i entered the code for the loop program for the tree lights it runs red green blue then stops it doesnt loop again its exactly the same as in the instructions

Trying the examples huecycle.py, rgb.py and onebyone.py, I get the error
NameError: name 'Color' is not defined

Is it possible to run through one of the sequences with a while loop, while allowing the while condition to be changed, would this need to be ran through two threads? For example:

def run_tree(value):
        while value:
            #sparkle

def set_value():
    if tree_on:
        run_tree(tree_on)
        tree_on = False
    else:
        run_tree(tree_on)
        tree_on = True

More of a request: Is there a hardware schematic documented to what pins are being used and what LED location to what pin?. To determine if can stack another shield/hat. I wanted to see if i could stack another Pi hat "PiFace-Digital2" that has two relays. That hat uses hardware SPI and wanted to use one of the Relays to control another xmas decoration while using the RGB xmas tree.

i use cron on boot and for shutdown.
i use the cron command 30 23 * * * /sbin/shutdown -h now,but when the pi shutdown to red light the lights of christmas tree freezes,they did not turn off,can you please advise me a simple cron command to auto turn them off ?

The example code are very CPU intensive. On a pi zero the cpu is running at 95%+

This is more a request for information than an issue. I just wonder why you're not using the actual SPI pins, 19 and 23. I've heard of "hardware SPI" versus "bit banging", and it seems you're doing the latter? -
physical pin 22 == GPIO 25 (used for clock? )
physical pin 32 == GPIO 12 (used for data? )

Could you please provide the thinking behind your approach?

I have installed a new image and followed the instructions.

Tree seems to work OK with all lights being illuminated on the RGB module - bright white.

When I try rgb.py or random sparkles.py, again all the lights are bright white and never change.

Can you help?

Hi ThePiHut-Crew,

every christmas I set-up my RGB Xmas tree to be a Cheerlight (see cheerlights.com). My implementation is currently based on your "tree.py".

Unfortunately, there isn't any licensing information is attached to your repo. Are you able to add a license?
Or do I have to write my own "tree.py" (to get my project released on github)?

Kind regards,

• BumblebeeMan buzz, buzz

I'm trying to make my RGB tree into a webthing to use with Mozilla IoT, https://github.com/mozilla-iot/webthing-python. I've tried to set the tree off using threading with a common boolean that the IoT can control to turn the tree on and off. The tree code works fine on it's own but when run it as a thread I get the following:

gpiozero.exc.GPIOPinInUse: pin 8 is already in use by <gpiozero.PWMLED object on pin GPIO8, active_high=True, is_active=False>

Here's my code, my python's pretty poor but any help would be great.

from __future__ import division, print_function
from webthing import (Action, Event, Property, SingleThing, Thing, Value, WebThingServer)

from gpiozero import LEDBoard
from gpiozero.tools import random_values
from signal import pause
from tree import RGBXmasTree
from colorzero import Color, Hue
from time import sleep

import logging
import _thread
import time
import uuid
import random

tree = LEDBoard(*range(2,28),pwm=True)
tree_on = True
tl = RGBXmasTree(brightness=0.2)
colors = [Color('red'),Color('green'),Color('blue'),Color('yellow')]
tl.color = (0.5,0.5,0.5)

def random_color():
    r = random.random()
    g = random.random()
    b = random.random()
    return(r,g,b)

def rgb():
    print('rgb')
    for sequence in range (1,50):
        for color in colors:
            tl.color = color
            sleep(3)

def onebyone():
    print('onebyone')
    for sequence in range(1,20):
        for color in colors:
            for pixel in tl:
                pixel.color = color

def hue():
    print('hue')
    tl.color = Color('red')
    for sequence in range(1,200):
        tl.color += Hue(deg=1)

def sparkle():
    print('sparkle')
    for sequence in range(1,80):
        pixel = random.choice(tl)
        pixel.color = random_color()
        #sleep(0.1)

def tree_thread():
    print('Running tree thread')
    while tree_on:
        for sequence in range(1,6):
            if sequence == 1:
                sparkle()

            if sequence == 2:
                hue()

            if sequence == 3:
                onebyone()

            if sequence == 4:
                sparkle()

            if sequence == 5:
                rgb()

    while not tree_on:
        tree.color=(0,0,0)
        print('Tree off')
def make_thing():
        thing = Thing(
                'urn:dev:ops:rgb-tree',
                'RGB Tree',
                ['OnOffSwitch', 'Light'],
                'A web connected RGB Tree'
        )

        thing.add_property(
                Property(thing,
                'on',
                Value(True, lambda tree_on: print('On-State is now', tree_on)),
                metadata={
                        'title': 'On/Off',
                        'type': 'boolean',
                        'description': 'Whether the RGB-Tree is turned on',
                }))
        thing.add_property(
                Property(thing,
                'speed',
                Value(50),
                metadata={
                    '@type': 'BrightnessProperty',
                    'title': 'Speed',
                    'type': 'integer',
                    'description': 'The speed from 0-100',
                    'minimum': 0,
                    'maximum': 100,
'unit': 'percent',
                }))
        return thing

def run_server():
    print('starting run server')
    thing = make_thing()
    print('thing = make_thing')
    # If adding more than one thing, use MultipleThings() with a name.
    # In the single thing case, the thing's name will be broadcast.
    server = WebThingServer(SingleThing(thing), port=8888)
    try:
        logging.info('starting the server')
        server.start()
    except KeyboardInterrupt:
        logging.info('stopping the server')
        server.stop()
        GPIO.cleanup()
        logging.info('done')

if __name__ == '__main__':
    logging.basicConfig(
        level=10,
        format="%(asctime)s %(filename)s:%(lineno)s %(levelname)s %(message)s"
    )
    _thread.start_new_thread(tree_thread, ())
run_server()

Even if I use the procedure to change the brightness 0.1 - 0.9, all LEDs are still fully lit ... what about that?

Hi,

I've tried getting the lights to work on a RPI3B+ to no avail.
I've checked:

• Python 3.7.3
• just-updated pi
• original pi PSU
• GPIO is working (tested a few pins with same code)
• SPI and IC2 both enabled in raspi-config and confirmed in config.txt
• full buster installed (tried with buster lite too)

Any options I've missed?

TIA

C

Hi. I have installed the RGBXmasTree on a Pi Zero W. It works except for the individual pixel control... e.g. tree[1].color = (1,0,1) does nothing; the example code with loops for pixels do nothing... I modified tree.py so that the class def for RGBXmasTree init sets each led separately - i.e. self._value = [(0,1,1),(1,1,0),(0,1,0), ... ] rather than a value * pixels and it duly sets each led to the individual colour, but as I say, I cannot get the leds to change individually after that... Any ideas?

just wont work plz help im new to this

Hi everyone, to completely turn off the lights, how do you do it?

Wondering if you had pondered how to match the RGB Tree up with CheerLights?

https://github.com/ElectronicsGeek/cheerlights

Where can I find the correct colorzero library for use with this project? I’ve searched github and found a library but it doesn’t work with this project.
Any help would be appreciated.

Could you write the directions from a fresh install of raspbian?

Lots of things that are not installed by default on some distrobutions of raspbian, pip, gpiozero, statistics......

Hi,

I'm completely new to python.
I followed the instructions and the tree.py code doesn't seem to do as the instructions say (the lights don;t turn on white).

I'm not sure what has gone wrong or how to fix it.

Hi,
I've set up the board as specfied here. Here's pic, showing the board is correctly slotted in.
I run a python code example but I get no response from the board, and also no python error (although when I took the board out and ran the same code, I got no error).
I'm running the code within a heavily configured Raspian image: https://www.pyimagesearch.com/2016/11/21/raspbian-opencv-pre-configured-and-pre-installed/. Could this be an issue?
Best, Andy.

update: I tried the tree out on a different pi3 using the latest Raspian, and afraid it still does not light (and no warnings from Python).

There are 4 pins labelled D, C, P, and G in the middle of the tree but nothing detailing what they are used for. At first I thought I might be missing an LED but then I realized the example pictures on the website has the same thing.

Hi, having some issues following this guide. I have installed the RGB tree onto a Pi Zero W with a fresh install of raspbian lite OS.
The lights do not come on when testing by running python3 tree.py and I'm not too sure what to troubleshoot next.
Is there a way I can check my GPIO connection?

The code for one by one does not appear to work, no errors produced.

Hi, my tree works, but is very slow. Setting a single value takes about a second (or more). I found out that it's device specific, it's slow on the old Pi 1.2B, but works fine on Pi 4B. Is it because of the software based SPI transfer? Any idea how to make this faster?

I'd need to use it on the old Pi and in the current state it's hard to code any meaningful effect, as you literally see the LEDs changing one by one.

Thanks!