http://forums.leaflabs.com/topic.php?id=2586 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:25:02 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=2586#post-12955 Tue, 28 Aug 2012 12:29:31 +0000 Anonymous 12955@http://forums.leaflabs.com/ <p>Yes, that is the driver code that I am Referring to. I was wondering if anyone has ported it to the Maple platform. it will control this board "http://www.dealextreme.com/p/8x-digital-tube-8x-key-8x-double-color-led-module-81873"</p> <p>The TM1638 Chip will control up to 10, 7 segment LED As well as a 3 x 8 matrix keyboard. and uses a serial Interface.<br /> there is also a version of this chip that will control up to 16, 7 segment LED's.</p> <p>The 4511 chip has been around for many years and I have used it in several projects in the past, but it will only control 1, 7 segment LED, Per chip,And uses a four bit parallel Input, And will not support a keyboard.<br /> I would need 8, chips to control 8, seven segment LEDs. + an additional 11 I/O pins for the keyboard. That would be at least 18 I/O pins. plus I would have to design and build my own circuit board, an additional cost. </p> <p>this Chip uses 2 I/O ports for interface + 1 I/O port "for Chip select" per Chip/circuit board to control everything.</p> <p>There is no comparison between the implementation of the two chips And I do not want to use 40-year-old technology in my project.</p> <p>whereas it might be easier to write the software for that Chip, the hardware requirements and cost, make it impractical.</p> <p>thank you anyway, I appreciate the try. </p> http://forums.leaflabs.com/topic.php?id=2586#post-12953 Tue, 28 Aug 2012 07:28:42 +0000 crenn 12953@http://forums.leaflabs.com/ <p>Look up the 4511 7 segment LED driver, it's a nice easy to use driver however you'd need to design a circuit to use them and also would use more pins that the TM1638 solution.</p> <p>I look at look at this driver: <a href="http://code.google.com/p/tm1638-library/" rel="nofollow">http://code.google.com/p/tm1638-library/</a> and can't see any reason why it wouldn't work, however I'd need to look into more detail. Is this the driver you meant? </p> http://forums.leaflabs.com/topic.php?id=2586#post-12927 Mon, 27 Aug 2012 12:00:24 +0000 Anonymous 12927@http://forums.leaflabs.com/ <p>I am new to the Maple platform. I have some experience with Visual Basic but I have very limited experience with the C language. </p> <p>I have a project which I need to use a Seven segment LED display. I have recently found a suitable display at a reasonable price, it is based on the " Tm1638 " chip. It is a serial display that can be daisychained. It has a 8 digit, "7 segment" display, with 8 bicolor LEDs, and an 8 button keyboard that can detect multiple button combination. The current price is about 8$ US.<br /> The chip by itself is running $1.50 on eBay. Each chip can control a 3 x 8 keyboard matrix, And can be used to drive a 8 x 8 or an 8 x 10 LED matrix.</p> <p>A driver has been created for the Arduino, but will not Compile for the Maple platform. Has anyone Ported this driver to the Maple board.</p> <p>There is a ton of information for the Arduino, including videos. Too much to list here so you'll have to Google it, if you want to know more. </p> <p>I appreciate any help you can give me.</p> <p>Thank you. </p>