RGB mood-light upgrade kit

Arduino compatible + works with Adafruit NeoPixel library. Requires advanced SMD soldering skills + tools to complete.

Easy installation:

Simply remove the light-bulb and unscrew the nut that holds down the lampshade. If your Samtid comes with a diffuser-plate, remove it and place the circuit board in its place. You may need to add the spacer board (e.g. thin laser-cut acrylic, cardboard...) to make sure none of the circuitry interferes with the lamp. Reassemble in reverse order and run suitable wires down the lamp.

Easy to program:

The control board is removable, so you can easily reprogram the device without having to rip everything apart again. The LED-board stays wherever you put it. This also makes it easier to upgrade the lamp with additional features, which might require redesigning the control board.

Specs:

• Supply voltage: 5.0V DC
• Current consumption: up to 2.75A
• Up to 64 WS2812B RGB LEDs (32 per side, fewer possible, e.g. 16/16)
• ATmega168P / ATmega328P micro controller (QFN-32)
• FTDI-compatible 6-pin header for code upload
• 6-pin AVR ISP header (1.27mm!)
• Works with Adafruit's WS2812 library (NeoPixel)
• optional: Bluetooth HC-05 module [ATmega168] / WiFi ESP8266 module [ATmega328P]

Mechanical specs:

• Center hole diameter: 40.5mm (1.59in)
• Board diameter: 100mm (3.94in)
• Board thickness: 1.0mm
• Board colour: white
• Please do check if the board fits to your lamp. It was designed for an EU version (E27 socket).

What's included (full kit):

• circuit boards + all other necessary on-board components (resistors, ICs...)
• Pre-programmed micro-controller (bootloader + latest firmware)
• 64 WS2812B RGB LEDs
• optional: Bluetooth HC-05 module [ATmega168] / WiFi ESP8266 module [ATmega328P]

What's included (small kit):

• circuit boards + core components (resistors, ICs...)
• Pre-programmed micro-controller (bootloader + latest firmware)
• optional: Bluetooth HC-05 module [ATmega168] / WiFi ESP8266 module [ATmega328P]

Suggested to complete the project:

• Soldering tools fit for SMD parts
• Rock-solid external power supply: 5V,3A + thick wiring / connectors
• Running Arduino-IDE
• Arduino board / AVR-ISP programmer
• USB-Serial adapter with 3.3V logic levels & FTDI-compatible pinout (6-pin with DTR)
• Coding experience - some demo code provided
• ISP pogo-pin adapter
• A free weekend

A few thoughts about code:

The basic button-only control works just fine and the "user-interface" is easy to understand and work with. I consider it as mature and well tested. I've been using it for months now.

The WiFi code working with the ESP8266 module works quite reliably as well, but is still very basic. You can talk to the device using the command line (e.g. with curl) or with any web-browser, but there is no "click & go" interface yet.

As of now, the interaction looks like this:

curl http://192.168.1.199/mode=0&start=0&stop=63&hue=125&sat=255&val=255&

You can enter the same http request (minus the 'curl' bit) in any web-browser.

Should the WiFi module crash it will get a hard-reset and it should recover in a few seconds. It does happen at times, especially if WiFi reception is poor.

The Bluetooth code currently provides the same simple interface as the WiFi code. Connect and send commands like:

SET:mode=0&start=0&stop=31&hue=150&val=255&sat=255&

TLDR: you should be able to write your own code if you fancy WiFi or Bluetooth.