avernois

avernois, 1 month ago

This was my desk at lunch time

avernois, 3 months ago

pcb designed and ordered :)
I know the routing is bad, I went fast just to test the idea.
I'll try to do better on the next iteration :) (there is always a second iteration with pcb design :)

#LedClock #pcb

avernois, 3 months ago

Look what I got at the post office. I'll make some soldering/test this evening.
#LedClock #pcb

avernois, 3 months ago

And it works \o/
I'll works on the others once I received the capacitor (it works without, but it's better to have them).
And now that I know this will work, I can invest time of the whole thing :)
#pcb #ws2812b #LedClock

avernois, 3 months ago

Took some time to design and build a thing to help me check and test the pcb when soldered so I can spot problem faster.

#pcb #ws2812b #LedClock

A round (35mm diameter) wooden thing, about 2 cm tall, with a pcb on top of it. On the pcb, 6 5050 leds are lit green. They're the same thing and pcb than the other image.

avernois, 3 months ago

After assembling 2 pcb, I had some doubts.
So I made a prototype case, to have a better idea on how it'll look like. And after some tweaking, I'm reassured. This should end looking nice.
I also gain some idea for the next iteration in the process :)
#LedClock #pcb #LaserCut #ws2812b

video/mp4

avernois, 2 months ago

So I have done some soldering this afternoon.
And it looks nice.

But next time, I'll get a stencil. Applying solder paste by hand was not funny.

#LedClock #pcb #ws2812b

avernois, 2 months ago

Also, yesterday I lasercut some layers to get a better feeling of the clock and try to figure out where I'm going to put the electronic and how I'm going to make it stand.

Usually, all esp8266/ws2812b clocks are using the same pcb. But I think I'm going to design a new one for that clock and try to make it as slim as possible.

#LedClock #pcb #ws2812b #LaserCut

avernois, 2 months ago

And we have a clock!

#LedClock #ws2812b #LaserCut

avernois, 2 months ago

There is still a lot of work to do. That's what the back looks like :)

avernois, 2 months ago

So I designed a new boad for the controller, thinner than the one I usually use.
I'll wait to receive it (hopefully next week) to finish the design of the clock.
In the mean time, I'll probably experiment with the way to display time.
#pcb #LedClock #ws2812b #LaserCut

avernois, 2 months ago

The last components arrived today.
And after for 4 hours of tests, experiments and reading datasheets and obscure forums, I made it works :)
(gipio15 needs to be pulled low, to boot).
I still got some noise on the data line. I'll figure that out tomorrow.

#esp8266 #LedClock #ws2812b #pcb

avernois, 2 months ago

Took me 2 hours, and more tests, experiments and obscure forum but I solve the glitch \o/
It had nothing (almost) to do with the data line. The capacitor on the ldo was just too small (despite being the one suggested on the datasheet).

Next step is to order some bigger smd capacitors, and add the missing resistor to the design and we should be good on that part of the project :)

#esp8266 #LedClock #ws2812b #pcb

avernois, 2 months ago

new version of the pcb designed and ordered.
Now, the wait starts :)

#pcb #LedClock

avernois, 2 months ago

And we're back in business :)
The plan is to replace the electrolityc capacitor with the ceramic I received today in the previous pcb and check it still works fine.
If that's good, I'll have to desolder everything and solder it back on the new version of the pcb.

#pcb #LedClock

avernois, 2 months ago

As I should have expected, things did not really went according to the plan yesterday :)
First I broke the copper pad when desoldering the capacitor making it difficult to test that board with the new ceramic capacitor.
So I did not, and, naively, went directly to solder the new board

Obviously, it did not work. The glitch I thought the capacitor would fix was back. Maybe it was not a capacity problem ?

After few hours of theories, experiments, failures I ended up stacking to capacitors and it works. Maybe it was a capacity problem ?

I guess I'll have to learn how capacitors really works, and the difference between each kind :)
#pcb #LedClock #fail

avernois, 1 month ago

#LedClock #ws2812b

video/mp4

avernois, 4 months ago

I rebuilt the core to get a tighter fit, I'd like to not have to glue anything.
Also, when with clear green acrilyc.
#ChristmasTree #LaserCut

avernois, 4 months ago

Took me 2 hours to assemble the main structure :)
Time to add some LEDs and write some code :)
#ChristmasTree #LaserCut

avernois, 4 months ago

Note that I ended up to use some glue to make my life easier :)

avernois, 4 months ago

First light. It's better than I expected (and the picture does not give it justice)

avernois, 4 months ago

I had way too much fun playing with that platform (while watching christmas movies :).

There is still a lot of work to clean the build and code, but it'll wait next week.

Have fun!
#ChristmasTree #LaserCut #WS2812b

An acrylic structure (around 25 cm tall) that share some resemblance to a Christmas tree. Optical fibers going from the base to the extremity of each "branch" are lit using different patterns and colors.