'bye for a while

J

John Fields

Guest
I've just taken on a contract which is going to keep me busy pretty
much full time until the end of the month, plus I'm finishing up
editing a book for Sams Technical Publishing, plus I've got an
interesting instrumentation application to study and then quote, so
I'm going to be outta here for a month or so...

See ya,

--
John Fields
 
John Fields wrote:

I've just taken on a contract which is going to keep me busy pretty
much full time until the end of the month, plus I'm finishing up
editing a book for Sams Technical Publishing, plus I've got an
interesting instrumentation application to study and then quote, so
I'm going to be outta here for a month or so...
Click to expand...
Congratulations on acquiring a real life.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org
 
Dirk Bruere at Neopax wrote...
... plus I'm finishing up editing a book ...
Click to expand...
Speaking of which...


--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)
 
Winfield Hill wrote:
Dirk Bruere at Neopax wrote...

... plus I'm finishing up editing a book ...


Speaking of which...
Click to expand...
Don't tease :)

Can you please give an ETA for the next edition?

thanks,

Al
 
On Mon, 11 Oct 2004 12:14:38 +1000, in sci.electronics.design you
wrote:

Winfield Hill wrote:
Dirk Bruere at Neopax wrote...

... plus I'm finishing up editing a book ...


Speaking of which...

Don't tease :)

Can you please give an ETA for the next edition?

thanks,

Al
Well, if we could prevent Win for spending so much time
Click to expand...
here............





martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.
 
Al Borowski wrote...
Winfield Hill wrote:
Dirk Bruere at Neopax wrote...

... plus I'm finishing up editing a book ...

Speaking of which...

Don't tease :)
Can you please give an ETA for the next edition?
Click to expand...
That's what our publisher says (for the last 7 years).
But we are working on it. You won't be disappointed,
it'll be good. Says me.


--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)
 
On Mon, 11 Oct 2004 22:03:35 GMT, Joerg
<notthisjoergsch@removethispacbell.net> wrote:


Now if I could have just one more wish: Would it be possible to add some
micro controller stuff into the next AoE?
Click to expand...
And not treat MOSFETs and JFETs together in the same section....?
--

"What is now proved was once only imagin'd." - William Blake, 1793.
 
Speaking of cheap micros, are there any that can be programmed with
nothing but a serial bit and one 5V supply?
Click to expand...
Do you mean, programmed via a serial port?

If so, you might be interested in a bootloader. Its basically a
microcontroller, programmed so it can program itself over a serial port.
Of course only micros that can write their own flash can do this.

cheers,

Al
 
In article <W%Dad.3629$y77.2757@trnddc05>,
Rich Grise <null@example.net> wrote:
[...]
Speaking of cheap micros, are there any that can be programmed with
nothing but a serial bit and one 5V supply?
Click to expand...
Philips 8?C51RD2 does that the first time you power it up. After you've
made it into a product, you can either (a) call 0FC00H or hold PSEN/ low
to get back into the programming mode.

--
--
kensmith@rahul.net forging knowledge
 
Sure. All the Atmel AVRs can be programmed serially, with six wires. Power,
Ground, Reset, SCL, MOSI, and MISO.

--
KC6ETE Dave's Engineering Page, www.dvanhorn.org
Microcontroller Consultant, specializing in Atmel AVR
 
"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:nQTad.2537$6q2.654@newssvr14.news.prodigy.com...
Hi Rich,

I just looked up a 68HC705P6 at Newark, and Yikes! They're $3.77. 5 years
ago, they were like 89 cents, which is pretty cool for 4x ADCs and stuff.


Ouch. Same with others. The vanilla edition is under $1 but there will
be no ADC or anything. Oh, you want a steering wheel? That'll be an
extra $1. Oh, tires, too? That'll come to a total of $3.
Click to expand...
Microchip just launched some new very small outline micros (SOT-23 package);
PIC10F200T . Has limited performance at a price of 0.3$, including a 8 bit
timer, watchdog and 4MHz operation

It may not comply with bigger designs, but is so cheap that it might replace
glue logic with the added feature of easy re-configuration of the
functionality

Cheers

Klaus
 
Naa, no microprocessors please. It restricts the lifetime of a book.
While the rest of an electronics book it pretty timeless, the section
about microprocessors and logic families makes it look old pretty quick.
Tubes, PIC ? Wasn't this the stuff grandpa worked with when he was
young ?
Click to expand...
Sure, chips come and go, but cores last and evolve for ages.

8051 - Introduced 1980 - 24 years old
ARM1 - 1985 - 19 years old
Z80 - 1976 - 28 years old
PIC - 1975 - 29 years old

There are alot of things that are not specific to any one
microcontroller, but would still be very handy to include.

cheers,

Al


Rene
Click to expand...
 
Hi Al,

Do you mean, programmed via a serial port?

If so, you might be interested in a bootloader. Its basically a
microcontroller, programmed so it can program itself over a serial
port. Of course only micros that can write their own flash can do this.
Click to expand...
The MSP can, so this may be an option.

Regards, Joerg

http://www.analogconsultants.com
 
Hi Klaus,

Microchip just launched some new very small outline micros (SOT-23 package);
PIC10F200T . Has limited performance at a price of 0.3$, including a 8 bit
timer, watchdog and 4MHz operation


These are nice. However, 768 Bytes of program space might just do but 24
Click to expand...
bytes of RAM is a squeeze.

It may not comply with bigger designs, but is so cheap that it might replace
glue logic with the added feature of easy re-configuration of the
functionality


Could be. But when I talked to an engineer who designs modules for
Click to expand...
appliance control he said that it is often best to stay with a really
low cost Asian micro. Much less than 30c. In his case that meant
4bitters instead of 8bit.

Regards, Joerg

http://www.analogconsultants.com
 
"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:SjUbd.30831$QJ3.3870@newssvr21.news.prodigy.com...
These are nice. However, 768 Bytes of program space might just do but 24
bytes of RAM is a squeeze.
Click to expand...
They're competing with some of the smaller AVRs... the ATTiny15L has 1KB of
program space and '0 data bytes'! -- Except that you have 32 byte-wide
registers, and only 16 can be addressed with immediate mode instructions, so
many assembler programmers are already used to thinking of 16 of them more
as 'storage' than 'working' registers.
 
"Joel Kolstad" wrote:

"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:SjUbd.30831$QJ3.3870@newssvr21.news.prodigy.com...
These are nice. However, 768 Bytes of program space might just do but 24
bytes of RAM is a squeeze.
Click to expand...
I must say I was puzzled by this comment. I've done uC applications where only
3 or 4 RAM bytes were required.

I've done *really* complex ones with 24.

68 or more allows just about anything. Unless you're related to Messrs G*tes
and Co

Gibbo
 
On Monday 11 October 2004 04:44 pm, Joerg did deign to grace us with the
following:

Hi Rich,

Speaking of cheap micros, are there any that can be programmed with
nothing but a serial bit and one 5V supply? ...


Not really, I think. Most need JTAG which is quite a bunch of wires. I
do not believe it was necessary to have this many but it's the standard.
I wish there was a scheme like Dallas uses it on their memory chips.

I am just exploring how to monitor three to four (pretty low) voltages
with a vanilla MSP430. Not so fast, says the data sheet. It was geared
towards just measuring resistors and not voltages like the Philips parts
were. I was hoping to replace a whole plethora of parts with an MSP but
if this forces me to use a $2 version with an ADC or use external opamps
that throws a wrench in there. Too expensive. It is amazing, even if a
discrete board holds 50 parts or so it is still a lot cheaper than that.
Click to expand...
I just looked up a 68HC705P6 at Newark, and Yikes! They're $3.77. 5 years
ago, they were like 89 cents, which is pretty cool for 4x ADCs and stuff.

Cheers!
Rich
 
Atmel's Tiny-11 is $0.25 More or less the same thing, more mips, less
internal cruft.

I have code on my web page for a noise generator, and some other functions.

I agree about having some part of AofE talk about using processors in place
of conventional circuitry. I recently did a small repeater controller
(2-way radio) in a tiny-11. Very slick, only a few discretes.

There's a lot of things that I've done in the past with TTL or 4000 logic
that I would wrap up in an AVR today, and gain features, shrink the board,
and shrink the cost!

You don't have to be all that processor-specific about it either.
Pics, AVRs, 340s, Z8s, all have a clock, timers, and I/O pins, after all.

--
KC6ETE Dave's Engineering Page, www.dvanhorn.org
Microcontroller Consultant, specializing in Atmel AVR
 
They're competing with some of the smaller AVRs... the ATTiny15L has 1KB
of program space and '0 data bytes'! -- Except that you have 32 byte-wide
registers, and only 16 can be addressed with immediate mode instructions,
so many assembler programmers are already used to thinking of 16 of them
more as 'storage' than 'working' registers.
Click to expand...
"already"? I've been working with the AVR for about 6 years or so, and I
have been doing it this way since about the first week.

As "one of them guys", here's how I see it:

R0 reserved for LPM (RETLW) in smaller AVRs
R1-15 "the cheap seats", works with most instructions, bitflags
R16-25 normal regs, works with all instructions except LPM
R26,27 pointer or normal
R28,29 pointer or normal
R30,31 Needed for LPM instruction, otherwise pointer or normal

--
KC6ETE Dave's Engineering Page, www.dvanhorn.org
Microcontroller Consultant, specializing in Atmel AVR
 
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