Google search this time ...

Best regards,

--
WH Tan

--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

RE: [AD] touch screen graphic LCD in USA?

2009-11-08T10:44:07Z

Not really sure what you want to know...

I use Mikroelektronika compilers which have the code examples needed to use these displays. The main reason I've mostly abandoned assembly.

http://www.crystalfontz.com/product/CFAG240128L-TMI-TZTS

http://www.circuit-ed.com/128x64-BLWH-TOUCHSCREEN-GLCD--P146C8.aspx

This one has been "Available soon" for over a year now
http://www.mikroe.com/en/tools/glcd/serial/touch/

Touch screens and complete components
http://www.mikroe.com/en/tools/components/

> Hi all,
>
> I need some medium size (100mmx50mm or 3 to 5 inch) 128x64 (or larger)
> BW graphic LCD with touch screen, available in small quantities in
> next two-three years.
> Serial or parallel access, if already have driver with graphic fonts
> it's better.
> Have some of you experience with this stuff?
>
> thanks,
> Vasile

_________________________________________________________________
Windows 7: Unclutter your desktop.
http://go.microsoft.com/?linkid=9690331&ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen:112009
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [EE]

Re: Digikey New Zealand

2009-11-08T10:27:12Z

Hi all,

On Mon, Nov 9, 2009 at 3:38 AM, Apptech <apptechnz@...> wrote:
> I was/am of the impression that the "NZ" office is a virtual one and that
> orders are fulfilled directly from Thief River.(Great name for a place to
> run a business one.) This is also true of their Chinese website, which
> starts off with Chinse URLs but AFAIR reverts to US obes as one proceeds
> through the system.

A couple of years ago I did a little research on Thief River Falls,
Minnesota. The place is quite dependent on two large employers:
Digikey and Arctic Cat. About 1/3rd of the people work for Digikey,
1/3rd for Arctic Cat, and the other 1/3rd work for small
service-oriented businesses which serve the other 2/3rds :)

See:
http://en.wikipedia.org/wiki/Thief_River_Falls,_Minnesota (tells you
that the population is 8400 people)
http://en.wikipedia.org/wiki/Digi-Key (1900 employees)
http://en.wikipedia.org/wiki/Arctic_Cat (1630 employees)
Typically, the workforce is about 75% of the population. That's 6300
people in TRF's case. 30% of those work for DK. 26% for Arctic Cat.
44% for other businesses.

Sean
--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

From forum: PIC - [PIC]