Searching \ for '[OT]: It works!' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=works
Search entire site for: 'It works!'.

Exact match. Not showing close matches.
PICList Thread
'[OT]: It works!'
2002\08\15@062716 by Kieren Johnstone

picon face
Got Wouter's marvellous Wisp628 programmer kit, put it all together, it didn't work!
Then, out of the blue, it did.  I have no idea why.  Either way it DOES!  The LED flashing bought tears to my eyes :D

-Kieren

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@123137 by Brendan Moran

flavicon
face
Glad to hear it (:

--Brendan
----- Original Message -----
From: "Kieren Johnstone" <spam_OUTmisterfugitTakeThisOuTspamHOTMAIL.COM>
To: <.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU>
Sent: Thursday, August 15, 2002 3:26 AM
Subject: [PICLIST] [OT]: It works!


Got Wouter's marvellous Wisp628 programmer kit, put it all together, it
didn't work!
Then, out of the blue, it did.  I have no idea why.  Either way it DOES!
The LED flashing bought tears to my eyes :D

-Kieren

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@145433 by Wouter van Ooijen

face picon face
> Got Wouter's marvellous Wisp628 programmer kit, put it all
> together, it didn't work!

Kieren forgot to mention the two days of emailing between the putting
together and the working.... Some day I'll add a trouble-shooting
section to thew web page.

> The LED flashing bought tears to my eyes :D

Then I suggest a good medical insurance before your start a more
advanced project...

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@150844 by Quentin

flavicon
face
>Then I suggest a good medical insurance before your start a more
>advanced project...

ROFL!
Make sure you have cover for a shrink, baldness, square eyes and medicine to
keep your brain from exploding with all the new ideas!

Welcome to PICcing!

Quentin
qscspamKILLspamiptech.co.za
http://www.iptech.co.za

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@153630 by Peter L. Peres

picon face
On Thu, 15 Aug 2002, Kieren Johnstone wrote:

>Got Wouter's marvellous Wisp628 programmer kit, put it all together, it
>didn't work! Then, out of the blue, it did.  I have no idea why.  Either
>way it DOES!  The LED flashing bought tears to my eyes :D

There is no magic in electronics. Just bad contacts.

Peter

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@165703 by Brendan Moran

flavicon
face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

> There is no magic in electronics. Just bad contacts.

Sure there is.  All electronics run on magic smoke.  If you let the
smoke out, the electronics cease to function.

- --Brendan

-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>

iQA/AwUBPVwViAVk8xtQuK+BEQLAHgCfVmUc5oZbwfWVQn9LgrC53ClmDIQAoN3j
5I2nLwINHjHXxNPzd4cdhgy2
=aYy8
-----END PGP SIGNATURE-----

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@170319 by Kieren Johnstone

picon face
Already burnt my first PIC (am I official now?).. hooked up +13V to pin 2
rather than 1 by mistake..won't be doing THAT again.
Anyway, I have a 2-digit 7-segment LED thing lying around, but it's common
cathode (assuming cathode is +ve!).. anyway, I can't figure out how I can
use it with a PIC - you can't set a pin to groun can you? :(

-Kieren

{Original Message removed}

2002\08\15@170530 by Eoin Ross

flavicon
face
The smoke comes from PICsees smoking DAC, after electronic equipment
has been in service a few years the ash build up on the circuits in what we call
"dust"
After letting all the smoke out the PICsees get the munchies and start eating the packaging of the circuit.

And you thought is was electrons!

>>> .....bmoranKILLspamspam.....MILLENNIUM.CA 08/15/02 04:56PM >>>

> There is no magic in electronics. Just bad contacts.

Sure there is.  All electronics run on magic smoke.  If you let the
smoke out, the electronics cease to function.

- --Brendan

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\15@212349 by M. Adam Davis

flavicon
face
Yes, you can set a pin to ground.  You can set a pin to high.  You can
even set it to 'high impedance' which is similar to being disconnected
and is what the pin looks like when it's being used as an input.

Not only that, but it can handle more current grounding something than
it can by bringing something high.

There are several PIC tutorials on the internet which go through the
simple steps of how to deal with these beasts...

http://www.google.com/search?q=pic%20tutorial
is a good search to start with - these next few seem to offer some good
starting material:
http://www.mstracey.btinternet.co.uk/pictutorial/picmain.htm

Here's a brief overview of the 16f87x chips (most other tutorials still
only cover the 16f84 - largely the same basic material, but a few gotchas)
http://www.epemag.wimborne.co.uk/pictutorial.pdf

A simple starter page written by Myke Predko can be found on rentron here:
http://www.rentron.com/Myke3.htm

There are dozens others.  I hope this helps!

-Adam



Kieren Johnstone wrote:

>Already burnt my first PIC (am I official now?).. hooked up +13V to pin 2
>rather than 1 by mistake..won't be doing THAT again.
>Anyway, I have a 2-digit 7-segment LED thing lying around, but it's common
>cathode (assuming cathode is +ve!).. anyway, I can't figure out how I can
>use it with a PIC - you can't set a pin to groun can you? :(
>
>-Kieren
>
>{Original Message removed}

2002\08\15@213826 by Spehro Pefhany

picon face
At 10:00 PM 8/15/02 +0100, you wrote:
>Already burnt my first PIC (am I official now?).. hooked up +13V to pin 2
>rather than 1 by mistake..won't be doing THAT again.
>Anyway, I have a 2-digit 7-segment LED thing lying around, but it's common
>cathode (assuming cathode is +ve!).. anyway, I can't figure out how I can
>use it with a PIC - you can't set a pin to groun can you? :(

Sounds like "common anode".

Yes, it's easy to use with a PIC. You can drive it easily with 10 port pins
and a couple of BJTs, and somewhat less easily with fewer port pins. I don't
recommend trying to drive it without the BJTs, not enough current, but
I've seen it done (with poor results).

Like this will work (assuming it is CA) - that's Common Anode, not California,
Canada or Chromel-Alumel  ;-)


                   +5
                |/ E
D0----[470R]----|       PNP eg. 2N4403, 2SA1015 etc.
                |\
                  -----> Digit 0

(duplicate for Digit 1) 2 total

S0-----[150R]------> segment A

(duplicate for B..G, and decimal point) 8 total (you can use network(s))

Here's a data sheets for 3/4 digit displays we have:

http://www.trexon.com/leds/trexon_led_display.pdf

This kind needs less current, but same idea.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
EraseMEspeffspam_OUTspamTakeThisOuTinterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\08\16@103212 by Mike Mansheim

flavicon
face
> Not only that, but it can handle more current grounding something than
> it can by bringing something high.

I've heard this many times since I've started working with pics, and
have just accepted it.  However, if I look at the data sheets for the
16F87x and the 18Fxxx, they both say:

Maximum output current sunk by any I/O pin:                       25 mA
Maximum output current sourced by any I/O pin:                    25 mA
Maximum current sunk by PORTA, PORTB, and PORTE (combined):      200 mA
Maximum current sourced by PORTA, PORTB, and PORTE (combined):   200 mA
Maximum current sunk by PORTC and PORTD (combined):              200 mA
Maximum current sourced by PORTC and PORTD (combined):           200 mA

Since sourced and sunk currents are the same, where does a beginner that
is only reading the data sheets learn that grounding is better?  Or is
it reflected in a different characteristic?

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2002\08\16@103806 by Spehro Pefhany

picon face
At 09:26 AM 8/16/02 -0500, you wrote:

>Since sourced and sunk currents are the same, where does a beginner that
>is only reading the data sheets learn that grounding is better?  Or is
>it reflected in a different characteristic?

Look at the typical and maximum voltage drops for sinking and sourcing
a given current level. The internal N-channel MOSFET is "better". If
you've studied solid-state physics, you'll know why too, but it's not
particularly important.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speffspamspam_OUTinterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2002\08\16@105728 by Alan B. Pearce

face picon face
>Maximum output current sunk by any I/O pin:                       25 mA
>Maximum output current sourced by any I/O pin:                    25 mA
>Maximum current sunk by PORTA, PORTB, and PORTE (combined):      200 mA
>Maximum current sourced by PORTA, PORTB, and PORTE (combined):   200 mA
>Maximum current sunk by PORTC and PORTD (combined):              200 mA
>Maximum current sourced by PORTC and PORTD (combined):           200 mA
>
>Since sourced and sunk currents are the same, where does a beginner that
>is only reading the data sheets learn that grounding is better?  Or is
>it reflected in a different characteristic?

Check the voltage drop across the internal transistor under these
conditions. For example I am looking at page 184 of the 16F87x data sheet
DS30292c and to source 25ma at 5V supply, the output voltage has dropped to
2.5V On page 185 for the output to sink 25mA at 5V supply, the output
voltage will rise to 0.8V. So in one case the internal transistor will have
2.5V across it, in the other 0.8V

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2002\08\16@105932 by M. Adam Davis

flavicon
face
It's because all the 'older' chips only sourced 20mA each pin and sunk
25mA, and so that's what I'm used to.

I'm glad to see that the 18f series is beefing up the sourcing current,
though.

-Adam

Mike Mansheim wrote:

{Quote hidden}

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


2002\08\17@164725 by Peter L. Peres

picon face
>> There is no magic in electronics. Just bad contacts.
>
>Sure there is.  All electronics run on magic smoke.  If you let the
>smoke out, the electronics cease to function.

You must be speaking from experience. I am always for preventive measures
so I keep a dead fish in my drawer all the time. It works, I haven't let
any smoke out of something in a while now.

Peter

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2002\08\18@020904 by Brendan Moran

flavicon
face
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

At 03:59 PM 17/08/2002 +0300, you wrote:
> >> There is no magic in electronics. Just bad contacts.
> >
> >Sure there is.  All electronics run on magic smoke.  If you let the
> >smoke out, the electronics cease to function.
>
>You must be speaking from experience. I am always for preventive measures
>so I keep a dead fish in my drawer all the time. It works, I haven't let
>any smoke out of something in a while now.

Unfortunately, my dead fish got a rather nasty case of bronchitis, and it
hasn't been the same since... =/

- --Brendan
-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>

iQA/AwUBPV8KXgVk8xtQuK+BEQK/2wCfWI5MPGjE1El4IoYBLzGDD7Wj0Z4AmwWA
s0jynBML3sG3wsd+BSku72Cf
=idht
-----END PGP SIGNATURE-----

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email @spam@listservKILLspamspammitvma.mit.edu with SET PICList DIGEST in the body


More... (looser matching)
- Last day of these posts
- In 2002 , 2003 only
- Today
- New search...