I wanted to take this opportunity to thank everyone who has
contributed so much wisdom on this and the other two microcontroller
threads. The last time I personally designed with uCs was 25+ years
ago. Much has changed, and you have given me lots to think about!
Of course, there was no unani
Hi
Ok, *but*
Power?
Mounting / circuit board?
LED's?
Resistors?
Bypass caps?
Control inputs?
I believe I first learned how fast wire turns into "something else" when
there's a short while JFK was president. That lesson in doing things quick and
dirty has stuck with me. If a gizmo is going to k
bow...@gmail.com said:
> For making a blinking LEDs, it is hard to beat a 74LS74. However, a PIC, is
> probably less expensive! :)
Thanks. :)
I was going to send a wise-ass comment, but then I checked some numbers.
Digikey, one-off DIP pricing:
$0.62 SN74LS74
$0.55 PIC10F200
$0.33 SN74
Bah, 8 pins is way overkill for a fan controller, Microchip has a uC in a SOT-6
package that could probably do the job :)
Didier
Chris Albertson wrote:
>> But for many applications, the inevitable overhead
>> (power, heat, external components, OS, etc) simply
>> eliminates the gain of having
For making a blinking LEDs, it is hard to beat a 74LS74. However, a PIC, is
probably less expensive! :)
On May 26, 2013, at 13:33, Bob Camp wrote:
> Hi
>
> If you head over to the auction sites and do a bit of creative digging /
> bidding, the Arduino clones are amazingly cheap. They easily b
I use the Arduino as a rapid prototype development platform. I build the
application and the hardware on the Arduino and then move the cpu to a
standalone board. You can also use the Arduino as a programmer much like
someone else suggested.
Bob
On May 26, 2013, at 13:19, Chris Albertson wrot
Hi
If you head over to the auction sites and do a bit of creative digging /
bidding, the Arduino clones are amazingly cheap. They easily beat the $12 or so
Freescale and TI demo boards by a wide margin cost wise. Bang for the buck
wise, indeed the demo boards win out. For blinking a LED, runnin
A fan controller (8-pin DIP package) is simple enough to build on perf
board. But mostly I agree that it is best to buy these on PCBs. You can
use them right out of the box. I do have an Arduino and it's advantage is
that you can build very fast. I had a device that measured the resistance
ac
Hi
On May 26, 2013, at 11:21 AM, Herbert Poetzl wrote:
> On Sun, May 26, 2013 at 07:46:38AM -0400, Bob Camp wrote:
>> Hi
>
>> On May 25, 2013, at 11:26 PM, Herbert Poetzl wrote:
>
>>> On Sat, May 25, 2013 at 09:26:02PM -0400, Bob Camp wrote:
Hi
>
I realize this is a bit like water
On 5/26/13 9:00 AM, Chris Albertson wrote:
But for many applications, the inevitable overhead
(power, heat, external components, OS, etc) simply
eliminates the gain of having a better/faster CPU.
Sometimes I end up using a 6 or 8 pin PIC with only
a few lines of code to to solve complex problems
> But for many applications, the inevitable overhead
> (power, heat, external components, OS, etc) simply
> eliminates the gain of having a better/faster CPU.
>
> Sometimes I end up using a 6 or 8 pin PIC with only
> a few lines of code to to solve complex problems where
> a (F)PGA/CPLD design woul
On Sun, May 26, 2013 at 07:46:38AM -0400, Bob Camp wrote:
> Hi
> On May 25, 2013, at 11:26 PM, Herbert Poetzl wrote:
>> On Sat, May 25, 2013 at 09:26:02PM -0400, Bob Camp wrote:
>>> Hi
>>> I realize this is a bit like water torture - sorry about that.
>>> If I go to Microchip Direct and ask fo
ou are not forced to re-learn everything when you move to a new family either.
Robert G8RPI.
From: Charles P. Steinmetz
To: TimeNuts
Sent: Saturday, 25 May 2013, 21:09
Subject: [time-nuts] Follow-up question re: microcontroller families
On another thread,
Hi
On May 25, 2013, at 11:26 PM, Herbert Poetzl wrote:
> On Sat, May 25, 2013 at 09:26:02PM -0400, Bob Camp wrote:
>> Hi
>
>> I realize this is a bit like water torture - sorry about that.
>
>> If I go to Microchip Direct and ask for a PIC 18F with two
>> UARTS and two A/D's I get the PIC18F86
On Sat, May 25, 2013 at 09:26:02PM -0400, Bob Camp wrote:
> Hi
> I realize this is a bit like water torture - sorry about that.
> If I go to Microchip Direct and ask for a PIC 18F with two
> UARTS and two A/D's I get the PIC18F86J72 and PIC 18F87J72.
> To me the second one is the obvious winner.
Hi
I realize this is a bit like water torture - sorry about that.
If I go to Microchip Direct and ask for a PIC 18F with two UARTS and two A/D's
I get the PIC18F86J72 and PIC 18F87J72. To me the second one is the obvious
winner. It's got twice the flash for next to nothing more money. 1-25 piec
Hi
I just realized the "buy direct" button on that page requires a login. The
single piece direct price is $9.70. First price break is at 25 pieces (to
$8.95).
Bob
On May 25, 2013, at 8:56 PM, Bob Camp wrote:
> Hi
>
> It's one of the Freescale K60's they have them in several speeds and
> p
Hi
It's one of the Freescale K60's they have them in several speeds and packages.
Others have similar parts.
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=K60_120&nodeId=01624698C9DE2DDDAF&tab=Buy_Parametric_Tab&fromSearch=false
hopefully shows the family information
The first
On 5/25/2013 3:40 PM, Bob Camp wrote:
You can get a part with 1MB of flash, 128KB of ram, 6 UARTS, 4 16 bit A/D's,
10/100 Ethernet, USB, and a bunch of other stuff for less than $10. Drop this
and that, go to half the flash, and yup, the price is 1/2. Comes with a free
toolchain and two very
charles_steinm...@lavabit.com said:
> My question here is more pointed: If one is going to learn a new system
> today for timing and other measurement/control projects, which "empire" is
> likely the best one to choose?
I'd split things into 3 piles.
PIC, AVR and friends are really small. Sc
On Sat, 25 May 2013 23:42:19 +0200
Attila Kinali wrote:
> Last but not least: There is an advantage in using more popular
> chips (AVR, Arm Cortex-M). You will find more knowhow and help on the
> net for the toolchain or other problems. You will find more ready made
> libraries and code collectio
On Sat, 25 May 2013 16:09:11 -0400
"Charles P. Steinmetz" wrote:
> On another thread, Bob wrote:
>
> >If the objective is to complete a very simple, low powered project
> >and be done with it, go with the Arduino. If the objective is to
> >learn an empire, be very careful about which empire yo
Hi
As I've mentioned before, the ARM parts are getting to be pretty pervasive. The
toolchains are quite good. The peripherals are extensive and they seem to work
well. I have a preference for the Freescale versions, but there are a *lot* of
people out there making them. They similarities betwee
On another thread, Bob wrote:
If the objective is to complete a very simple, low powered project
and be done with it, go with the Arduino. If the objective is to
learn an empire, be very careful about which empire you pick. The
ARM boys are quickly gobbling up a lot of territory that once was
24 matches
Mail list logo
