A remote controlled light using Blue Dot and a pimoroni blinkt.

blinkt_remote.py

# A remote controlled light using Blue Dot and a pimoroni blinkt.
# install packages - sudo pip3 install bluedot, blinkt, colorzero

import blinkt
from bluedot import BlueDot
from signal import pause
from colorzero import Color
from threading import Event

class BlinktDot():
    def __init__(self):
        blinkt.set_brightness(0.05)
        
        # event to keep track on when the blinkt is ready to be updated
        self.blinkt_ready = Event()
        self.blinkt_ready.set()

        self.color = Color(0,0,255)
        self.light_on = False

        self.bd = BlueDot()
        self.bd.when_double_pressed = self.on_off
        self.bd.when_pressed = self.update_color
        self.bd.when_moved = self.update_color
        self.bd.visible = False
        self.bd.border = True
        
    def update_color(self, pos):
        if self.light_on:
            # only update the color if the blinkt is ready
            if self.blinkt_ready.is_set():
                # calc color
                hue = (pos.angle + 180) / 360
                self.color = Color(h=hue, s=1, v=1)
                self.bd.color = self.color.rgb_bytes
                self.set_pixels(*self.color.rgb_bytes)
                
    def set_pixels(self, r, g, b):
        self.blinkt_ready.clear()
        for pixel in range(8):
            blinkt.set_pixel(pixel, r, g, b)
        blinkt.show()
        self.blinkt_ready.set()

    def clear(self):
        self.blinkt_ready.clear()
        blinkt.clear()
        blinkt.show()
        self.blinkt_ready.set()

    def on_off(self, pos):
        self.light_on = not self.light_on
        if self.light_on:
            self.bd.visible = True
            self.set_pixels(*self.color.rgb_bytes)
        else:
            self.blinkt_ready.wait()
            self.bd.visible = False
            self.clear()


BlinktDot()

pause()