[VicPiMakers Projects] Projects Digest, Vol 6, Issue 5

Fri Dec 18 12:28:49 EST 2020

Michelle, your perspective is really interesting.

For me, it's about the creative process, and learning about technology.  With a bunch of parts and wires, I made a weather station that shows temperature, relative humidity and barometric pressure.  Learning how to make the pixels on a screen go a certain way, writing the program to capture the data and save it or send it somewhere, connecting wires to make something happen.   Knowing you did it all yourself.  I don't think it's any different than any other creative endeavour.  We do it because we find it fun.  Why does a chef cook?  I don't understand how that can be fun but we all have different things that float our boats.

Happy Friday :)

Lynn

________________________________
From: Projects <projects-bounces at vicpimakers.ca> on behalf of George Bowden <gtbowdeng at gmail.com>
Sent: December 17, 2020 9:35 PM
To: Talk about Raspberry Pi / embeded projects
Subject: Re: [VicPiMakers Projects] Projects Digest, Vol 6, Issue 5

Can someone help me out here.  Maybe it is not as interesting as I thought.  Basically, I learned how to deep sleep a battery powered ESP32.  The turkey was unimportant.  A very portable device that reports humidity (a cause of mold, for instance, or of hugely expensive water leaks in a condo) and temperature (for cooking, etc) should be in everybody's house, IMHO.  The turkey stuffed with micros was a bit of a joke.

Deid, I like the bead thermistor more than DS18B20s because, waterproofed,  I can insert it deep into the turkey breast,  for just the right safe temperature without overcooking.  Besides, I've got 40 thermistors left <haha>.  They worked fine when powered by 3.3v and not a GPIO pin.  I suppose I could spare 0.15ma (3v / 20k ohm) continuous drain on the 2600 ma-hour battery.

On Thu, Dec 17, 2020 at 5:26 PM Michelle Wiboltt <michellewiboltt at outlook.com<mailto:michellewiboltt at outlook.com>> wrote:
Ok. Why? What do u find interesting about this? I’m not being mean or silly I’m really trying to understand, through ur eyes, what’s interesting about this? I don’t get it and if I can decipher maybe I can translate for people like me:) and maybe, just maybe one of them has the caramels secrets:)
New worlds 🌎

Michelle Wiboltt
www.elb1b69.net<http://www.elb1b69.net>
604-612-2505

________________________________
From: Projects <projects-bounces at vicpimakers.ca<mailto:projects-bounces at vicpimakers.ca>> on behalf of George Bowden <gtbowdeng at gmail.com<mailto:gtbowdeng at gmail.com>>
Sent: Thursday, December 17, 2020 5:17:32 PM
To: Talk about Raspberry Pi / embeded projects <projects at vicpimakers.ca<mailto:projects at vicpimakers.ca>>
Subject: Re: [VicPiMakers Projects] Projects Digest, Vol 6, Issue 5

A couple of corrections... multiplying  a minute of microseconds requires the microseconds to be declared as 60000000ULL   yes, thats ULL at the end, Unsigned Long Long.  I found this error when I went above 20 minutes sleep.
Also , concatenation of strings in php is with the period, not the plus sign.  I should put all this on github so that my corrections are available.

Michelle, I am defrosting a turkey slowly inside a closed ice chest on my balcony.  I have a temperature sensor on the turkey that warns me when it has risen to 3 degrees Celsius, meaning it is thawed and time to cook it.  I'm not heating it in the ice chest... ambient daytime warmth just seeps in slowly through the walls of the ice chest to melt the turkey slowly.  The turkey is cooking in the kitchen now.

On Thu, Dec 17, 2020 at 3:02 PM Michelle Wiboltt <michellewiboltt at outlook.com<mailto:michellewiboltt at outlook.com>> wrote:

I don’t get what you’re trying to do?

So, you’ve got a frozen turkey outside with some kind of heater thing stuck on top of the turkey but the turkey won’t stay awake? What? What needs to stay awake? A dead thing?

Or, is this some weird kind of code because I just can’t make sense of it☹ it’s creepy sounding, actually.

m

From: Projects <projects-bounces at vicpimakers.ca<mailto:projects-bounces at vicpimakers.ca>> on behalf of Deid Reimer <deid at drsol.com<mailto:deid at drsol.com>>
Reply-To: Talk about Raspberry Pi / embeded projects <projects at vicpimakers.ca<mailto:projects at vicpimakers.ca>>
Date: Thursday, December 17, 2020 at 2:55 PM
To: "projects at vicpimakers.ca<mailto:projects at vicpimakers.ca>" <projects at vicpimakers.ca<mailto:projects at vicpimakers.ca>>
Subject: Re: [VicPiMakers Projects] Projects Digest, Vol 6, Issue 5

Hey George you need to start using DS18B20s to measure temperature.

Deid

VA7REI

On Dec 17, 2020, at 12:00 PM, projects-request at vicpimakers.ca<mailto:projects-request at vicpimakers.ca> wrote:

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Today's Topics:

   1. Code for turkey stuffed with microprocessor. (George Bowden)

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Message: 1
Date: Wed, 16 Dec 2020 19:10:59 -0800
From: George Bowden <gtbowdeng at gmail.com<mailto:gtbowdeng at gmail.com>>
To: "Talk about Raspberry Pi / embeded projects"
 <projects at vicpimakers.ca<mailto:projects at vicpimakers.ca>>
Subject: [VicPiMakers Projects] Code for turkey stuffed with
 microprocessor.
Message-ID:
 <CAMon6WtuHHDwC_x=dcDe9vB6YmxR-j+dQ8P0zfcRiZxR+_gYiQ at mail.gmail.com<mailto:dcDe9vB6YmxR-j%2BdQ8P0zfcRiZxR%2B_gYiQ at mail.gmail.com>>
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Per Lynne's request to see the code, here it is

Every few minutes, the microprocessor measures the temperature inside the
turkey bag, posts the temperature to a website, and goes into deep sleep on
top of the turkey.  (I was going to stuff the micro inside, but that is all
frozen up tight)..

Because the micro is only awake for a few seconds every 20 minutes, it will
run for weeks off the battery, long after the turkey has thawed.

The website receiving the post just appends the current local time() and
data from the micro processor (humidity, temperature, ADC value) to a log
file. The website replies to the micro with the number of minutes that the
micro should sleep.  No jason, no mqtt, just php and html.  Webpage file is
attached.. "fromdht.php"

Here is a snippet of the temperature log

1608169225 90.50 2.50 2704
1608170427 90.70 2.50 2704
1608171628 90.80 2.50 2703
1608172830 91.00 2.50 2644

The ADC reading is broken... I thought I could use a GPIO as the
source voltage for the thermistor, so that I could turn it off when
not needed, but it doesn't work yet.   Maybe need the gpio pin to turn
on a mosfet to 3.3volts

The Arduino .ino code file is also attached

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