xyeShelf

A MQTT controlled, FastLED powered Arduino sketch to animate each pocket of a shelf, having multiple WS2812B's. There are multiple animations that can be run:

sparkling fire animation, inspired by NeoFire.
blue wave Pacifica animation, inspired by this FastLED example.
glowing ball, expanding and collapsing periodically.
growing tree animation.
a game of pong, where the players are blue, the ball white. When a player hits the ball they light up green. When a player misses, the hemispheres light up green and red to indicate the player that lost or won.
colorful disco animation, where the beats per minute can be controlled via the parameter.
two white dots, flowing in circles.

MQTT Control

The xyeShelf_mqtt.py starts a server, through which you an control the xyeShelf. The following MQTT topics are relevant:

/xyeShelf/reboot to publish a 1 to, to reboot the arduino board.
/xyeShelf/animation_requested to publish a integer number to, to choose an animation.
/xyeShelf/parameter_requested to publish a integer number (0 to 255) to, to control a certain aspect of the animation.

	Animation	Parameter
0	fire	Control the liveliness of the animation. The `+‰`-value indicates, how the mixing ratio of two key frames is increased with each loop. When the ratio is at 100%, the next key frame is calculated.
1	pacifica	no effect
2	ball	no effect
3	tree	no effect
4	pong	At 128, the game is balanced for a tie between the players, so both miss the ball equally often. At 0 or 255, one player never misses, the other double as much, compared to balance.
5	disco	Control the beats per minute (`bpm`), as p/2=bpm. So when p=255, the bpm is 128.
6	flow	no effect

Further, other mqtt clients can subscribe to the following topics to see, what is going on on the board:

/xyeShelf/animation_actual to subscribe to, to see the result of requesting an animation.
/xyeShelf/parameter_actual to subscribe to, to see the result of requesting a parameter.

Both actual topics will contain a json response in the following form:

   {
     "state": "<as accepted by sketch or negative for errors>",
     "description": "<textual description for the state>"
   }

The script needs to be run on the device, that the arduino is connected to via USB. Please adjust the server in the python script to your needs.

jandechent/xyeShelf

xyeShelf

MQTT Control

Further Reading