HDMI whisperer: Unterschied zwischen den Versionen

aus Metalab Wiki, dem offenen Zentrum für meta-disziplinäre Magier und technisch-kreative Enthusiasten.
Zur Navigation springenZur Suche springen
(IR receiver)
 
(5 dazwischenliegende Versionen von 3 Benutzern werden nicht angezeigt)
Zeile 1: Zeile 1:
 
{{Head_en}}
 
{{Head_en}}
 
{{Projekt
 
{{Projekt
|image=No-Logo.png
+
|image=HDMI whisperer.png
|involved=[[User:Phaer]] [[User:m68k]] [[User:Pk]]
+
|involved=[[User:Phaer]] [[User:m68k]] [[User:Pk]] [[User:Jackie]]
 
|startdate=21.11.2015
 
|startdate=21.11.2015
 
|status=active|in progress
 
|status=active|in progress
Zeile 10: Zeile 10:
 
}}
 
}}
 
==What==
 
==What==
Our HDMI switches provide only a classic infrared remote control, to control them via the [[Slackomatic]] we will replace the infrared receiver with a few wav files and a small custom-built level shifter.
+
Our HDMI switches provide only a classic infrared remote control, to interface easier with [[Slackomatic]] we replaced the infrared receiver with a few wav files and a small custom-built level shifter.
 +
 
  
 
==How==
 
==How==
The cheap [[:Datei:5_Ports_1080P_Video_5_to_1_HDMI_Switch_Switcher_Splitter_Hub_for_HDTV_PS3_DVD_IR_Remote_.pdf|Sindax 5 to 1 HDMI switches]] we got have an IR remote control that comes with a 3.5mm audio connector to plug in a cape with a TSOP383.
+
The cheap [[:Datei:5_Ports_1080P_Video_5_to_1_HDMI_Switch_Switcher_Splitter_Hub_for_HDTV_PS3_DVD_IR_Remote_.pdf|Sindax 5 to 1 HDMI switches]] we got have an IR remote control that comes with a 3.5mm audio connector to plug in a cape with a <strike>&nbsp;TSOP383&nbsp;</strike> [[:Datei:AX-1838HS_datasheet.pdf|AX-1838HS]] IR receiver module.
  
 
This receiver was plugged into the audio port of a laptop and the generated audio was captured.
 
This receiver was plugged into the audio port of a laptop and the generated audio was captured.
Zeile 20: Zeile 21:
  
 
The files were post-edited using Audacity and now we can simply play them and attach the audio out from the Raspberry Pi directly to the HDMI switch IR receiver port with a small piece of voltage converter logic in between.
 
The files were post-edited using Audacity and now we can simply play them and attach the audio out from the Raspberry Pi directly to the HDMI switch IR receiver port with a small piece of voltage converter logic in between.
 +
  
 
==Data==
 
==Data==
Zeile 28: Zeile 30:
 
# [[:Datei:Input_hdmi4.wav|HDMI 4]]
 
# [[:Datei:Input_hdmi4.wav|HDMI 4]]
 
# [[:Datei:Input_hdmi5.wav|HDMI 5]]
 
# [[:Datei:Input_hdmi5.wav|HDMI 5]]
 +
 +
[[:Datei:Hdmi_files_by_channel.tar.gz|The more or less mono files from above split into stereo files with only the left or right channel in use]]
 +
[[Datei:Wandlerumgs.jpg|345px|right]]
  
 
==Schematic==
 
==Schematic==
 +
Circuit
  
Circuit (n.b: the supply voltage is actually 3.3V instead of the shown 5V. As NPN transistors we took 2x BC547B from Metalab's [[Bauteilsortiment#Transistoren|electronic parts stock]]):
+
the supply voltage is actually +3.3V instead of the shown +5V.  
  
[[Datei:Wandlerumgs.jpg|miniatur,left]]
+
As NPN transistors we took 2x BC547B from Metalab's fine [[Bauteilsortiment#Transistoren|electronic parts stock]]).
  
 +
<br clear=all>
 +
==Pictures==
 +
[[Datei:HDMI whisperer.jpg]]
  
[[Datei:HDMI whisperer.jpg]]
+
 
 +
__NOTOC__
 +
 
 +
[[Kategorie:Projekte]]

Aktuelle Version vom 3. Januar 2016, 20:25 Uhr

Language: English
Subpages:
HDMI_whisperer hat keine Unterseiten.


HDMI whisperer
HDMI whisperer.png
Gestartet: 21.11.2015
Involvierte: User:Phaer User:m68k User:Pk User:Jackie
Status: active
Beschreibung: It's a custom-built remote control interface for our cheap Chinese HDMI switches
Shutdownprozedur:
Zuletzt aktualisiert: 21.11.2015

What

Our HDMI switches provide only a classic infrared remote control, to interface easier with Slackomatic we replaced the infrared receiver with a few wav files and a small custom-built level shifter.


How

The cheap Sindax 5 to 1 HDMI switches we got have an IR remote control that comes with a 3.5mm audio connector to plug in a cape with a  TSOP383  AX-1838HS IR receiver module.

This receiver was plugged into the audio port of a laptop and the generated audio was captured.

That gave us 5 different audio files.

The files were post-edited using Audacity and now we can simply play them and attach the audio out from the Raspberry Pi directly to the HDMI switch IR receiver port with a small piece of voltage converter logic in between.


Data

Wav files with the recorded IR commands:

  1. HDMI 1
  2. HDMI 2
  3. HDMI 3
  4. HDMI 4
  5. HDMI 5

The more or less mono files from above split into stereo files with only the left or right channel in use

Wandlerumgs.jpg

Schematic

Circuit

the supply voltage is actually +3.3V instead of the shown +5V.

As NPN transistors we took 2x BC547B from Metalab's fine electronic parts stock).


Pictures

HDMI whisperer.jpg