Infinity Cube Lamp – ESP8266 RGB lamp with IR remote and OTA updates

The Infinity Cube is an open cube frame lamp balanced on one corner on a round base. An RGB LED strip runs inside the edges behind a diffuser, so the whole frame glows. An ESP8266 NodeMCU runs it with open-source firmware.

Features

• Full RGB colors from a cheap 24-button IR remote (the common one with colored buttons)

• Brightness in 10 % steps (10–100 %)

• ON restores the last color you used

• Indicator mode: every 5 seconds the lamp loads a URL you choose and shows the color it returns (JSON {"rgb": [r, g, b]}). You can use it as a build status, CI or notification light. SMOOTH switches modes and FLASH shows which mode is on.

• Updates its firmware over WiFi from GitHub Releases at every startup

• Glows orange while booting and connecting to WiFi, and blinks red when the indicator URL can't be reached

Electronics

• ESP8266 NodeMCU v2

• RGB LED strip (non-addressable) [voltage], driven through 3× logic-level MOSFET

• IR receiver (e.g. VS1838B / TSOP38238)

• 24-button RGB IR remote

• Power supply [x V / x A]

You can change the pins in include/config.h.

Other materials

• [Diffuser – material / print settings]

• [Screws, glue, wires, ...]

Firmware The source code, build instructions and a printable A5 user manual are on GitHub

Build and flash with PlatformIO (pio run -t upload). Put your WiFi credentials in include/secrets.h. They are saved to EEPROM on the first USB flash.

Assembly

1. [Print the frame parts, diffusers and base]

2. [Put the LED strip into the frame edges and insert the diffusers]

3. [Wire the NodeMCU, MOSFETs and IR receiver in the base]

4. [Attach the cube to the base]