HDMI whisperer: Unterschied zwischen den Versionen
Pk (Diskussion | Beiträge) KKeine Bearbeitungszusammenfassung |
Pk (Diskussion | Beiträge) K cosmetics |
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==What== | ==What== | ||
Our HDMI switches provide only a classic infrared remote control, to interface with [[Slackomatic]] we replaced 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== | ||
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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== | ||
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# [[: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:Wandlerumgs.jpg|345px|right]] | |||
==Schematic== | ==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]] | |||
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[[Kategorie:Projekte]] | |||