ws2815 and nebula
Posted: Fri Oct 02, 2020 1:49 pm
Hi i see that nebula can drive ws2813 and ws2815. it has two data lines and nebula only one, how can i conect? thanks.
Hello alejandro094267,
The second Data wire is the Backup input of these SPI protocols.
It depends on the used LED tape if you can connect the backup input also with the "Data" pin of the NEBULA or not.
Please try to connect the data and backup wire to the "Data" pin of the NEBULA. If everything looks good, you can connect both. But if the LEDs are flicker or a pixel is off, please disconnect the backup wire.
If you have to disconnect the backup wire from the data pin, we recommend to connect it to the "Clock" pin because this pin will be set to ground if a protocol without clock (like WS2813 or 2815) is used and you will get no interference signal from this open wire.
The backup wire must be connected to the "Data" pin of the NEBULA if the first pixel of the used tape is damaged.