Added support of bluetooth remote G20BTS PRO to my Volumio on RPI4

Diy and Tweaks Diy and Tweaks
26

You need to look for a remote that have the buttons you need. For me all the BT remotes I have (with dongle) just works.
like:

import evdev
import time
import subprocess
import asyncio
import struct
import os
import constants

from evdev import InputDevice, categorize, ecodes

DEVICENAME = "ZYSD.Ltd HCY RC"

EV_VAL_PRESSED = 1
EV_VAL_RELEASED = 0

devices = [evdev.InputDevice(path) for path in evdev.list_devices()]

async def print_events(device):
    global  STATUS            
    async for event in device.async_read_loop():
        if event.type == ecodes.EV_KEY:
            if event.value == EV_VAL_PRESSED:
                print(evdev.categorize(event))

                try:
                    print("You Pressed: " + ecodes.KEY[event.code])
                except:
                    print("You Pressed: " + ecodes.KEY[event.code][1])
                    
                if event.code == constants.KEY_ENTER:           # KEY_ENTER
                    command = 'volumio toggle'
                elif event.code == constants.KEY_PLAYPAUSE:     # KEY_PLAYPAUSE
                    command = 'volumio toggle'                    
                elif event.code == constants.KEY_LEFT:          # KEY_LEFT
                    command = 'volumio previous'
                elif event.code == constants.KEY_RIGHT:         # KEY_RIGHT
                    command = 'volumio next'
                elif event.code == constants.KEY_UP:            # KEY_UP
                    command = 'bash /home/volumio/scripts/brightness.sh up'
                elif event.code == constants.KEY_DOWN:          # KEY_DOWN
                    command = 'bash /home/volumio/scripts/brightness.sh down'
                elif event.code == constants.KEY_PAGEUP:        # KEY_PAGEUP
                    command = 'node /data/plugins/user_interface/randomizer/randomTracks'
                elif event.code == constants.KEY_PAGEDOWN:      # KEY_PAGEDOWN
                    command = 'node /data/plugins/user_interface/randomizer/randomAlbum'                        
                elif event.code == constants.KEY_VOLUMEDOWN:    # KEY_VOLUMEDOWN
                    command = 'volumio volume minus'
                elif event.code == constants.KEY_VOLUMEUP:      # KEY_VOLUMEUP
                    command = 'volumio volume plus'
                elif event.code == constants.KEY_BACK:          # KEY_BACK
                    command = 'volumio clear'
                elif event.code == constants.KEY_MUTE:          # KEY_MUTE
                    command = 'volumio volume toggle' 
                elif event.code == constants.KEY_BACKSPACE:     # KEY_BACKSPACE
                    command = 'volumio clear'
                elif event.code == constants.KEY_VOICECOMMAND:  # KEY_VOICECOMMAND  
                    command = 'python3 /home/volumio/scripts/radioplaylist.py'
                elif event.code == constants.KEY_COMPOSE:       # KEY_COMPOSE
                    command = 'volumio random'
                process = subprocess.Popen(command.split(), stdout=subprocess.PIPE)
                
for device in devices:
    dev = InputDevice(device.path)
    if dev.name.find(DEVICENAME) >= 0:
        print(device.path, dev.name)
        asyncio.ensure_future(print_events(device))

loop = asyncio.get_event_loop()
loop.run_forever()

or: