Using a Bluetooth Feather and a diffused NeoPixel strip, build a lightbox to aid in writing and tracing.
Overview, CircuitPython BLE Crickit Rover
Overview, Bluetooth Controlled NeoPixel Lightbox
Overview, BLE Sniffer with nRF52840
Using mobile APP to control the LED panel, Support 7-color text, red, blue, green, yellow, white, cyan, pink Over 8 kinds display actions include
Bluetooth Programmable Rgb Flexible Led Module 16*32 Pixel Display Matrix Sign Android Ios Application Control Led mask Screen 6.7X2.7INCH
Assembly, NeoPixel Badge Lanyard with Bluetooth LE
Bluetooth Controlled Lightsaber XENO3 Pixel Core 1.0 Review
Overview Make it Glow: NeoPixel and LED Diffusion Tips & Tricks
Overview Easy No-Soldering Bluetooth Controlled Room Lights
Overview, Bluetooth Controlled NeoPixel Lightbox