On 22 December 2010 15:11, John Thornton wrote:
> I'm reading up on bit banging now.
I am almost surprised that there isn't already an SPI bit-banging comp
for EMC2. As long as the components are flexible in their timing then
shifting one bit per base thread ought to be pretty easy.
I did some
Jonathan,
I'm so new at this kind of stuff you might have to beat me over the head
till I understand :)
Ok the Arduino Uno and a couple of Max6675's . Would I need a mini
breadboard and some jumpers to test out with? Hmm, and some kind of
board for the Max6675's
http://www.sparkfun.com/produc
Once again, the arduino can be used to interface with several spi devices (I
usually just use software bit banging for something low speed like this). It
can also be used for your digital IO needs. It is also very easy to
interface with the arduino because they have a USB to serial chip. Like
this:
I think I found something on sparkfun that fits the bill sorta
http://www.chinwah-engineering.com/USBThermocoupleProject.html
Do you guys think this could be hacked to have two Max6675's going to
the FT23R?
Thanks
John
Dave wrote:
> Wow. That SPI interface is a lot simpler than I thought it w
I'm still trying to digest all the ideas and yes a USB interface would
be the best. I'm not sure if this may be part of the puzzle or not.
http://www.sparkfun.com/products/8165
It does seem to me that a thermocouple amplifier chip would be needed
like the AD594 or the thermocouple to digital con
Wow. That SPI interface is a lot simpler than I thought it would be.
Nice!
But this doesn't address the issue of using a laptop that does not have
a LPT port.
Still it is a slick solution.
Thanks for sharing that.
I would think that JT would want to use a newer laptop for this app -
which
On Tue, 2010-12-21 at 11:36 -0600, Jon Elson wrote:
> Kirk Wallace wrote:
> > On Tue, 2010-12-21 at 06:21 -0700, Jonathan George wrote:
> >
> >>
> >> Ok, so my whole point was that in my opinion the best device for
> >> digitizing a thermocouples milli-volt signal is the MAX6675 IC. Thi
Kirk Wallace wrote:
> On Tue, 2010-12-21 at 06:21 -0700, Jonathan George wrote:
>
>>
>> Ok, so my whole point was that in my opinion the best device for
>> digitizing a thermocouples milli-volt signal is the MAX6675 IC. This
>> device is great because all you have to do is hook the ther
On Tue, 2010-12-21 at 06:21 -0700, Jonathan George wrote:
>
> Ok, so my whole point was that in my opinion the best device for
> digitizing a thermocouples milli-volt signal is the MAX6675 IC. This
> device is great because all you have to do is hook the thermocouple up
> to it and read th
On Mon, 2010-12-20 at 16:33 -0600, John Thornton wrote:
... snip
> One recipe might look like this
> Cabinet temperature 120F, Circulation Fan On, Vent 100% open time 1:45
> add smoke generator heat time 0:20
> close vent to 50%
> ramp cabinet temperature from 120F to 145F over a 2 hour period
> sm
Michael,
Thanks I think that is what I was looking for. I actually have some
one-wire stuff but it was too old and not the right shape.
John
Michael Haberler wrote:
> Am 19.12.2010 um 21:05 schrieb Kirk Wallace:
>
>
>> need to get the temperature information in. You would need an analog
>>
Better yet, just the the relay ladder logic in EMC2 to do the sequencing.
On 12/19/2010 3:31 PM, Kirk Wallace wrote:
> On Sun, 2010-12-19 at 21:16 +0100, Michael Haberler wrote:
> ... snip
>
>> simpler solution: use a one-wire sensor and 1-wire USB bus adapter
>> in linux use owfs (see owfs.or
On Sun, 2010-12-19 at 21:16 +0100, Michael Haberler wrote:
... snip
> simpler solution: use a one-wire sensor and 1-wire USB bus adapter
> in linux use owfs (see owfs.org)
> then read temperatures from the file system
> done
>
>
> alix:~# cat /mnt/1wire/bus.0/28.6B8F5B01/temperature
> 15
Am 19.12.2010 um 21:05 schrieb Kirk Wallace:
> need to get the temperature information in. You would need an analog
> input. Since you don't really need real-time, you might be able to use
> USB and this USB datalogger I found last week:
> http://www.sparkfun.com/products/9147
> http://www.walla
On Sun, 2010-12-19 at 12:41 -0600, John Thornton wrote:
> On the PC side of the control would be the smarts to control
> temperatures and have various recipes for different temperature profiles.
>
> These scenarios are common when smoking
>
> Control the cabinet temperature only.
> Control the c
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