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K (sindax pdf verlinkt,typos)
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==How==
==How==
The [LINK] cheap chinese 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 TSOP383.


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.
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==Data==
==Data==
Wav files with the recoded ir commands:
Wav files with the recorded IR commands:
# [[:Datei:Input_hdmi1.wav|HDMI 1]]
# [[:Datei:Input_hdmi1.wav|HDMI 1]]
# [[:Datei:Input_hdmi2.wav|HDMI 2]]
# [[:Datei:Input_hdmi2.wav|HDMI 2]]

Version vom 22. November 2015, 12:17 Uhr

Language: English
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HDMI whisperer
No-Logo.png
Gestartet: 21.11.2015
Involvierte: User:Phaer User:m68k User:Pk
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 control them via the Slackomatic we will replace the infrared receiver with a few wav files and a small custom built amplifier.

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.

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


Schematic

Circuit (n.b: the input is actually 3.3V instead of the shown 5V):

miniatur,left