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== Summary == | == Summary == | ||
− | + | '''''Note under construction, files not yet posted''''' | |
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− | Futulec http://www.futurlec.com/ | + | Name: PointLess LED Array |
+ | Status: still developing, but is working | ||
+ | Technology: PIC microcontroller with code in BoostC | ||
+ | Author: [[russ_hensel]] ( where you can find an email address to reach me ) | ||
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+ | Futulec http://www.futurlec.com/ sells an 8 by 8 array of 64 LED's in a package about 2 inches square. But what to do with it. Well obviously light it up. That is the basis of this project. What is is good for? still looking for a good reason, but it was fun. | ||
PIC microcontroller with code in BoostC. | PIC microcontroller with code in BoostC. | ||
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== What it Does == | == What it Does == | ||
− | Displays designs on the array, you can spell out messages one character at a time or present little animated designs | + | Displays designs on the array, you can spell out messages one character at a time or present little animated designs. |
== Parts List == | == Parts List == | ||
PIC16F877A, my favorite, but I think it is time to move to the 18F series, just not quite there yet. | PIC16F877A, my favorite, but I think it is time to move to the 18F series, just not quite there yet. | ||
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LED array I got the array from http://www.futurlec.com/ LEDM88OG. This is a two color array ( 64 leds ) , I used only half of them, may use the rest later. | LED array I got the array from http://www.futurlec.com/ LEDM88OG. This is a two color array ( 64 leds ) , I used only half of them, may use the rest later. | ||
16 small signal transistors – may not be necessary, but allow for larger drive currents | 16 small signal transistors – may not be necessary, but allow for larger drive currents | ||
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3 x 8 current limiting resistors | 3 x 8 current limiting resistors | ||
− | Substituting a couple of IC gets rid of most of these | + | Substituting a couple of IC gets rid of most of these components. ( also from http://www.futurlec.com/ ) |
For better parts list see the schematic. | For better parts list see the schematic. | ||
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The code should be reasonably self explanatory. Send Questions to [[russ_hensel]] To make the circuit board easy to layout I have moved some bit and port positions around, you may have to adjust the software to make it work with these changes | The code should be reasonably self explanatory. Send Questions to [[russ_hensel]] To make the circuit board easy to layout I have moved some bit and port positions around, you may have to adjust the software to make it work with these changes | ||
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== Building your own == | == Building your own == | ||
− | My project was hand wired and I made many mistakes. Despite this the code works and I have had a lot of fun with it. Because I changed my mind on the right components and other details all the pieces might not go together for you without a little bit of jiggling. Some particular | + | My project was hand wired and I made many mistakes. Despite this the code works and I have had a lot of fun with it. Because I changed my mind on the right components and other details all the pieces might not go together for you without a little bit of jiggling. Some particular warnings: |
The circuit board does not show the array, just a ribbon connector. This goes to the array. One side to the columns, in order 1...8 the other to the rows. The ribbon connector is much bigger than needed, change it to a smaller one. | The circuit board does not show the array, just a ribbon connector. This goes to the array. One side to the columns, in order 1...8 the other to the rows. The ribbon connector is much bigger than needed, change it to a smaller one. | ||
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You may have a power supply that makes the on-board regulator unnecessary, but I would leave it in if you are running on batteries ( 9 volt transistor bat for example ). | You may have a power supply that makes the on-board regulator unnecessary, but I would leave it in if you are running on batteries ( 9 volt transistor bat for example ). | ||
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Things I am still working on: | Things I am still working on: | ||
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*Other as time and ideas come to me. | *Other as time and ideas come to me. | ||
*Mistakes here? Please let me [[russ_hensel]] know. | *Mistakes here? Please let me [[russ_hensel]] know. | ||
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