Exception classes are called with a debug string parameter, but init does not accept any parameters.

central question:
should we change num_steps_per_cycle or pause_sec or both?

• refactor with cascading update trees of variable depth
• use attrdict instead of orderedattrdict
• offer logging facility, without logging in every case
• write tests

as implemented in #7

there is:

• a new colour picker (seems a bit buggy)
• font awesome 4.7.0

Not sure if this is maintained anymore or not, but I could not get this to work on Raspbian Buster.

Got Node Red working.
Installed Mosquitto.
102shows/server/run.sh (per install doc) does not exist, tried server.py instead, looks like that works. Output:

2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO Starting MyLED
2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO Initializing LED strip...
2020-01-31 15:27:08 raspberrypi 102shows.drivers[10286] INFO sync-up
2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO Connecting to the MQTT Broker
2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO MyLED is ready
2020-01-31 15:27:08 raspberrypi 102shows.server.helpers.configparser[10286] INFO Successfully parsed defaults.yml as default configuration
2020-01-31 15:27:08 raspberrypi 102shows.server.helpers.configparser[10286] INFO Successfully parsed config.yml as user configuration
2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO Starting the show clear
2020-01-31 15:27:08 raspberrypi 102shows.server.mqttcontrol[10286] INFO subscription on Broker localhost for led/MyLED/show/+/start and led/MyLED/show/+/stop
2020-01-31 15:27:08 raspberrypi 102shows.drivers[10289] INFO sync-down

Went to myserverip:1880/ui and all I get is a blank screen.

Max sent me a report about a similar chip to the APA102, SK9822: https://cpldcpu.com/2016/12/13/sk9822-a-clone-of-the-apa102/

To have full compatibility with the SK9822, an additional sending of the start frame must be added to the LEDStrip.show method.

We are doing this as an "idle" show. Must find an elegant way to start it directly after an other show ended

create a driver interface for https://github.com/jgarff/rpi_ws281x

To 512 or 1024 or 1000 values. Float representation?

Benefits:

• make dependency management easier
• eliminate the need for sudo on raspi

as described here:
http://www.cambridgeincolour.com/tutorials/gamma-correction.htm
https://learn.adafruit.com/led-tricks-gamma-correction/

Unify p, p_verifier and p_preprocessor to p object with its own class, defined in server.lightshows.templates.base

The open() method needs a Loader argument.
In configparser.py, get_configuration() has 2 open() calls that should be:
...
defaults = yaml.load(file, Loader=yaml.FullLoader)
...
user_config = yaml.load(file, Loader=yaml.FullLoader)

server-side realisation via MQTT will

similar to:
https://github.com/FastLED/FastLED/wiki/FastLED-Temporal-Dithering

1. clean up log
2. Make logging prompt a bit more beautiful
3. Get own logger for each module

to wait for MQTT to be initialized. otherwise the presets will not be loaded properly

in base template

have an abstract base class that drivers derive and use it throughout 102shows

in class utilities

it does the following:

• get the latest version from the stable/ branch
• (remove .git)
• install 102shows-server executable in /usr/bin
• provide further instructions

advantages

• UI will be simpler
• presets are transparent and viewable via MQTT
• less complex MQTT messages

under server/ introduce a common lib/ or helpers/ folder that contains the following files:

• mqtt/helpers
• lightshows/utilities/general.py
• lightshows/utilities/verifyparameters.py

that makes it easier to share functionality between them

Pattern Paint approach

• single column: led strip state during a particular frame
• row: time coordinate
• easy to edit with any pixel graphics program

variants

• flip rows and columns (better for widescreens)
• alpha channel is brightness

APNG

• no good editors for that
• easy to preview

leave a toast notification for payloads in prefix/sys_name/notification