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Project:USB Disco Dance Floor/v1: Difference between revisions
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Updated project log
(Clarified what I meant by "required pins") |
(Updated project log) |
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;2011-04-12: | ;2011-04-12: | ||
:*I finished soldering the required pins for the first chip's connection to the Arduino, which means that in theory the first five LEDs could be controlled correctly. I just have to wire them in! | :*I finished soldering the required pins for the first chip's connection to the Arduino, which means that in theory the first five LEDs could be controlled correctly. I just have to wire them in! | ||
;2011-04-14: | |||
[[File:DDF-PCB-v1-soldered-top.jpg|thumb|right|Top of PCB prototype, as of 2011-04-14]][[File:DDF-PCB-v1-soldered-bottom.jpg|thumb|right|Bottom of PCB prototype, as of 2011-04-14]] | |||
:*First version of the firmware written, but untested. | |||
:*Bother. After soldering in the connections for the first four LEDs, there was a problem with LED2: no matter what the firmware specified, it would be full-brightness green. It appears to be a problem with the chip itself, so something needed to be done. | |||
:*Ended up soldering the PCB (with help from [[User:Samthetechie|Samthetechie]]) and currently awaiting spare TLC5940s to arrive from TI. I love their "free sample" service! I also plan to redesign the PCB to be smaller and use smaller trace widths, as well as reorganise a couple of components. | |||
;2011-04-15: | |||
:*Redesigned [[Media:DDF-PCB-v0.2-20110415.png|the PCB]] as described above and ordered a prototype from Spirit Circuits again. This board should be more solder-friendly due to thinner traces (smaller thermal area) and copper hints about what goes where. As another new feature, this board has mounting holes set at the corners of a 2.5" square. The board itself is 3.35" by 2.83". With luck, I should be able to fit 12 of these on a 1sqft panel via Spirit Circuits' eBay store, so each PCB would cost in the region of £2. | |||
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== Future directions == | == Future directions == | ||
