*** HC4LED *** Lives Again!
Brian Riley
Posts: 626
Hey ... anyone remember Bean's famous (infamous???) HC4LED units??? Well, they are back ... at least for a little while
Terry's company is Hitt Consulting which is the "HC" in "HC4LED". They were bought off eBay salvaged from a cable TV set top box. Nobody knew what to do with them and they were sold off by the pound.
The unit has four seven segment LED displays and an SPI chip on board. It requires only a simple SHIFTOUT command with two I/O lines (Data and Clock) and optionally a third line to enable/disable (alternately it can simply be grounded). It became a big hit. Pretty soon there was code for Parallax BS1, BS2, SXB, and Propeller, Picaxe, various PICs (ASM and BAS), AVRs, Arduino, etc. Sparkfun got ahold of some and they began selling them as well is Hitt Consulting.
And then the well ran dry. If you look about the net you will find any number of HC4LED web pages pointing to the "no longer in stock" webpage at Sparkfun as well as the no longer registered www.hc4led.com some of them loudly lamenting the absence of this neat little unit. Well ... lament no more! Terry found a carton with a little under 200 over 250 more of these units. We made a deal and they are now for sale here, while they last.
www.wulfden.org/TheShoppe/HC4LED/index.shtml
I want to spread them around, so no bulk sales. For now I will sell up to three four units per order. The webpage has a link to the newly updated docs and to an open file download directory for every piece of HC4LED code I could get my hands on (BS1/PROP1, BS2, SXB, Propeller, PIC asm and basic, Picaxe, Arduino, etc
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cheers ... brian riley, n1bq, underhill center, vermont
The Shoppe at Wulfden
www.wulfden.org/TheShoppe/
Post Edited (Brian Riley) : 3/19/2010 2:05:13 AM GMT
Terry's company is Hitt Consulting which is the "HC" in "HC4LED". They were bought off eBay salvaged from a cable TV set top box. Nobody knew what to do with them and they were sold off by the pound.
The unit has four seven segment LED displays and an SPI chip on board. It requires only a simple SHIFTOUT command with two I/O lines (Data and Clock) and optionally a third line to enable/disable (alternately it can simply be grounded). It became a big hit. Pretty soon there was code for Parallax BS1, BS2, SXB, and Propeller, Picaxe, various PICs (ASM and BAS), AVRs, Arduino, etc. Sparkfun got ahold of some and they began selling them as well is Hitt Consulting.
And then the well ran dry. If you look about the net you will find any number of HC4LED web pages pointing to the "no longer in stock" webpage at Sparkfun as well as the no longer registered www.hc4led.com some of them loudly lamenting the absence of this neat little unit. Well ... lament no more! Terry found a carton with a little under 200 over 250 more of these units. We made a deal and they are now for sale here, while they last.
www.wulfden.org/TheShoppe/HC4LED/index.shtml
I want to spread them around, so no bulk sales. For now I will sell up to three four units per order. The webpage has a link to the newly updated docs and to an open file download directory for every piece of HC4LED code I could get my hands on (BS1/PROP1, BS2, SXB, Propeller, PIC asm and basic, Picaxe, Arduino, etc
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
cheers ... brian riley, n1bq, underhill center, vermont
The Shoppe at Wulfden
www.wulfden.org/TheShoppe/
Post Edited (Brian Riley) : 3/19/2010 2:05:13 AM GMT
576 x 432 - 179K
Comments
So if you have any more technical questions about them just ask and I'll try to answer them if Brian does know the answer.
The speed requirements are quite low, so even a BS1 or a Prop1 (efx-tek). And only 2 I/O pins are needed.
Good luck selling them Brian.
Bean.
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Use BASIC on the Propeller with the speed of assembly language.
PropBASIC thread http://forums.parallax.com/showthread.php?p=867134
March 2010 Nuts and Volts article·http://www.parallax.com/Portals/0/Downloads/docs/cols/nv/prop/col/nvp5.pdf
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John J. Couture
San Diego Miramar College
The unexpected windfall of 70-80 more units than expected led me to change the limit to 4 units per order.
cheers ... BBR
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cheers ... brian riley, n1bq, underhill center, vermont
The Shoppe at Wulfden
www.wulfden.org/TheShoppe/