Cloud Computing

LG 냉난방기 구형 프로토콜 장치종류 : 0x88 ON : 0x8804B4 ( 온 : 26 도) ON : 0x8800B4 ( 온 : 냉방, 26도 ) OFF: 0x88C005 (아래 세항목은 합쳐서 운영됨) 운전선택 : 0x880x__( x = 8 : 냉방, 9 : 제습, 4:난방(?), a:송풍, b:인공지능,  c:난방 ) 온도조절 : 0x880_x_( x = 1 ~ F, 16도 ~ 30도 ) 풍량조절 : 0x880__x( x = 0 - 4, 5: 가변) 인공지능모드시 인공지능희망온도 : 0x880_x5( x = 0 ~ 4 저,중저,표준,중고,고 ) 풍향상하 : 0x881000 파워냉방 : 0x881008 절전모드 : 0x88C009 꺼짐예약 : 0x889xxx (1분 ~ 7시간) 꺼짐예약 1시간 : 0x88903C 꺼짐예약 2시간 : 0x889078 꺼짐예약 3시간 : 0x8890B4 꺼짐예약 7시간 : 0x8891A4 온도 1 : 16 2 : 17 3 : 18 4 : 19 5 : 20 6 : 21 7 : 22 8 : 23 9 : 24 a : 25 b : 26 c : 27 d : 28 e : 29 f : 30

SB-Projects: IR Remote Control : IR Remote Control Theory The cheapest way to remotely control a device within a visible range is via Infra-Red light. Almost all audio and video equipment can be controlled this way nowadays. Due to this wide spread use the required components are quite cheap, thus making it ideal for us hobbyists to use IR control for our own projects. This part of my knowledge base will explain the theory of operation of IR remote control, and some of the protocols that are in use in consumer electronics. Infra-Red Light Infra-Red actually is normal light with a particular colour. We humans can't see this colour because its wave length of 950nm is below the visible spectrum. That's one of the reasons why IR is chosen for remote control purposes, we want to use it but we're not interested in seeing it. Another reason is because IR LEDs are quite easy to make, and therefore can be very cheap. Although we humans can't see the Infra-Red light e...

tutorials:learn:sensors:ir.html [AdaWiki] : What is an IR detection sensor? IR detectors are little microchips with a photocell that are tuned to listen to infrared light. They are almost always used for remote control detection - every TV and DVD player has one of these in the front to listen for the IR signal from the clicker. Inside the remote control is a matching IR LED, which emits IR pulses to tell the TV to turn on, off or change channels. IR light is not visible to the human eye, which means it takes a little more work to test a setup. There are a few difference between these and say a CdS Photocells : IR detectors are specially filtered for Infrared light, they are not good at detecting visible light. On the other hand, photocells are good at detecting yellow/green visible light, not good at IR light IR detectors have a demodulator inside that looks for modulated IR at 38 KHz. Just shining an IR LED wont be detected, it has to be PWM blinking at 38KHz. Pho...