HDMI whisperer: Unterschied zwischen den Versionen
M68k (Diskussion | Beiträge) (added wav files) |
Pk (Diskussion | Beiträge) (IR receiver) |
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{{Head_en}} | {{Head_en}} | ||
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{{Projekt | {{Projekt | ||
| − | |image= | + | |image=HDMI whisperer.png |
| − | |involved=[[User: | + | |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. | ||
| + | |||
| + | |||
| + | ==Data== | ||
| + | Wav files with the recorded IR commands: | ||
| + | # [[:Datei:Input_hdmi1.wav|HDMI 1]] | ||
| + | # [[:Datei:Input_hdmi2.wav|HDMI 2]] | ||
| + | # [[:Datei:Input_hdmi3.wav|HDMI 3]] | ||
| + | # [[:Datei:Input_hdmi4.wav|HDMI 4]] | ||
| + | # [[: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]] | |
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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
