A radar sensor at the stairs tracks where each person is. An LED strip along the stairs lights the part next to that person, and the lit part moves with them, up or down.
Use Chrome or Edge on a computer. Phones and other browsers cannot connect to the sensor over USB.
This browser cannot install firmware. Open this page in Chrome or Edge on a computer.
The installer works only over HTTPS. Open this page from its https:// address.
On the sensor's web page, click Set up Follow-Me. The setup wizard asks for the shape of your stairs, has you walk them once, and lines up the LED strip. It takes about ten minutes.
If the Wi-Fi step did not appear, connect your phone to the Apollo MTR1 Hotspot network and enter your Wi-Fi there.
WLED needs some settings changed first. The wizard checks them and can change them for you.