1chicagodave wrote:No video yet. Spent all evening soldering up the backpack to the matrix....and these things are hard to light well. Actually photoshopped the pixels a little just to better show the colors. I'll try to get a video up in the next 24 hrs.
...just noticed I put an extra "X" in the "XXII". My Roman numerals suck.
EternalCore wrote:You should add another led matrix and a sound module to make it into a digital Cuckoo Clock. ;P
1chicagodave wrote:EternalCore wrote:You should add another led matrix and a sound module to make it into a digital Cuckoo Clock. ;P
How about a tiny servo swinging the 8-pixel NeoPixel strip (like a pendulum)??
I had been considering a sound module.
I think a larger version may be a good project to try with the Yun! Have it automatically sync with my calendars & appointments. Maybe build the calendar with a large 5 x 7 grid of pixels behind a sheet of frosted acrylic, so I could use dry-erase markers to write on it too.
THAT actually might be a marketable idea... A backlit, automatic, internet-connected "whiteboard calendar" that updates itself, has alert functions, and you can write on it? Hmmm....
Next time I run a 5x7 matrix, I'm either getting one with backpack already connected...or making a custom PCB. I'll post a photo of my wiring job soldering the matrix to the LED backpack. That alone was about 25 tiny wires!
1chicagodave wrote:On the plus side, I did teach myself how to wire-wrap. I ended up wire wrapping all the connections, then securing them with a touch of solder. So much easier/faster than other methods I've used.
But, yes... Nothing beats having your own printed PCB! I was doing that for all my projects.
Actually made them myself, on my stove, using Vinegar & H2O2 after toner-transfer onto the copper-clad. It works amazingly well.
The hardest part for me is drilling the holes. It was nice when I was using that thin/flexible, scissor-cut copper-clad.
I could "drill" out the holes with a thumbtack.
But the flexibility gave rise to issues with larger circuits. Too much stress would cause board to crack/tear or pop solder joints loose.
When I made my tiny LED cube (4x4x4 and only 1 inch cubed!) I ordered a few PCBs from OSHPark. I waited about 3-4 weeks. Delivery confirmation showed that they were finally delivered.... But, I never got them.
So....I'm a little weary to try that again. And, I'm just generally impatient anyway.
I need to buy myself a tiny Dremel drill-press (to drill holes), build a CNC router (to make the entire board), or find a decent hacker-space around here (one which already has those things).
1chicagodave wrote:Those boards look nice. How much $$ each did you pay? (If you don't mind me askin'. )
Great job keeping it local! I just refuse to order custom PCBs from China...no matter how much cheaper it might be.
I was disappointed about my boards. I designed hem to fit my UNO as a shield as everything. A real bummer.
This is what I'm looking at Dremel-wise -
It's ridiculously difficult to drill hole-to-hole through a two sided PCB when the board is thicker than the drill it is wide. (Especially when using a full-size DeWalt drill.) Need something to keep it all straight and steady.
Haha I'm buying that stand/workstation here on my next pay for my battery operated Dremel(the one I linked you). And those Drill-bits I linked you are the perfect size for PCB work.
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