Truncated match.
PICList
Thread
'your mail'
1994\08\31@190804
by
crocontroller discussion list
>
> Does anyone have any experience implementing digital
> filters, specifically low pass filters, on the lower end PICs,
> e.g. the 16C71?
>
One way to do it is inc or dec your variable every time you check your
input instead of passing the full input value. Variations on this theme
is the basis of DSP. Loop speed, adding some fraction of the difference
between input and output, etc. are all affect your cutoff. -Rick
'your mail'
1994\11\15@042453
by
crocontroller discussion list
1994\11\15@043108
by
crocontroller discussion list
Sorry to post here, but I can't seem to get off the list using
listserv.
Good interesting stuff, but my mailbox is bursting.
Please unsubcribe me
Thanks
seanl
KILLspamharlequin.co.uk
'your mail'
1995\04\05@045829
by
David Tait
Hi,
> I want to say David Tate, but I'm not sure.
Very close - David Tait.
I'm not sure my stuff will be useful to you. If you want to check,
Rafe Aldridge supplied me with a better schematic than my rough ASCII
version and this, plus Rafe's PCB patterns, is available in GIF form
as:
ftp://ftp.ee.ualberta.ca/pub/cookbook/comp/ibm/pic84pcb.zip
The files pic84pgm.zip (original programmer stuff) and pic84faq.zip
(a help file) are also there.
David
'your mail'
1995\06\27@032318
by
Brian Lane
|
-----BEGIN PGP SIGNED MESSAGE-----
On Mon, 26 Jun 1995, Berard wrote:
> Within the last 6 months or so I've seen someone
> refer to a project that they were working on
> that is similar to the 'Jumping Water Fountains'
> found in EPCOT Center at Walt Disney World
> in Florida. I've gone through the archived
> log files (thanks Nick/Jory) but still can't find
> any reference to this project - maybe I saw it
> at someones WWW site?
Hmm, this is one of my future projects, but I don't remember posting
anything to the list. Maybe you're just reading my mind!
>
> I'm going to try my hand at controlling such a setup
> with a PIC, but I would like to know what type
> of water pump works best for this type of 'pulsed'
> application.
I saw a TV show about the company that does these cool entertainment
water projects. They did the EPCOT one, as well as several others. One is
a very short pulse of water between pads, so you get a droplet about the
size of a golfball.
In the show they explained how they did their splashless water
fountain(single stream of water, entering destination pool with no
splash. Very cool looking!). They have a filter attached to the end of a
hose. Wat it does is straightens out the water direction, removing
turbulance.
If I remember right it was a plexiglass cylinder with a normal garden
hose connection on one end, and it contained a couple of mesh screens and
a whole bunch of straws(drinking straw sized).
I've always wanted to build a desktop version of this but I haven't
been able to locate a small, quiet pump to move the water. I've never
tried building a filter(but plan to One of These Days).
I sure would like to hear from others interested in building something
like this. If there is enough interest and its not all pic related I can
start a mailing list for it here on my machine.
Brian
- ---------------------------------------------------------------------------
email .....blaneKILLspam
.....guetech.com with 'Subject: blane-info' for PGP key
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1995\06\27@105238
by
Brian Lane
|
-----BEGIN PGP SIGNED MESSAGE-----
On Tue, 27 Jun 1995, Doug Sellner wrote:
> Using a pump for each fountain would be much to expensive, you should use
> solenoid valves and one pump to increase performance, decrease cost.
Correct, but do you have and sources for solenoids that can easily be
interfaced to water? I have an aircraft fuel solenoid(I think) that I was
going to try, but I can't find any other parts to use with it.
Does anyone have a source for various pumps, solenoids and tubing? I'd
like to work on this during my summer break. I have a couple of surplus
catalogs and I ordered a pump from one, but it doesn't put out a
continuous stream and is quite noisy.
I would like to create a 'desktop' version of the hopping blobs for the
spare space in my living room.
Brian
- ---------------------------------------------------------------------------
email EraseMEblanespam_OUT
TakeThisOuTguetech.com with 'Subject: blane-info' for PGP key
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'your mail'
1995\07\05@185353
by
jpq
>
> I've been following the discussion on IR communications
> with some interest, and have a question about the protocol
> used in commercial remote control units.
>
>
I know of a vendor who claims he can build a board that understands
SONY TV/VCR type transmitter pairs. I am trying to get him to
design a board for me that uses a pic to bring keypresses out to
an RS232 interface. (sort of a TV remote demodulator). Is there
any interest here for such a board?
- John
--
John Quintana Internet email: jpq
spam_OUTnwu.edu
DND-CAT Synchrotron Research Center Voice Phone: (708) 252-0223
APS/ANL Sector 5, Bldg. 400 FAX Phone: (708) 252-0226
9700 South Cass Avenue WWW: http://tomato.dnd.aps.anl.gov/~jpq/
Argonne, Illinois 60439
1995\07\06@223125
by
First Last
John Quintana writes:
JP>I know of a vendor who claims he can build a board that understands
JP>SONY TV/VCR type transmitter pairs. I am trying to get him to
JP>design a board for me that uses a pic to bring keypresses out to
JP>an RS232 interface. (sort of a TV remote demodulator). Is there
JP>any interest here for such a board?
I have already done this unit using a one-for-all remote.
Should I package it as a kit and sell it?
Gary Skinner, Electronic Solutions, Inc Denver CO
PS - there is an article in the latest issue of electronics now that
does
part of this job in a weird way.
1995\07\07@014257
by
John Quintana
|
>
> John Quintana writes:
> JP>I know of a vendor who claims he can build a board that understands
> JP>SONY TV/VCR type transmitter pairs. I am trying to get him to
> JP>design a board for me that uses a pic to bring keypresses out to
> JP>an RS232 interface. (sort of a TV remote demodulator). Is there
> JP>any interest here for such a board?
>
> I have already done this unit using a one-for-all remote.
> Should I package it as a kit and sell it?
>
> Gary Skinner, Electronic Solutions, Inc Denver CO
>
I have an application where I would be quite happy to purchase stuffed
PC boards. Email me directly, I'll tell you the project, and see
what we can work out. Right now, I just need a prototype to demonstrate
feasibility.
- John
--
John Quintana Internet email: @spam@jpqKILLspam
nwu.edu
DND-CAT Synchrotron Research Center Voice Phone: (708) 252-0223
APS/ANL Sector 5, Bldg. 400 FAX Phone: (708) 252-0226
9700 South Cass Avenue WWW: http://tomato.dnd.aps.anl.gov/~jpq/
Argonne, Illinois 60439
'your mail'
1995\10\04@223049
by
Marc Laclair
-------------------------------------------------------------------------------
Marc Laclair __ __ ____ ___ ___ ____
KILLspamlaclairKILLspam
primenet.com /__)/__) / / / / /_ /\ / /_ /
http://www.primenet.com/~laclair/ / / \ / / / / /__ / \/ /___ /
-------------------------------------------------------------------------------
On Tue, 3 Oct 1995, Daniel Rocha wrote:
> Hello there,
>
> I am a new member.
>
> Does anybody know of a good, cheap software simulator (freeware or shareware
> will do) for the PIC family.
>
> Daniel Rocha
>
Try anonymous ftp to 'ftp://ftp.ultranet.com/biz/mchip'
I think it is one of the last files in the dir. sim????.zip
Marc LaClair
'your mail'
1995\11\27@110222
by
Rick Miller
'your mail'
1995\12\12@162002
by
Ben L Wirz
'your mail'
1996\08\26@102907
by
Ben L Wirz
|
Vikram,
This should help:
On Mon, 26 Aug 1996, Vikram BAJAJ wrote:
> Hi everyone,
>
> I am a complete beginer to Micro-controllers.
>
> 1. Can any one suggest which microcontroller would be the best to start
> with in PIC series and what tools would I need to use any where can I
> get them, if possible in shareware? Is there any book for beginner or
> any material available on the net?
The overwhelming choice for a beginner PIC chip is the PIC16C84.
This is mainly because it features EEPROM memory which can be erased
without the use of a EPROM Eraser, a big advantage for a newbie. All the
software and documentation can be found on the Microchip Web site at:
http://www.mchip.com. A good book for beginners is Easy PIC'n.
I have PIC16C84's available along with a easy to build and cheap
($15 US) PIC programmer available on my Web page at:
http://cec.wustl.edu/~blw2/index.html I will also have the Easy PIC'n
books in available in a couple days.
Good Luck,
Ben
Ben Wirz For Great Deals on Nitinol Wire, H-Bridge IC's,
Wirz Electronics Polaroid Sonar Units, PIC 16C84's, and more
EraseMEblw2
cec.wustl.edu Hobbyist Robotic & Electronic Supplies, visit:
http://cec.wustl.edu/~blw2/index.html
'your mail'
1996\10\14@130805
by
John Payson
|
> Have any of you received a Warning [224] for the 16C84 when using a TRIS
> command??
> I have successfully assembled an file for the 16C54 w/ no warnings or
> errors, but if I
> change the assembler directives for a 16C84 the following warning is
> found whenever
> a TRIS is used.
>
> Warning[224]: Use of this instruction is not recommended.
Microchip does not recommend the use of the TRIS or option instructions
because of the possibility that future CPU's may not support such a thing.
I am aware of no actual plans to discontinue support for these instructions
and would hope that any future CPU's would allow setting the TRIS registers
without the annoying bank-switching that's required to do it the "right"
way [for example, it would probably be fairly easy to design a CPU so that
another page-zero address would decode to the upper I/O. For example, if
the PIC16C84 were modified so that addresses $80-$8F were mapped to $70-$7F
(and maybe, in consequence, $F0-FF as well) then TRIS PORTB could be simply
assembled as "MOVWF $76".
Personally, I find "TRIS PORTB" to be much clearer and more reasonable than
"BSF RPO / MOVWF PORTB / BCF RP0" which is what is otherwise required.
'your mail'
1996\12\16@114708
by
Byron A Jeff
>
> I desire to know if is possible to remove the code of protection from a
> contained program in a pic 16C57.
Please explain the justification of this desire? To a person on this list
we respect code protection. Why should we tell you how to break it?
BAJ
'your mail'
1997\06\26@060324
by
Ian Raymond Douglas
Hi Chao
I am also very interested in robotics and acquired an excellent book on
it by Gordon McComb. It is titled "The robot builders bonanza. 99
inexpensive robotics projects".
It is published by Tab Books, div of McGraw-Hill (1987) and is probably
a little bit dated but is full of useful and interesting circuits and
information. Hope this is of help.
Regards,
Ian Douglas
1997\06\26@170908
by
tim.kerby
Hi
I got a copy about a year ago and havent found anything better.
Everything else is too full of formula and theory and give no practical
advice. My only complaint is some parts are outdated and no longer
available (e.g. the speech synthesis stuff).
Tim
Ian Raymond Douglas wrote:
>
> Hi Chao
> I am also very interested in robotics and acquired an excellent book on
> it by Gordon McComb. It is titled "The robot builders bonanza. 99
> inexpensive robotics projects".
> It is published by Tab Books, div of McGraw-Hill (1987) and is probably
> a little bit dated but is full of useful and interesting circuits and
> information. Hope this is of help.
> Regards,
> Ian Douglas
'your mail'
1997\08\22@165221
by
Shane Nelson
|
Microchips "Embedded Control Handbook" has lots of application examples in
it. Helped me out alot. And if you can make it to one of there seminars I
found that very useful. Check out there webpage if you haven't
already. http://www.microchip.com.
-Shane.
On Fri, 22 Aug 1997, Andy Kunz wrote:
{Quote hidden}> >I am considering using a PIC16C73A for my next project. This will be my
> >first PIC project. I have a fair amount of experience with the Mototola
> >6805 and 6811 families. Does anyone know of a quick tutorial or a small
> >piece of literature that will bring me up to speed on Microchip's
> >instruction set quickly.
>
> Search the web for source examples. There are plenty of places out there.
>
> Andy
>
> ==================================================================
> Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
> Hardware & Software for Industry & R/C Hobbies
> "Go fast, turn right, and keep the wet side down!"
> ==================================================================
>
'your mail'
1997\12\05@121301
by
Dave Celsnak
On Fri, 5 Dec 1997, stephen mcalonan wrote:
> Hello everyone!
> I am using the 5 channel A/D on the PIC16C73A running at 5V. I am using
> an external voltage reference of 2.5V on pin RA3/AN3/Vref. My question
> is: Should I use a zener diode, etc. to protect the port from voltages
> from 2.5V to Vdd+.6 or will this just give me a full scale reading? Are
> there any other thought on protecting A/D inputs? Thanks in advance.
> Steve McAlonan
I'm sorry, but all I can add to this one is more questions. I am using
the '72 part with 5 channel A/D's also. I have the Vref from Vdd (+5V).
I seem to have problems if I don't tie the unused channels to ground. I
remember CMOS parts needing unused inputs tied to Vcc or Vdd. Is this
true for ALL pins on the PIC (I believe I can clear unused I/O pins to
outputs, and forget about making sure they are grounded)?
Thank you, 6500
7000
Dave Celsnak ___7500
/ / 8000 (Shift!)
/-/
/ / RPM
/ /
/ /
1997\12\05@154131
by
stephen mcalonan
|
>> Hello everyone!
>> I am using the 5 channel A/D on the PIC16C73A running at 5V. I am
using
>> an external voltage reference of 2.5V on pin RA3/AN3/Vref. My
question
>> is: Should I use a zener diode, etc. to protect the port from
voltages
>> from 2.5V to Vdd+.6 or will this just give me a full scale reading?
Are
>> there any other thought on protecting A/D inputs? Thanks in advance.
>> Steve McAlonan
> I'm sorry, but all I can add to this one is more questions. I am
using
>the '72 part with 5 channel A/D's also. I have the Vref from Vdd
(+5V).
>I seem to have problems if I don't tie the unused channels to ground.
I
>remember CMOS parts needing unused inputs tied to Vcc or Vdd. Is this
>true for ALL pins on the PIC (I believe I can clear unused I/O pins to
>outputs, and forget about making sure they are grounded)?
>
>Thank you, 6500
> 7000
>Dave Celsnak ___7500
Dave,
Setting all unused pins on your '72 to outputs prevents harmful
oscillations on those pins. Besides increasing power consumption that
may be affecting your A/D readings.
-Steve
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
'your mail'
1998\01\27@061304
by
John Payson
|
> Philip Cowley wrote:
>
> > I need to count the pulses coming from a pair
> > of quadrature incremental encoders.
>
> Are these optical encoders, or mechanical?
> The latter have _awful_ signals.
While I agree that mechanical encoders' signals leave something to be
desired, they need not cause too many problems. The key is to interpret
the encoder as progressing through the states "1X X1 0X X0" rather than
the more conventional "11 01 00 10". Since at least one of the two
contacts should be stable at any given time, the encoder will always be
stable in at least one of the four positions mentioned.
For some types of software implementation, this method will be equivalent
to adding one click worth of hysteresis to the processing logic. The
interpretation of the signal as having those "X" states, however, will
allow for other implementations which would not be feasible otherwise.
For example, on a chip with two independently-programmable edge-detect
interrupts, the interrupts could be programmed so that each rotational
click would cause one interrupt [for example, if I'm looking for and see
a rising edge on the first input, I would check the state of the second
input and then disable the first input's interrupt-on-change while I
enabled the second's].
Mechanical encoders can be tricky to be sure, and the 4-bit ones may be
easier to get good results with than the 2-bit ones; still, the availa-
bility of many cheap mice that work decently proves that even junky 2
bit encoders can be made to work reliably.
1998\01\27@064912
by
Philip Cowley
>While I agree that mechanical encoders' signals leave something to be
>desired, they need not cause too many problems. The key is to interpret
>the encoder as progressing through the states "1X X1 0X X0" rather than
>the more conventional "11 01 00 10". Since at least one of the two
>contacts should be stable at any given time, the encoder will always be
>stable in at least one of the four positions mentioned.
I am actually using optical encoders...
See my reply in the PICLIST
Phil
'your mail'
1998\03\23@174705
by
John Halleck
|
part 0 2520 bytes content-type:TEXT/HTMLontent-Type: TEXT/HTML
Content-ID:
Content-Description:
LA PEQUENA JESSICA MYDEK TIENE SIETE AnOS DE EDAD Y SUFRE DE UN
>>
> > AGUDO Y MUY RARO CASO DE CARCINOMA CEREBRAL. ESTA
CONDICION
>> > > PROVOCA DIVERSOS TUMORES MALIGNOS EN EL
CEREBRO, SIENDO UNA
>> > > ENFERMEDAD TERMINAL.
>> >
>
>> > > LOS DOCTORES LE HAN PRONOSTICADO A JESSICA SEIS
MESES DE VIDA Y
>> > > COMO PARTE DE SUS ULTIMOS DESEOS, ELLA
QUISO INICIAR UNA CADENA
>> > > DE E-MAILS INFORMANDO DE SU
CONDICION Y ENVIAR EL MENSAJE A LA
>> > > GENTE PARA QUE
:
>> > >
>> > > **** VIVA AL MAXIMO Y
DISFRUTEN DE CADA MOMENTO DE
>> > > SU VIDA ****
UNA OPORTUNIDAD QUE ELLA NUNCA TENDRA.
>> > >
ADICIONALMENTE, LA SOCIEDAD AMERICANA DE LUCHA CONTRA
>> > > EL
CANCER JUNTO CON OTRAS EMPRESAS SPONSOR ACORDARON DONAR TRES
>> >
> CENTAVOS QUE SERAN DESTINADOS A LA INVESTIGACION DEL CANCER
POR
>> > > CADA PERSONA QUE ENVIE ESTE
MENSAJE.
>> > > POR FAVOR, DENLE A JESSICA Y A TODAS LAS
VICTIMAS DEL CANCER
>> > > UN A OPORTUNIDAD.SI EXISTIERA
ALGUNA DUDA, ENVIE ESTE
>> > > E-MAIL A LA SOCIEDAD AMERICANA DE
LUCHA CONTRA EL CANCER A
>> > >
ACS@aol.com.
>> > >
>>
> > Por cada persona a la que le envie este e-mail, la
Sociedad
>> > > Americana de Lucha contra el Cancer donara tres
centavos para la
>> > > investigacion.
>> >
>
>> > > Solo haga lo siguiente:
>> > > Primero
dirija este e-mail a
ACS@aol.com y luego, en la
parte
>> > > donde dice CC: agregue todos los amigos o colegas
que pueda. Es
>> > > por una buena causa, no se limite solo a
borrarlo.
>> > >
>> > > Gracias!!!!!!
>>
'your mail'
1998\06\22@205345
by
Timothy D. Gray
:0 Hf
* ^From: 3ds6rl&*
/dev/null
Here's a procmail recipie to block this guy's spam everyone. Procmail
filtering of email marketing works better!
On Tue, 23 Jun 1998, 3ds6rl wrote:
> Authenticated sender is <RemoveME3ds6rlEraseME
EraseMEatt.net>
> Subject: **Bull's Eye Software
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> Content-Transfer-Encoding: 7bit
>
> EMAIL MARKETING WORKS!!
>
Remember only morons spam!
I wish I had gotten the spam directly so that I could have made a better
filter.
'your mail'
1998\07\15@231152
by
Timothy D. Gray
Someone please find out who this is and put an AXE through their computer
or just mount a degaussing coil on top of their hard drive....
On Thu, 16 Jul 1998, ____Bulll*sEye**_ wrote:
> Subject: _-*Bull_s*Eye*Targeting*Software-
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> Content-Transfer-Encoding: 7bit
>
> EMAIL MARKETING WORKS!! Make enemies faster than any other technique!
1998\07\16@011059
by
David Sorlien
I agree Tim. I spent five minutes of web searching and found some interesting
reading about this spammer. Not much we can do about it, many have tried to
muzzle the crook, none have succeeded. This link sums it all up:
http://members.theglobe.com/SpamSucks/spamspeak.html#worldtouch1.ram
Dave
Timothy D. Gray wrote:
> Someone please find out who this is and put an AXE through their computer
> or just mount a degaussing coil on top of their hard drive....
>
> On Thu, 16 Jul 1998, ____Bulll*sEye**_ wrote:
>
> > Subject: _-*Bull_s*Eye*Targeting*Software-
1998\07\16@113515
by
n/a
David Sorlien wrote:
>
> I agree Tim. I spent five minutes of web searching and found some interesting
> reading about this spammer. Not much we can do about it, many have tried to
> muzzle the crook, none have succeeded. This link sums it all up:
>
> http://members.theglobe.com/SpamSucks/spamspeak.html#worldtouch1.ram
>
> Dave
>
> Timothy D. Gray wrote:
>
> > Someone please find out who this is and put an AXE through their computer
> > or just mount a degaussing coil on top of their hard drive....
> >
> > On Thu, 16 Jul 1998, ____Bulll*sEye**_ wrote:
> >
> > > Subject: _-*Bull_s*Eye*Targeting*Software-
On the Magpage.com I've gotten a confirmed kill, on the one from uu.net
I've received and automated response. I'll probably have to wait a week
before it's a confirmed kill (user has had his account terminated).
--
Neil Cherry http://home.att.net/~ncherry RemoveMEncherryspam_OUT
KILLspamworldnet.att.net
'your mail'
1998\08\14@022248
by
Dr. Imre Bartfai
|
Hi,
I would suggest you get some higher-level language development
environment, such as PicBasic, PicBasic Pro or CCS. The prices are $99,
$249 and $99, respectively. Why I suggest them? Because of all of them
have a native RS232 and I2C support, so an appropriate access is one
single statement. No project files, no linking stuff etc. Your project
will consist of a single source file.
The compiled file can be burned using Picstart + (it is not a big deal for
it as the Tait's programmer is available for free - you need only build it
for less than $10).
The links:
http://www.melabs.com/mel/home.htm
http://www.ccsinfo.com/picc.html
I hope it can help you.
Imre
On Thu, 13 Aug 1998, Michael van der Zee wrote:
> hi,
>
> I'm new at this pic programming. I belive I need a push in the right direction
.
>
> I've got a pic 16c84 and a "picstart plus" programmer from microchip with mpas
m.
>
> I'm lost in all kinds of project files linkers and *.asm.
>
> What I like to do is the following,
>
> I need a I2C or UART (or any other) communication, and olso my own code ( I ne
ed to count inputs only). My own code is not the problem but compiling it with t
he I2C. Some AN*** directory's on the cd shiped with the programmer contain asm
files and other, but the files are all for different pic divices...??
>
> can I use these files on a 16c84 ..?
> do I need template's ..?
>
> I belive that it must be verry simple (couse thats what a read everywere) but
I'm lost.
>
> I olso keep getting the same error like this:
>
> *************
> (Lots of errors)
> Error[147] C:\PROGRA~1\MPLAB\EXAMPLE\I2CBUS.ASM 391 : Directive not allowed
when generating an object file (ORG)
> Error[152] C:\PROGRA~1\MPLAB\EXAMPLE\I2CBUS.ASM 392 : Executable code and da
ta must be defined in an appropriate section
{Quote hidden}> (but alway's unable to find output file)
> MPLAB is unable to find output file "I2CBUS.O".
>
> Build failed.
> *************
> What am I doeing wrong here...??
>
>
> please help
>
> thanx
>
> Michael.
>
>
'your mail'
1998\09\29@143117
by
kotay
>
> Has the L293 Push-Pull Four Channel Driver been replaced by a newer =
> product? The closest thing I can find is the LM18293, but their =
> datasheet shows it as an obsolete product. Unfortunately, it doesn't =
> give a replacement!!
>
I think the L293D is still made by SGS-Thomson (it's listed
in my Mouser catalog). However Texas Instruments makes an
improved version: SN754410NE. The TI part has 1A current
capability as opposed to 600mA for the L293D. Also, there
is extra logic to prevent glitches.
Keith
Keith D. Kotay
Ph.D. Candidate
Dartmouth College
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'your mail'
1999\03\17@143428
by
Byron A Jeff
>
> Hi there !
>
> I want to build a programmable alarm-clock bases on a PIC. The use of
> it is to turn ON & OFF lamps, and radios in different parts of the
> house while I am on vacations (same time each day maybe for a week).
> Precision is not to important, but I do need 8 programmable outputs.
>
> Has anyone done something like this. Vacations are close & I want to
> finish it.
I've done something like it. I have a couple of different light controllers.
One is sunset driven, then other controls my basement lights. Both use relays
to control their respective lights.
The one thing you'll need that I didn't is a real time clock. The PIC may
or may not be able to do the job depending on how well tuned the crystal is.
Or you can get a RTC like one of the Dallas Semi offerings.
There's several ways of putting it together. You could have multiple
self-contained units, one for each device you wish to control. Or for more
centralized control you could have one central unit and wire out control
lines to each device.
Good Luck,
BAJ
1999\03\19@012019
by
: Cassie Carstens
> > I want to build a programmable alarm-clock bases on a PIC. The use of
> > it is to turn ON & OFF lamps, and radios in different parts of the
> > house while I am on vacations (same time each day maybe for a week).
Hi
Have done similar thing with ST62x
One port reads 4040 counter outputs(lower 5 bits). This is random
number in minutes and seconds. Three spare switches TV, lounge light
and kitchen. 4 more ports drive front rooms and barthroom.
Only one of the 4 lights is on at any particular time. The
tv+lounge+kitchen is always on. After 6 a random number is taken and
represents the minutes to wait before any lights get switched. The
seconds time is the delay between light off untill next light on
Oh yes, which light will get switched on ? The bits of the 4040
decides that. There are more features but i'm wasting bandwidth.
mail me.
Regards
Cassie
'your mail'
1999\09\16@101006
by
John Hallam
|
You only need this if you want to determine the direction of a
once-off sound, though. If the sound has any reasonable duration (unlike
the hand-clap signal mentioned earlier), you can do a fair job of finding
its direction by swivelling your ears to maximise amplitude or swivelling
your head to minimise arrival time difference. Reflections can throw this
strategy off, but if the sensor system is moving the simple scheme works
even better.
(We built a phonotaxis system (modelled on the cricket) using a
pair of tiny electret microphones, some electronic delay and mixing
circuitry, and a couple of A/D's to sit on top of a Khepera mobile robot.
It can follow the 4.7kHz mating calls emitted by male crickets.
Unfortunately it can't mate with them ;-) Oh, and the programmable gains
and delays were controlled by a PIC speaking I2C protocol to a variety of
other bits and pieces.)
John Hallam
School of AI, Division of Informatics, University of Edinburgh, Scotland.
On Thu, 16 Sep 1999, Andy Kunz wrote:
> Nils,
>
> I would be interested in this as well. I did some work on an audio
> tachometer, and limited myself to shotgun mikes. To locate a direction,
> though, you'll need another technique, probably dealing as much with phase
> differential as anything else.
>
> Andy
'your mail'
1999\10\06@040958
by
Dr. Imre Bartfai
Hi,
AFAIK the Parallax Application Notes have an example. See
ftp.parallaxinc.com
Regards,
Imre
On Tue, 5 Oct 1999, a b wrote:
{Quote hidden}> Hello Picers...,
>
> Can anybody tell me how to read out a Rotary encoder with a pic (16f84)??
>
> Every help is welcome,
> Manny Thank's,
> Joep Schroen (PD3ROG)
>
> ______________________________________________________
> Get Your Private, Free Email at
http://www.hotmail.com
>
>
1999\10\14@045200
by
Dr. Imre Bartfai
|
Hi,
I will mark below the errors and a suggestion for the correction.
Regards,
Imre
On Mon, 11 Oct 1999, Fansler, David wrote:
{Quote hidden}> I sent this plea for help to Tech-Tools on Oct. 7, 1999 - but have not heard
> back from them. Anyone (left) on the pic list got any ideas? I am using
> ver 4.02 of their TDE and their CVASM16
>
> ____________________________________________________________________________
> ________
> I am in the process of writing my first true PIC assembler program, and hate
> to bother you but I seem to have a problem. The code so far is:
>
> device pic16c74A,xt_osc,wdt_off,protect_off
> org 00
> goto Start
> org 05h
> Start
> ;* Set Up Ports
> bcf STATUS, RP0 ;set to bank 0
;Instead:
bcf RP0
> bcf STATUS, RP1 ;
bcf RP1
> clrf PORTA ;clear all ouput latches
> clrf PORTB ;clear all output latches
> clrf PORTC ;clear all output latches
> clrf PORTD ;clear all output latches
> clrf PORTE ;clear all output latches
> bsf STATUS, STATUS.5 ;set to bank 1
; Uugh! It shows you misunterstand! Status.5 also contains the status
;address, such way it is completely confused. There are two good variants:
; either:
bsf STATUS.5
;or (I prefer the former)
bsf STATUS,5
{Quote hidden}> movlw 00000111b ;data to set PA0-PA2 as inputs
> movwf TRISA ;set up port A
> movlw 11111100b ;data to set PB0-PB1 to inputs
> movwf TRISB ;set up Port B
> movlw 10010111b ;data to set PC0-PC2, PC5, PC7 to
> inputs
> movwf TRISC ;set up Port C
> movlw 11111111b ;data to set PD0-PD7 to
> inputs
> movwf TRISD ;set up Port D
> movlw 00000000b ;data to set PE0-PE2 as outputs
> movwf TRISE ;set up Port E
> end
>
> Actually there are comments before the code and a bunch of retlw between the
> movwf TRISE and the end statement. The code built cleanly before adding the
> code to set up the ports. The problem is that the assembler is not
> recognizing the RP0 and RP1 symbols. I tried a couple of others and they
> failed also. The error messages are:
>
> ERROR TSAIL.SRC 188 : bit number must bee from 0 to 7
> ERROR TSAIL.SRC 189 : bit number must bee from 0 to 7
> ERROR TSAIL.SRC 195 : bit number must bee from 0 to 7
>
> Where "bcf STATUS, RP0 ;set to bank 0 " is line 188
>
> I did an assembly with the /D option and the symbol table listed :
> STATUS=0003, RP0=5003 & RP1=6003 so the symbols seem to be there, but
> contain more bits than needed. The listing notes that subsets of a label
> include the primary label value. So where RP0 is bit 5 of the STATUS
> register, it has a value of 5003.
>
> Any help would be appreciated.
>
> David V. Fansler
> Network Administrator
> TriPath Imaging, Inc. (Formerly AutoCyte, Inc)
> 336-222-9707 Ext. 261
>
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> Now Showing!
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> <
http://www.mindspring.com/~dfansler> Updated September 23, 1999
>
>
1999\10\14@045415
by
Dr. Imre Bartfai
|
On Mon, 11 Oct 1999, Agnes en Henk Tobbe wrote:
> Did you include the standard file for the model PIC where RP0 and RP1 are
> defined....?
Hi,
it is not needed, and superfluous. Such standard file does not exist for
CVASM, rather the compiler itself has a built-in table.
Regards,
Imre
{Quote hidden}> -----Oorspronkelijk bericht-----
> Van: Fansler, David <
DFANSLERSTOPspam
spam_OUTAUTOCYTE.COM>
> Aan:
spamBeGonePICLISTSTOPspam
EraseMEMITVMA.MIT.EDU <
KILLspamPICLISTspamBeGone
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> Datum: maandag 11 oktober 1999 22:54
>
>
> >I sent this plea for help to Tech-Tools on Oct. 7, 1999 - but have not
> heard
> >back from them. Anyone (left) on the pic list got any ideas? I am using
> >ver 4.02 of their TDE and their CVASM16
> >
> >___________________________________________________________________________
> _
> >________
> >I am in the process of writing my first true PIC assembler program, and
> hate
> >to bother you but I seem to have a problem. The code so far is:
> >
> >device pic16c74A,xt_osc,wdt_off,protect_off
> > org 00
> > goto Start
> > org 05h
> >Start
> > ;* Set Up Ports
> > bcf STATUS, RP0 ;set to bank 0
> > bcf STATUS, RP1 ;
> > clrf PORTA ;clear all ouput latches
> > clrf PORTB ;clear all output latches
> > clrf PORTC ;clear all output latches
> > clrf PORTD ;clear all output latches
> > clrf PORTE ;clear all output latches
> > bsf STATUS, STATUS.5 ;set to bank 1
> > movlw 00000111b ;data to set PA0-PA2 as inputs
> > movwf TRISA ;set up port A
> > movlw 11111100b ;data to set PB0-PB1 to inputs
> > movwf TRISB ;set up Port B
> > movlw 10010111b ;data to set PC0-PC2, PC5, PC7 to
> >inputs
> > movwf TRISC ;set up Port C
> > movlw 11111111b ;data to set PD0-PD7 to
> >inputs
> > movwf TRISD ;set up Port D
> > movlw 00000000b ;data to set PE0-PE2 as outputs
> > movwf TRISE ;set up Port E
> > end
> >
> >Actually there are comments before the code and a bunch of retlw between
> the
> >movwf TRISE and the end statement. The code built cleanly before adding
> the
> >code to set up the ports. The problem is that the assembler is not
> >recognizing the RP0 and RP1 symbols. I tried a couple of others and they
> >failed also. The error messages are:
> >
> >ERROR TSAIL.SRC 188 : bit number must bee from 0 to 7
> >ERROR TSAIL.SRC 189 : bit number must bee from 0 to 7
> >ERROR TSAIL.SRC 195 : bit number must bee from 0 to 7
> >
> >Where "bcf STATUS, RP0 ;set to bank 0 " is line 188
> >
> >I did an assembly with the /D option and the symbol table listed :
> >STATUS=0003, RP0=5003 & RP1=6003 so the symbols seem to be there, but
> >contain more bits than needed. The listing notes that subsets of a label
> >include the primary label value. So where RP0 is bit 5 of the STATUS
> >register, it has a value of 5003.
> >
> >Any help would be appreciated.
> >
> >David V. Fansler
> >Network Administrator
> >TriPath Imaging, Inc. (Formerly AutoCyte, Inc)
> >336-222-9707 Ext. 261
> >
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> ><
http://www.mindspring.com/~dfansler> Updated September 23, 1999
>
>
'your mail'
2000\03\11@105054
by
Byron A Jeff
>
> I have heard that a /JW pic is destroyed if it is programmed with code
> protect. (That it is no longer possible to erease it with UV ligt and
> program it) Is this correct?
Yes. That is correct. The code protect bits are metal shielded from the UV
light from the windows. Once set the code is locked and the part is ruined.
If you can it's best to do development with a EEPROM based part like a
16F877. Simply erasing the part will reset the code protection. Plus with
in circuit tools like Tony Nixon's ROMzap (http://www.picnpoke.com/demo/ROMzap.zip)
which programs the part through the serial port, development can move very
quickly.
BAJ
>
'Your mail'
2002\09\13@213538
by
cdb
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