The button on the back of the TRMNL (OG) device can serve many functions, but the most prominent is to force the device to refresh and advance to the next screen in your playlist.

Pressing the button wakes up your device and instructs it to connect to its server to fetch the next screen update.

This button has additional functions outlined in our special functions article.

TRMNL X may be designed as an ambient dashboard device, but that doesn't mean you can't give it a little push (literally!) if you want to advance to the next screen in your playlist.

To get the next image, tap the center of the touchbar on the bottom:

TRMNL X will store recent screens in memory, allowing you to go "back" and "forward" through saved screens, no network request required.

By default, TRMNL X devices ship in Tap mode. However, in your Device Settings > Firmware you can change this gesture from tap to Swipe.

Touching the left-side of the touchbar will go back to the previous screen.

Touching the right-side of the touchbar will go forward through saved screens.

You can swipe left to go back and swipe right to go forward.