Arduino and external powered I2C devices
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When Arduino is used with I2C devices powered by external source there will be problems. In my project I use Arduino with Stand-by power and IR remote. When Power On command is executed Arduino turns on main power supply for all other devices, including I2C extenders (PCA9359). When testing the …
OM32CPS optical mouse sensor
Simplest LIRC alsa-audio receiver
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I see simple way for receiving and testing IR remote here: http://www.lirc.org/ir-audio.html But there is even simpler receiver, containing only 1 element! All computer microphones are electret type. They need power to work and in computer microphone input there is provided power just as in this image: This power is …
Arduino IRremote added Samsung protocol
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Trying to decode some remote controls I saw waveform of Samsunfg IR protocol is almost the same as NEC one. Deatils are in following pictures (created with Audacity and simple IR receiver connected to mic input). NEC: Samsung: Differences are only in heading pulse time. For NEC is 9ms mark …