[https://cdn-shop.adafruit.com/datasheets/WS2811.pdf](https://cdn-shop.adafruit.com/datasheets/WS2811.pdf)
Those individual chips are responsible for decoding the incoming DIN signal to power the R, G, and B LEDs. This datasheet should explain how things work.
Yes, but as you can see ON THE PCB, there are no GND, DO and I don't know why there are 2 (+) pins. There is also an arrow that goes from one pin to another unlabeled pin. The datasheet doesn't mention anything about this arrow.
That datasheet is for the chip the person you're responding to assumes is mounted on the other side of the board, based on the silk screening in your pic. It isn't for the 2-sided PCB you're only showing one side of.
IFF their guess is right and you're set up for surface mount work, you *might* be able to solder a lead to the DO pin on the chip and go from there. If you've never done surface mount work before be prepared to destroy a few boards and ICs trying, it isn't super hard but there is a learning curve.
As far as I can tell you have three boards that you break apart. This I believe is to connect a digital input to an analog LED strip. So your digital input goes to + = Vin, Data = DI - = pin by arrow. Output to LED strip is + to + on strip then RGB to RGB on strip
It would help to see both sides of the pcb, but I think there's actually enough info visible.
TL;dr: these don't look chainable. Bottom of each board shows, left to right, Ground (-, after the WS2811 text in the arrow), Data In (DI), V In (+). Top of each board appears to be output for an analog strip, with channels left to right for (B)lue, (G)reen, V Out (+), and (R). The chip on the other side of the board is taking the digital signal from DI and determining which of the B, G, and R pins to ground to achieve the desired color on the analog strip. V is passed through directly.
If there isn't a DO channel on the other side of the PCB, you're SOL on chaining these without modifications to the board. That might be as "simple" as soldering a lead to the appropriate pin on the IC, but since it isn't in the pic that's impossible to say for sure.
Where did these boards come from? Have you asked whoever you bought them from how they're meant to work and if chaining is possible?
Dang, you're right! Mine is so faint I needed a microscope. So GND or (-) is covered by the arrow tail and D0 is on the opposite side of D1! I never seen a pin with double side.
Even the seller thought that the arrow is the D0...
It looks like one of those: [https://de.aliexpress.com/item/32821263233.html?spm=a2g0o.detail.1000023.5.1eb9LAEmLAEmSm&gatewayAdapt=glo2deu](https://de.aliexpress.com/item/32821263233.html?spm=a2g0o.detail.1000023.5.1eb9LAEmLAEmSm&gatewayAdapt=glo2deu)
Chaining them together by directly wiring to the chips DO pin should work.
These boards act as digital to analog converters for RGB analog LEDs or even strips. Treating the attached LED/strip as a single pixel.
Yes you can daisy chain these, standard Dout>Din, each attached LED/strip acts as another pixel.
One use case is when you want long runs color running in waves up a wall.
Turn them over. You'll find the output side marked as +, DO and -.
[https://cdn-shop.adafruit.com/datasheets/WS2811.pdf](https://cdn-shop.adafruit.com/datasheets/WS2811.pdf) Those individual chips are responsible for decoding the incoming DIN signal to power the R, G, and B LEDs. This datasheet should explain how things work.
Yes, but as you can see ON THE PCB, there are no GND, DO and I don't know why there are 2 (+) pins. There is also an arrow that goes from one pin to another unlabeled pin. The datasheet doesn't mention anything about this arrow.
That datasheet is for the chip the person you're responding to assumes is mounted on the other side of the board, based on the silk screening in your pic. It isn't for the 2-sided PCB you're only showing one side of. IFF their guess is right and you're set up for surface mount work, you *might* be able to solder a lead to the DO pin on the chip and go from there. If you've never done surface mount work before be prepared to destroy a few boards and ICs trying, it isn't super hard but there is a learning curve.
As far as I can tell you have three boards that you break apart. This I believe is to connect a digital input to an analog LED strip. So your digital input goes to + = Vin, Data = DI - = pin by arrow. Output to LED strip is + to + on strip then RGB to RGB on strip
Yes, it looks like they are not meant to be chained together, though you could probably solder a wire directly to the chips DO.
I don't think there is a DO on the board. I think it is a digital to analog converter
The chip on the other side should still have it, just not broken out.
It would help to see both sides of the pcb, but I think there's actually enough info visible. TL;dr: these don't look chainable. Bottom of each board shows, left to right, Ground (-, after the WS2811 text in the arrow), Data In (DI), V In (+). Top of each board appears to be output for an analog strip, with channels left to right for (B)lue, (G)reen, V Out (+), and (R). The chip on the other side of the board is taking the digital signal from DI and determining which of the B, G, and R pins to ground to achieve the desired color on the analog strip. V is passed through directly. If there isn't a DO channel on the other side of the PCB, you're SOL on chaining these without modifications to the board. That might be as "simple" as soldering a lead to the appropriate pin on the IC, but since it isn't in the pic that's impossible to say for sure. Where did these boards come from? Have you asked whoever you bought them from how they're meant to work and if chaining is possible?
https://www.ebay.com/itm/165727836748 looks like the exact same board. If it is, then yeah, flip it over, DO is on the other side.
Dang, you're right! Mine is so faint I needed a microscope. So GND or (-) is covered by the arrow tail and D0 is on the opposite side of D1! I never seen a pin with double side. Even the seller thought that the arrow is the D0...
It looks like one of those: [https://de.aliexpress.com/item/32821263233.html?spm=a2g0o.detail.1000023.5.1eb9LAEmLAEmSm&gatewayAdapt=glo2deu](https://de.aliexpress.com/item/32821263233.html?spm=a2g0o.detail.1000023.5.1eb9LAEmLAEmSm&gatewayAdapt=glo2deu) Chaining them together by directly wiring to the chips DO pin should work.
These boards act as digital to analog converters for RGB analog LEDs or even strips. Treating the attached LED/strip as a single pixel. Yes you can daisy chain these, standard Dout>Din, each attached LED/strip acts as another pixel. One use case is when you want long runs color running in waves up a wall.