please dont rip this site

NEW201507.TXT

 

ON 20150702@2:14:01 AM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/microchip/language/c/io/lcd/hitachilcd-cl/lcd_h.htm#
(anonymous user) I have agreed to maintain this page.



ON 20150702@9:57:06 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/gardens.htm#42187.4146412037
James Newton[JMN-EFP-786] See also:
http://growfood.com/shop/the-mittleider-gardening-course/
Very well regarded gardening system with exact instructions. Follow to the letter for best results.



ON 20150703@5:14:45 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42188.7185648148
James Newton[JMN-EFP-786] See also:
https://bonobogitserver.com/
FOSS GIT server for Windows.



ON 20150705@12:24:26 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.5169675926
James Newton[JMN-EFP-786] Says

Modern, feature rich version control is supplied by programs like GIT<a href="https://git-scm.com/">^</a> or SourceGear Vault<a href="http://sourcegear.com/">^</a>, and is rapidly becoming an expected feature in online content storage systems like <a href="http://www.drobbox.com">drobbox.com</a> and <a href="http://drive.google.com">Google Drive</a>. Even <a href="http://www.Wikipedia.com">Wikipedia.com</a> maintains a list of past versions of each article.



ON 20150705@12:26:23 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.5183217593
James Newton[JMN-EFP-786] Says

Version Control is most critical in programming where it allows developers to understand the history of a piece of code, to branch out in new directions without fear of loosing their way (because they can always go back), and to more easily find new bugs by looking at what changed in the code when the bug first appeared.



ON 20150705@12:52:49 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.5366782407
James Newton[JMN-EFP-786] Says

Choosing when to save (or "commit") changes can be automated or manual depending on the system. Some will save regularly based on time, or how much has changed, or save when there haven't been any changes for a while. Most programmers choose to save manually, when it makes sense for them. The advantage of manual commits is that each can represent a logical point in the development of the project. For example, you wouldn't want to commit after making a change that causes other parts of the code to fail, instead waiting until all the changes required to add a feature or fix a bug have been complete. On the other hand, if the changes are extensive, and will require a lot of work, you might want to commit after you change each part of the code. When to commit is a judgement call, up to the programmer.



ON 20150705@1:03:09 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.5438541667
James Newton[JMN-EFP-786] Says

Changes can be tracked individually for each file, or across multiple files in a project (called a "repository" in GIT). Multi-file tracking is important for work where the files are interrelated as they are in programming.



ON 20150705@1:36:08 PM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/intel/32bit/32bitx86tips.htm#42189.4297222222
James Newton[JMN-EFP-786] published post 42189.4297222222

   <LI>'



ON 20150705@1:39:38 PM at page:
On a web page you were interested in at:
http://www.massmind.org/Techref/io/stepper/THB6064/index.htm#42188.7870833333
James Newton[JMN-EFP-786] removed post 42188.7870833333

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ON 20150705@1:40:01 PM at page:
On a web page you were interested in at:
http://www.massmind.org/Techref/io/stepper/THB6064/index.htm#42188.7875810185
James Newton[JMN-EFP-786] removed post 42188.7875810185

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ON 20150705@4:34:52 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.6908796296
James Newton[JMN-EFP-786] Says

With GIT, you can see a simple list of the past changes to a repository with the command:
<BR><TT>git log</TT>
<BR>which will display a list of unique commit ID's along with the data, author and comment about the entry.



ON 20150705@4:39:40 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#42190.694212963
James Newton[JMN-EFP-786] Says

To view the differences between two commit ID's use the command:
<BR><TT>git diff <i>commitID</i> <i>commitID</i>
<BR>This will list each file that has changed, and the differences between the files in <a href="UNIXs.htm">diff</a> -c format.



ON 20150705@4:40:07 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
http://techref.massmind.org/techref/diff.asp?url=\Techref\method\versioncontrol.htm&version=7



ON 20150705@4:45:11 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/versioncontrol.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
http://techref.massmind.org/techref/diff.asp?url=\Techref\method\versioncontrol.htm&version=8



ON 20150705@11:33:55 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/esp-8266.htm#42190.9818865741
James Newton[JMN-EFP-786] See also:
http://hackaday.com/2015/06/06/esp8266-as-a-networked-mp3-decoder/




ON 20150711@8:01:34 PM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/microchip/aout.htm#42196.60125
(anonymous user) Published and replied to post 42196.60125 by m.deeb

|Insert 'For current mode, increasing the power supply voltage will increase the maximum workable load resistance. At full output 20mA through 600 Ohms will drop 12V, add 2V drop across the 100R and nearly 1V across the 47R, add another at least 2V headroom for the Op Amp = 17V supply might just do it. If really required you could reduce the current sensing resistor value and increase the gain in the feedback Op Amp stage, eg. halving resistance from 100R to 50R and doubling feedback gain would reduce the 2V drop to 1V. For "stability" see notes on adding capacitance.

For voltage mode, a PNP transistor could be added to the output Op Amp to boost current. The minimum workable load resistance will still be limited by the available supply voltage and voltage drop across the series resistors, as per Ohms law.

' at: '<!-- 42196.60125 EOR --><A style="color:#AF4040" TITLE="Click to login and reply" REL="nofollow" HREF="/techref/login/default.asp?req=/techref/update.asp%3Fact=reply%26url=/Techref/new201507.txt%26id=42196.60125">+</A>'' but after: '<A TITLE="'.

ON 20150713@8:56:53 AM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/io/lcd/4b16x2lcd-ab.htm#42197.4322916667
James Newton[JMN-EFP-786] published post 42197.4322916667<P><!-- 42196.60125 EOR --><A style="color:#AF4040" TITLE="Click to login and reply" REL="nofollow" HREF="/techref/login/default.asp?req=/techref/update.asp%3Fact=reply%26url=/Techref/new201507.txt%26id=42196.60125">+</A>
</UL>'



ON 20150716@10:30:15 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/pond/tilapia/monogenetic_trematodes.htm#42201.437662037
James Newton[JMN-EFP-786] See also:
https://goo.gl/photos/R7c7hJJKMeigQeYR8
Aparent Trematode found on Tilapia after change using water that had come through a water softener. Microscope used was a cardboard Foldscope.



ON 20150717@2:45:42 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/pond/tilapia/salt.htm#42202.6150694444
James Newton[JMN-EFP-786] See also:
http://www.greatlakestilapia.com/salt-treatment-for-tilapia.html
Short baths in high salt water will dehydrate external parasites, stimulate mucous generation on the fish, and help retain internal salt levels. Non-iodized salt is better as iodine might be toxic to some fish (unproven). Also avoid anti-caking agents. <a href="https://http://www.google.com/search?q=Diamond+Crystal+brand+40+Lbs+Solar+Naturals+Water+Softener+Salt">Diamond Crystal brand 40 Lbs Solar Naturals Water Softener Salt</a> is a good low cost option. Measure by weight to avoid errors caused by course salt rocks. Use water from the main pond to avoid any other differences in chemistry and to keep the same temperature. Never add salt directly; first dissolve the salt in a bucket to make a brine, then add it to the treatment tank / pool. Do not use salt treatments in conjunction with other medicines.
<P>
<table border=1">
<caption><i>Salt levels and treatment times</i></caption>
<TR VALIGN="BOTTOM"><TH>Duration</TH><TH>Percentage</TH><TH>Salt Lb per<BR> 10Gal Water</TH><TH>Disease / Issue</TH></TR>
<TR><TD>30-60 seconds</TD><TD>3%</TD><TD>2.5 lb</TD><TD>exterior parasites</TD></TR>
<TR><TD>30-60 minutes</TD><TD>1.2%</TD><TD>1 lb</TD><TD>Thin mucous layer</TD></TR>
<TR><TD>days</TD><TD>0.18%</TD><TD>0.25 lb (4oz)</TD><TD>Nitrite toxicity</TD></TR>
<TR><TD>indefinent </TD><TD>0.18%</TD><TD>0.15 lb (2.4oz)</TD><TD>Ongoing issues</TD></TR>
</TABLE>




ON 20150719@11:23:07 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/robogarden.htm#42204.4743865741
James Newton[JMN-EFP-786] See also:
https://hackaday.io/project/4197-reagent-robot
Automate the Reagent (take a sample, put a drop of stuff in, shake, look at the color) testing of water for Aquaponics, Ponds, Aquariums. Currently, the electronic sensors for those test are very expensive and require frequent replacement.



ON 20150719@11:24:37 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/robogarden.htm#42204.4754282407
James Newton[JMN-EFP-786] See also:
https://prezi.com/tmboc-s_lhc0/how-i-learned-to-love-saving-water/?utm_campaign=share&utm_medium=copy
Saving water through several low tech and high tech methods.



ON 20150720@9:47:16 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/member/plp-actcom-f00/sun-turbo-1.htm#42205.4078125
James Newton[JMN-EFP-786] See also:
http://ec.europa.eu/research/energy/pdf/solgate_en.pdf
Detailed research paper on construction of a test system by the EU solgate group in Seville



ON 20150721@1:47:40 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/newtons/ps01/ps01_009.htm#42206.5747685185
James Newton[JMN-EFP-786] Says
/Techref/other/newtons/ps01/ps01_009_MagicCrystal.htm
Roy Newton's Magic Crystal Prank



ON 20150721@1:53:51 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/newtons/ps01/ps01_009_MagicCrystal.htm#42206.5790625
James Newton[JMN-EFP-786] Questions:

<b>By G.E.N. 2015-07-18</b>
<P>
<i>Editors note: A name has been changed in order to protect the guilty</i>
<P>
One of my friends at Big Rapids High School was Bob ------, who was two years older than I but I knew because we both played in the band – me on trumpet and Bob on baritone horn. Bob liked to include me on some of his projects, which were imaginative but not very practical. He had, for example, decided that we should start our own marching band; that one was squelched when he asked Aldie Long. The high school band director, if we could use some of the high school equipment, and Aldie told him that he runs all the marching bands in this town. I stood silently in the background during their discussion.
<P>
My older brother David, who still lived at home in the early ‘60’s, had wired a silent sound switch into our television so that if we needed to quickly shut off the sound, such as when a phone call came in, we could do it without having to walk over to the television. The switch was mounted on a small board at the right-hand side of Dave’s chair, in a spot not visible from most of the room.
<P>
Dad had acquired a large quartz crystal – cloudy but uncolored and perhaps 4 inches by ¾ inch by an inch. Bob was fascinated by it.
<P>
Something gave Dad the idea of pulling a trick on Bob. The next time Bob came over, he showed Bob the crystal and said that it had magic powers. As Bob and Dad and I stood in the living room while Dave sat in his chair, Dad told Bob that if he pointed the crystal at the television, he could shut off the sound. He made quite a show of pointing it just so, and when it was aimed exactly at the right spot, the sound went off! Dad pointed the crystal at the set again, and the sound went back on. Bob was amazed! He asked Dad to repeat it, and the second demonstration went just like the first. 
<P>
Bob got up his nerve to ask, “Could I try it?” Dad handed Bob the stone, Bob pointed it at the television, … and nothing happened. Bob didn’t know what to think. Dad explained that it usually doesn’t work on the first try, but one could learn to do it with practice. He encouraged Bob to try again.
<P>
This time, when Bob pointed the crystal at the television, after a couple of seconds of delay, the sound went off! Bob pointed it again, and the sound came back on. Clearly he’d gotten the hang of it now.
<P>
Then Dad took the deception a bit farther. He told Bob that you don’t have to point directly at the set to turn the sound off and on. He explained that the beam from the crystal could ricochet off certain objects and still be effective if it hit the television. “Now,” he told Bob, “I’m going to ricochet the beam off the front window to the television set.” He pointed the crystal at the window between the porch and the living room, and the sound again went off. Bob’s face showed his amazement.
<P>
After turning the sound back on with a direct hit, Dad upped the ante even further. “This time, I’m going to bounce the beam off the mirror, then to the kitchen window, around through the dining room, off the dining room window, and over to the television. This is a difficult one, and since it’s a greater distance, the beam might take longer to arrive.”
<P>
I stood quiet. Dave, sitting in his chair with his right arm draped over the side to the board with the switch, had a big smile on his face, which Bob couldn’t see.
<P>
Dad got ready, made a preliminary check of the angles, and carefully lowered the crystal into place to begin its first bounce. One second elapsed, then two, and finally the television sound went off! Bob’s jaw dropped open.
<P>
By now, Dave’s shoulders were shaking with laughter.
<P>
Bob asked if he could try it, but he just couldn’t get the angles right to turn the sound off by bouncing the beam. Dad consoled him, explaining that he’d had to practice a lot to master those ricochet shots.
<P>
Bob left that afternoon full of the wonder with what he’d just witnessed. I figured on telling him how we did it the next time he came over, and that would be the end of it.
<P>
However, the next time Bob came over, he informed us that he had told Mr. Payne, his physics teacher, about the magic crystal. Mr. Payne had assured him that what he described was impossible and there must be some trickery involved. Now that the jig was up, we showed him the sound switch, and he immediately understood how we did it. I felt guilty for taking advantage of Bob’s gullibility, leading to what was probably an embarrassing moment for him. He was irritated at all of us for fooling him, but he got over it in a few days.
<P>




ON 20150721@1:56:53 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/newtons/ps01/ps01_009_MagicCrystal.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
http://techref.massmind.org/techref/diff.asp?url=\Techref\other\newtons\ps01\ps01_009_MagicCrystal.htm&version=1



ON 20150721@1:58:03 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/newtons/ps01/ps01_001.htm#42206.5819791667
James Newton[JMN-EFP-786] Says
/Techref/other/newtons/ps01/ps01_009_MagicCrystal.htm
Roy Newton's Magic Crystal Prank



ON 20150721@1:59:16 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/newtons/ps01/ps01_072.htm#42206.5828240741
James Newton[JMN-EFP-786] Says
/Techref/other/newtons/ps01/ps01_009_MagicCrystal.htm
Roy Newton's Magic Crystal Prank



ON 20150724@8:44:48 AM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/pcbs.htm#42199.2952083333
James Newton[JMN-EFP-786] removed post 42199.2952083333

|Delete '

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ON 20150724@8:47:24 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/io/stepper/wires.htm#42204.4317361111
James Newton[JMN-EFP-786] Published and replied to post 42204.4317361111 by supertechster

|Insert 'I would add another stepper motor driver, run from the same step and direction signals, and wire the motor to the driver so it runs backwards.' at: '<!-- 42204.4317361111 EOR --><A style="color:#AF4040" TITLE="Click to login and reply" REL="nofollow" HREF="/techref/login/default.asp?req=/techref/update.asp%3Fact=reply%26url=/Techref/new201507.txt%26id=42204.4317361111">+</A>'' but after: '<A TITLE="'.



ON 20150726@2:14:46 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/ai/logisticregresions.htm#42211.5935416667
James Newton[JMN-EFP-786] See also:
http://www.stat.cmu.edu/~cshalizi/uADA/12/lectures/ch12.pdf
Carnegie Melon University Statistics Class



ON 20150726@2:18:51 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/ai/logisticregresions.htm#42211.5964236111
James Newton[JMN-EFP-786] Says

We can combine the two cases (y=0 or y=1) into one equation by multiplying one side by y and the other side by 1-y; which ever term is unwanted, will be multiplied by zero and drop out.



ON 20150726@2:36:05 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/ai/logisticregresions.htm#42211.6083912037
James Newton[JMN-EFP-786] Says

As with the MSE in Linear Regression, the Sigmoid function has a very simple derivative (it's quite difficult to take the derivative of it, but once you do, the result is a very simple equation) which makes it easy to calculate the slope of the error. This makes the gradient descent quick. 
<P>
<strike>O</strike><sub>j</sub> := <strike>O</strike><sub>j</sub> - a * sum i=1 to m ( h<sub><strike>O</strike></sub>(x<sup>(i)</sup> - y<sup>(i)</sup>) * X<sub>j</sub><sup>(i)</sup>
<P>
Keeping in mind that we must simultaniously update all <strike>O</strike>



ON 20150726@2:40:46 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/ai/logisticregresions.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
http://techref.massmind.org/techref/diff.asp?url=\Techref\method\ai\logisticregresions.htm&version=4



ON 20150726@2:47:29 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/method/ai/logisticregresions.htm#42211.6163078704
James Newton[JMN-EFP-786] Says

Feature scaling also helps the gradient descent converge faster.



ON 20150727@9:05:42 AM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/other/gardens.htm#42212.3789467593
James Newton[JMN-EFP-786] See also:
http://www.flairform.com/hints/nutrient_deficiency.htm
Excellent and detailed chart and graphic for diagnosing nutrient deficiencies.



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