HDMI whisperer: Unterschied zwischen den Versionen
M68k (Diskussion | Beiträge) K (layout changes) |
Pk (Diskussion | Beiträge) (IR receiver) |
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| (11 dazwischenliegende Versionen von 4 Benutzern werden nicht angezeigt) | |||
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{{Head_en}} | {{Head_en}} | ||
{{Projekt | {{Projekt | ||
|image= | |image=HDMI whisperer.png | ||
|involved=[[User:Phaer]] [[User:m68k]] | |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 | ||
|wtf=It's a custom built remote control interface for our cheap | |wtf=It's a custom-built remote control interface for our cheap Chinese HDMI switches | ||
|lastupdate=21.11.2015 <!-- if lastupdate is not set manually, the date will be set automatically to the date of the latest wikiapage --> | |lastupdate=21.11.2015 <!-- if lastupdate is not set manually, the date will be set automatically to the date of the latest wikiapage --> | ||
|hidden=false | |hidden=false | ||
}} | }} | ||
==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 [[: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> TSOP383 </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. | |||
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. | |||
Wav files with the | ==Data== | ||
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]] | ||
| Zeile 21: | Zeile 31: | ||
# [[: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== | |||
Circuit | |||
the supply voltage is actually +3.3V instead of the shown +5V. | |||
As NPN transistors we took 2x BC547B from Metalab's fine [[Bauteilsortiment#Transistoren|electronic parts stock]]). | |||
<br clear=all> | |||
==Pictures== | |||
[[Datei:HDMI whisperer.jpg]] | |||
__NOTOC__ | |||
[[ | [[Kategorie:Projekte]] | ||
Aktuelle Version vom 3. Januar 2016, 20:25 Uhr
| Language: | English |
|---|
| HDMI whisperer | |
| |
| 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:
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
