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ON 20150101@6:18:28 PM at page:
On a web page you were interested in at:
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ON 20150119@9:06:47 AM at page:
On a web page you were interested in at:
http://www.piclist.org/Techref/io/stepper/SLAm/SLAm_bld.htm#42016.4431481482
James Newton[JMN-EFP-786] Published and replied to post 42016.4431481482 by dcb.home

|Insert 'Not sure why the changes in resistor value would be required. The current values provide almost total shutdown as it is. But those changes probably won't hurt...' at: '<!-- 42016.4431481482 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/new201501.txt%26id=42016.4431481482">+</A>'' but after: '<A TITLE="'.



ON 20150119@9:15:13 AM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/language/pcls.htm#42018.0527199074
James Newton[JMN-EFP-786] Published and replied to post 42018.0527199074 by http://www.barcodelib.com/net_barcode/barcode_symbologies/qrcode.html TARGET=_top

|Insert 'You can draw pretty much anything with PCL. You just need a program that knows what to draw, and which PCL commands to use to draw it with. e.g. you could draw boxes with the rectangle fill command, or draw a bitmap.

There are some barcodes that can be encoded as PCL fonts which basically map the data to a barcode image, but QR is not one of them. Code 128 is, but you still need a program to calculate the checksum and encode the data.' at: '<!-- 42018.0527199074 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/new201501.txt%26id=42018.0527199074">+</A>'' but after: '<A TITLE="'.



ON 20150124@6:03:56 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/io/stepper/THB6064/index.htm#42028.7527314815
James Newton[JMN-EFP-786] Says

<A HREF="http://www.cnczone.com/forums/stepper-motors-drives/251080-cnc-forum-post1631846.html#post1631846">jtrantow says</A> (speaking about his experience with a cheap THB6064AH knock off from China that would only turn one direction if at all) "Notice massmind design uses a 10k pullup in conjunction with the TB6564AH internal pulldown so it won't have this problem. This is an easy fix if you don't mind working with the three surface mount resistors, but I wish I had been aware of the massmind kit. <b>It would have been quicker to build up the kit than debug and repair this board.</b>"




ON 20150130@4:11:16 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/logic/sub5.htm#42034.6744907407
James Newton[JMN-EFP-786] Says

The explanation I found easiest to understand is that of the "additive inverse" or the number you add to something to make it "go away" or rather, to make all but the highest digit zero. This is effectively the negative of the number if you drop the top digit.
<P>
So, the inverse of 25 is 75, because 25+75=100 and you drop the 1. So to subtract 25 from, say, 50, you add 75 instead and get 125, drop the 1, 25 is 50-25. 
<P>
Another example: The inverse of 2 is 8 because 2 and 8 are 10 (drop the 1). So to subtract 2 from 7 for example, just add 7 and 8 which is 15, drop the 1, answer is 5. 
<P>
When we work with a fixed number of digits, dropping the 1 (the overflow) is easy... and only requires a small adjustment to the way we find the inverse. Let's say we will stick to 4 digits always. That makes the inverse of 25 (actually 0025) become 9975. And the inverse of 0002 is 9998. Everything still works, 0050+9975=(1)0025, and 0007+9998=(1)0005. 
<P>
We just have to remember that the normal human convention of not writing leading zeros and always expanding to the left as far as we need, isn't use.



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