Can 42 MESHLE LED Drivers Light Up in Perfect Sync? We Gave It a Try.

We recently added a new feature to our MESHLE app – a Lighting Editor for Bluetooth Mesh devices. Think of it as a video editor for your lights: define transitions, sync timing, set effects – all on your smartphone or tablet. Simple and convenient, especially for dynamic scenes.

Soon after launching it, we started getting questions from customers using dozens of LED drivers: “Can we light up an entire building façade?” “Can we sync the background lighting of a massive printed installation?” We didn't know. So we decided to find out.

The Test: 42 Devices, Over 40 Meters Apart

We set up a test environment with 42 MESHLE LED drivers, spaced out across more than 40 meters. Each one ran its own animation, but the goal was a shared visual effect – harsh light pulses and a strobe-style sequence – all timed perfectly.

No wires between them.

No controller in the middle.

No Wi-Fi.

No phone connected during playback.

Everything ran over the Bluetooth Mesh network.

See for yourself in the video:

What We Learned

Despite the physical spread and number of devices, the lights behaved as if they were all controlled by a single LED driver. Animations remained in sync across all 42 nodes, thanks to how the mesh network distributes timing and resyncs after each loop.

There was no lag, no drift – and most importantly, no central controller required.

What's Next?

While the result was impressive, we're not done. Handling dozens of devices on a phone screen still comes with UX challenges. We'll keep improving the editor.

But for now, it's good to know: If you want to light up a wall, a stage, or even a full installation – yes, it works. And it works on Bluetooth Mesh.

Would you like to try a similar setup? Let us know.