Posts made by yep_DD

yep_DD

@bachoo786 apparently it also depends on the quality of the sensor, I ordered a batch on ebay and got lucky with one where I have to get really close to the glass to trigger it. at first I thought I would change it, but now I am satisfied because it fits the purpose of just activating in case the mirror is off and the other power-on / off logic didn’t work (guests at home). But if I had to redesign I would not use a sensor at all as my other ways of powering the mirror seem far more integrated, e.g. I do not want to see the mirror turn on and / off as this disturbs the design.

yep_DD

Hi @bachoo786

thank you so much. As @MadScientist pointed out the three pins are connected directly to the Raspberry. For evaluating the state I use a small http server (see below). The important parts are where the you can find anything with

monitorStatus

If you want I can reduce the code to what is important for you. This is the complete server which allows control of

ARD Livestream
ARD Tagesschau
Lowering / Increasing volume
Radar Sensor (just the last couple lines of code (search for: GPIO.add_event_detect)
Powerin On / Off Monitor by http Request (used if no one is at home / and at night)

For me the radar sensor is just a backup. I use the power control mainly like this:

If someone is at home and it is between sunrise / sunset, turn on the monitor(1)
If someone is at home but it is night and all lights are off, turn off the monitor(1)
If someone is in front of the monitor turn it on by radar

(1) is done via FHEM (a home automation running on another raspberry, it calls my mirror like this: 10.0.1.49/on (monitor on) 10.0.1.49/off (monitor off) 10.0.1.49/up or /down (for volume) and so on.

#!/usr/bin/python3 -u
host_name = '10.0.1.49'  # Change this to your Raspberry Pi IP address
host_port = 8000
proc = ''
monitorstatus = 'unknown'

import RPi.GPIO as GPIO
from pathlib import Path
import os
import subprocess
import signal
from subprocess import call
from time import sleep
from http.server import BaseHTTPRequestHandler, HTTPServer


SENSOR_PIN = 24

GPIO.setmode(GPIO.BCM)  
GPIO.setup(SENSOR_PIN, GPIO.IN) 

class MyServer(BaseHTTPRequestHandler):

    def monitor_on(channel): #define initial status of Monitor
        if monitorstatus!="on":
            status='Monitor on by Radar Sensor'
            #monitorstatus='on'
            subprocess.Popen(["/usr/bin/vcgencmd", "display_power", "1"], preexec_fn=os.setsid)

    def do_HEAD(self):
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()

    def do_GET(self):
        global proc
        global monitorstatus
        html = '''
           <html>
           <body style="width:960px; margin: 20px auto;">
           <h1>Magic Mirror Control</h1>
           <p>Current GPU temperature is {}</p>
           <p>Podcast: <a href="/play">Play</a> <a href="/stop">Stop</a></p>
           <p>ARD Livestream: <a href="/ard">Play</a> <a href="/stop">Stop</a></p>
           <p>Volume: <a href="/down">down</a> <a href="/up">up</a></p>
           <p>System: <a href="/shutdown">Shutdown</a> <a href="/restart">Restart</a></p>
           <p>Monitor: <a href="/on">On</a> <a href="/off">Off</a></p>
           <div id="podcast-status"></div>
           <script>
               document.getElementById("podcast-status").innerHTML="{}";
           </script>
           </body>
           </html>
        '''
        temp = os.popen("/opt/vc/bin/vcgencmd measure_temp").read()
        self.do_HEAD()
        status = ''
        if self.path=='/':
            #GPIO.setmode(GPIO.BCM)
            #GPIO.setwarnings(False)
            #GPIO.setup(17, GPIO.IN)
            status='nothing'
        elif self.path=='/play':
            if proc=='':
                my_file = Path("/home/pi/MagicMirror/video.mp4")
                if my_file.is_file():
                    statinfo = os.stat('/home/pi/MagicMirror/video.mp4')
                    if statinfo.st_size > 0:
                        proc = subprocess.Popen(["omxplayer", "-o", "alsa:hw:ALSA", "--no-osd", "/home/pi/MagicMirror/video.mp4"], preexec_fn=os.setsid)
                        status='Playing Podcast'
                    else:
                        proc = subprocess.Popen(["omxplayer", "-o", "alsa:hw:ALSA", "--no-osd", "/home/pi/MagicMirror/Loading.mp4"], preexec_fn=os.setsid)
                        status='Not yet available'
                else:
                    proc = subprocess.Popen(["omxplayer", "-o", "alsa:hw:ALSA", "--no-osd", "/home/pi/MagicMirror/Loading.mp4"], preexec_fn=os.setsid)
                    status='Not yet available'
            else:
                status='Stopping Podcast'
                os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
                proc=''
        elif self.path=='/ard':
            if proc=='':
                proc = subprocess.Popen(["livestreamer", "hlsvariant://daserste_live-lh.akamaihd.net/i/daserste_de@91204/master.m3u8", "best", "-vnp", "omxplayer -o alsa:hw:ALSA --no-osd --timeout 20"], preexec_fn=os.setsid)
                status='Playing ARD Livestream'
            else:
                status='Stopping Stream'
                os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
                proc=''
        elif self.path=='/stop':
            if proc!='':
                status='Stopping Podcast'
                os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
                proc=''
            else:
                status='Nothing to stop'
        elif self.path=='/shutdown':
            status='Shutdown'
            subprocess.Popen(["sudo", "shutdown", "-h", "now"], preexec_fn=os.setsid)
        elif self.path=='/restart':
            status='Restart'
            subprocess.Popen(["sudo", "reboot"], preexec_fn=os.setsid)
        elif self.path=='/down':
            status='Volume down'
            subprocess.Popen(["amixer", "set", "Master", "8%-"], preexec_fn=os.setsid)
        elif self.path=='/up':
            status='Volume up'
            subprocess.Popen(["amixer", "set", "Master", "8%+"], preexec_fn=os.setsid)
        elif self.path=='/on':
            if monitorstatus!="on": #switch on Monitor if status was off (by httpRequest NOT Radar)
                status='Monitor on'
                monitorstatus='on'
                subprocess.Popen(["/usr/bin/vcgencmd", "display_power", "1"], preexec_fn=os.setsid)
        elif self.path=='/off':
            if monitorstatus!="off": #switch off Monitor if status was on  (by httpRequest NOT Radar)
                status='Monitor off'
                monitorstatus='off'
                subprocess.Popen(["/usr/bin/vcgencmd", "display_power", "0"], preexec_fn=os.setsid)
        self.wfile.write(html.format(temp[5:], status).encode("utf-8"))


if __name__ == '__main__':
    http_server = HTTPServer((host_name, host_port), MyServer)
    print("Server Starts - %s:%s" % (host_name, host_port))

    try:
        GPIO.add_event_detect(SENSOR_PIN , GPIO.RISING, callback=MyServer.monitor_on) #detect radar sensor and enable Monitor
        http_server.serve_forever()
    except KeyboardInterrupt:
        http_server.server_close()
GPIO.cleanup()

yep_DD

@daniel3490 hi Daniel, it is bit hard to take down the mirror by myself, i have to wait until I have a friend over to help me. I don’t really see the edges of my monitor unless it is really really dark.

yep_DD

@mwel1977 let me know if it worked :). Was it “600 and yes” before the change?

yep_DD

For Wifi Problems I added:

iwconfig wlan0 power off

to

sudo nano /etc/rc.local

now checking the output with

iwconfig wlan0

gives me:

Power Management:off

let’s see if it is solved.

yep_DD

Solution for screensaver blanking:

add:

@xset s noblank 
@xset s off 
@xset -dpms

to:

/home/pi/.config/lxsession/LXDE-pi/autostart

Note: setting it in

 /etc/xdg/lxsession/LXDE-pi/autostart or /etc/xdg/lxsession/LXDE/autostart

did not work anymore, the user files take precedence.

I don’t know why it changed with the latest Raspbian Update or what I did wrong, but if I don’t add the xset commands as above and check with

DISPLAY=:0 xset -q

the screensaver stays enabled. If you guys need to verify it is disabled, just run the above command and check if the following lines appear like that:

Screen Saver:
  prefer blanking:  no    allow exposures:  yes
  timeout:  0    cycle:  600

DPMS (Energy Star):
  Standby: 600    Suspend: 600    Off: 600
  DPMS is Disabled

If blanking and timeout are yes and not 0 the screensaver is active (DPMS should also show disabled)

yep_DD

Update: it seems all the xset options I set are now being ignored, manually disabling the screensaver brings the mirror back.

Update2: It seems also the wifi connections now gets reset every couple of minutes which may cause the resolve error I saw earlier in the logs

yep_DD

Hi guys,

I have updated Raspbian yesterday and ever since my mirror runs for a few minutes and then the screen goes blank. Nothing is in the logs and electron is still running. When I restart it -occassionally- I get resolve errors for github and stuff like that. But pin g / curl and everything works fine via shell.

edit: Webinterface is running. Could it be that the screensaver is active? I have always had it disabled in the LXDE and LXDE-pi config.

Any ideas?

KR,

Stephan

yep_DD

@madscientist okay, so after a couple of days I am absolutely satisfied. I turn on my monitor with a small httpserver python script whenever someone is at home and -if it is night- any HUE light is on. I am now thinking of changing this to different energy saving modes in my magicmirror:

Always On
On when someone is home
On when someone is home and any light is on (turns off at night)
Only on when activated by PIR / Radar Sensor

0_1540763201051_Screenshot 2018-10-28 at 22.46.15.png

yep_DD

@adrien Okay, so it is about 3 seconds boot time I am estimating. No logo anymore. Just the annoying “HDMI1” screen on the lower right. Let’s see if that satisfies me or I will cut the wires as well. Have you tried yet?