NeoPixels/WS2812B : One wire RGB wonders
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- Опубликовано: 11 сен 2024
- NeoPixel may well be the Adafruit trademark name for these WS2812 modules but it sure is catchy.
I am using the Adafruit NeoPixel Library - learn.adafruit...
100 x WS2812 - www.aliexpress....
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Awesome video with great demonstrations! Those WS2812B thingys really simplify the wiring when project needs multiple RGB leds.
Must be that time of year. My first thought is that those would make for an brilliant Christmas tree illumination.
Great job! Nice LEDs. Thanks for sharing!
can you help me, why doesn't this LED light up when I connect it directly to power (3V-5V)? unlike the strip version that I can usually check directly using a 3v battery and lights up, and it happens to all the individual LEDs that I have.
Great video! I believe they're WS2812B chips, because they look to only have 4 pads on them, instead of 6, but I'd have to go look at the datasheet to be sure. If you're doing a long sting of them, it helps to supply your +5v and Gnd connections further down the line (or again down the line) to ensure the last in the chain is as bright as the first.
I've daisy chained about 25 of these to make a 5x5 grid for a project and didn't have any issue with dimming toward the end, but apparently it can happen on longer runs.
+thegreatmoa You are indeed right, WS2812b. I should have been more careful, it even says that on the product page :-)
+David Watts I mostly mentioned it because the first ones I ordered were of the six pin variety, and I ordered them without the nice pcb attached, and had to solder the 6 pins by hand. It was a lesson in patience, if nothing else!
+thegreatmoa This is the package name, the IC is the WS2811 ;-)
+norm1124 Awesome, thanks norm! Always a challenge keeping all this stuff straight, hehe
I had a question about those specific Neopixel LEDs - when they're still attached in a row are they electrically connected as a unit, or are they attached by substrate only and you'd have to solder wires between them to connect them?
+Steve Prior The ones I bought are not electrically connected, you can buy strips which are though. You would need to solder these ones together.
That's what I thought, thanks for confirming.
Hi... I would like to know why you have a Capacitor and a Resistor on your breadboard, could you inform me as to the value of both and the reason for these components. Thank you.
It was quite some time ago now, but from the looks of it I would guess button debouncing, nothing to do with the Neopixel.
I used Pin 13 for the communication, it is very nice to debug the communication visually.
+norm1124 That's a really great tip
+David Watts Thanks, first I feared it would not work, but seems fine.
Awesome my friend.
Abrupt ending! =( But cool, I've wondered about these.. never really looked them up.. Now I might go buy some =D
+Chris Fredriksson It was a little abrupt :-) I started rambling and I didn't want the video to go on too long.
+David Watts Well that's part of it, we do want to hear your thoughts and ideas =D Hope to see more! Maybe christmas lights? ;) Keep up the great work!
Chris Fredriksson Thanks mate
I would appreciate it if you did this for ws2813 leds
Using an attiny85 is fun too, you get a very small form factor combined with an USB charger or battery pack: m.instructables.com/id/Use-a-1-ATTiny-to-drive-addressable-RGB-LEDs/?ALLSTEPS
hey man! nice video! which wire gauge should be used if you want to cut the LED's from a strip and connect them together again? Will 22 AWG suffice? I would like to use 300 LED's in total, so total power consumption is 60mAx300=18W at 5V, so I would at least need a 4A power supply.
I think it would actually be 18 Amps not Watts, it would be 90-100W. Have a look at this current rating guide www.engineeringtoolbox.com/wire-gauges-d_419.html of course it depends if you are using a common bus or not.
yeah I made a mistake with the numbers haha. Should be Amps. thanks for the info and quick reply :)
I would like to use the LED's to make a 12x12 LED matrix. so connected in series I guess, or is it better to connect in parallel?
I would run a could of bus bars then 22 AWG for each for each of the 12 LEDS.
what is a bus bar?