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XLED-SHELL - unofficial control of Twinkly - Smart Decoration LED lights

XLED is a set of bash (shell) scripts to control Twinkly - Smart Decoration LED lights for Christmas.

Official materials says:

Twinkly is a LED light device that you can control via smartphone. It
allows you to play with colouful and animated effects, or create new ones.
Decoration lights, not suitable for household illumination.

Since its Kickstarter project in 2016 many products were introduced with varying properties and features. Most notably products released since September 2019 are identified as Generation II. Older products are since then referred as Generation I.

This is free software available under MIT license.

Depends on following binaries:

  • bash version 4 or higher
  • head and base64 - usually part of coreutils package
  • jq

Firmware version-aware script that queries most of known endpoints from unofficial documentation and writes whole endpoint paths in otput:

$ ./all 192.168.4.1

Wrapper of the previous script that also writes output to a filename in gathered/ directory that consists of device ID and firmware version:

$ ./gather 192.168.4.1

Example of high level wrapper:

$ ./set-demo 192.168.4.1

Another example

$ echo -e 'Hello!' | ./set-echo 192.168.4.1

which requires awk to escape newlines. Other control characters from U+0000 through U+001F are not escaped and jq complains.

Example of low level get where second argument is an endpoint without /xled/v1/ prefix:

$ ./get 192.168.4.1 gestalt

Another example, this time use the DELETE request:

./delete 192.168.4.1 movies

If standard output (stdout) of a script is associated with a terminal or if it is run with environment variable XLED_DEBUG=1, scripts shows more verbose output on standard error output (stderr) and runs jq to pretty format output. Run with XLED_DEBUG=0 to get only response from the device.

All shell scripts are expected to be run from current directory because they sometimes they run other scripts and expects them in the same directory.

Configure a device through Bluetooth to connect to a WiFi

This option is available on for second generation devices.

  1. Follow guide on Twinkly site to Connect Twinkly Generation II to your Local Wi-fi:

     Press and hold the button on the controller until the light turns to a
 solid CYAN color (about 5 seconds). This indicates that Twinkly is
 ready to be paired via Bluetooth to your phone.

  2. Get MAC address of Twinkly's bluetooth adapter:

    $ sudo hcitool lescan

    and look for a device with Twinkly_ prefix

  3. Run:

    $ ./configure-wifi-over-bluetooth-sta 98:f4:ab:1b:b2:10 'home' 'Twinkly'

    where 98:f4:ab:1b:b2:10 is replaced with the MAC address obtained from previous step, home is SSID of your WiFi, password is its password.

This script script accepts also XLED_DEBUG=2 for more verbose output. Script requires following binaries available:

  • python3
  • timeout - usually part of coreutils package
  • gatttool

Configure a device to connect to a WiFi

This expects device to be in accesss point mode and firmware 2.4.24 or higher. The easiest way is to reset the device into factory defaults.

  1. Scan networks and give a little bit time to settle. E.g. with the NetworkManager CLI:

    $ sudo nmcli device wifi rescan && sleep 3 && nmcli device wifi

  2. Display available networks and look for an SSID with Twinkly_ prefix. Again with the NetworkManager CLI:

    If there is none, you might need to rescan WiFi, wait a little bit more or make sure that your device is in AP mode (factory reset).

    $ nmcli device wifi

  3. Connect to Twinkly's AP. For second generation of Twinkly it means use password:

    sudo nmcli device wifi connect Twinkly_33AAFF password Twinkly2019

  4. Get MAC address of WiFi adapter:

    $ ./get 192.168.4.1 gestalt | jq -r .mac

  5. Use this MAC address to encrypt SSID "home" and password "Twinkly" using not yet merged code: scrool/xled#70 :

    $ ./encrypt-91.py 98:f4:ab:2b:b2:50 home Twinkly
Encrypted SSID: iWHuUnNA5rdbyGir7keEfMYDj6J8o74916Bdlo6A1SROglbiXoPYOqY0kMiLrYwUTDHPEWirxOJV15jDBLJqew==
Encrypted password: tXnqWRgsn7dbyGir7keEfMYDj6J8o74916Bdlo6A1SROglbiXoPYOqY0kMiLrYwUTDHPEWirxOJV15jDBLJqew==

  6. Send configuration through API:

    $ echo '{"mode":1,"station":{"dhcp":1,"encssid":"iWHuUnNA5rdbyGir7keEfMYDj6J8o74916Bdlo6A1SROglbiXoPYOqY0kMiLrYwUTDHPEWirxOJV15jDBLJqew==","encpassword":"tXnqWRgsn7dbyGir7keEfMYDj6J8o74916Bdlo6A1SROglbiXoPYOqY0kMiLrYwUTDHPEWirxOJV15jDBLJqew=="}}' | ./post-json 192.168.4.1 network/status
POST network/status
{
"code": 1000
}

Why?

This is a quick way to test Twinkly API.

References

There are other projects that might be more suitable for your needs:

Gitter