Today little X teaches you to use your smartphone to do a universal remote need to prepare some materials: 1: An infrared emitter with 38K carrier, (wavelength 940nm) Standard mode: 30khz~60khz; Remote mode: 38K. Our universal remote control best Use brand brand 38k+-5kb are applicable to the normal 38k+-3kb applicable part of the remote control carrier maximum to the maximum 38k±20k, our remote control will not be used, so our universal remote control only about 85% of the infrared device Applicable to the following infrared control equipment (TV, set-top box, air-conditioning, projector, box, DVD, amplifier, SLR, fan, infrared lamp) need a carrier 38K infrared emitter, no words can be removed from the abandoned remote control, how to determine whether it is good, test the quality of the infrared LEDs, can The test is based on the method of testing the normal silicon diode forward and backward resistance.
Operating mode: ≤10ma, Standby mode: ≤0.5ua;
Dial the multimeter in the Rx100 or rx1k block, the black form pen to connect the infrared light-emitting diode positive, the red pen to the negative, the measured forward resistance should be in the 20≈40k; Black form pen connected with infrared light emitting diode cathode, red pen connected positive pole, measured reverse resistance should be greater than 500K, there is a simple method
is to put your phone camera open, and then to the remote control of the infrared emission diode, press the button above, you can see a flash. Because the infrared light is invisible to the naked eye. Some remote controls see red because they add some 600-700nm visible red . We'd better prepare more than one, in order to improve the efficiency of the launch. Here I prepared two to put them together, to the mobile phone to control, our mobile phone must be infrared launcher, some mobile phone comes with, but most of the interior is not with infrared emitters. We'll have to figure out a way to use the 3.5mm headphone interface. One is the OTG control of the USB, but most of the phones do not have the OTG function, this method is not available. Another way is through the now so-called 36x Gurveen, abstract control the mobile phone inside the app is how to use the phone to connect the infrared tube, we choose 3.5mm headphone port, All these phones have. 2: So we need a 3.5mm aux interface Here we directly apply the Aux interface on the headset Lose the headset head learn the Aux interface we weld the IR emitter diode after welding, add layer wrapping, in order to pull the time convenient, not too long ah, or add a shell. I'm using a heat shrink tube. . Office Corner of the air-conditioning model of the United States kfr-51lw The beauty of the laboratory in the air conditioning again speaking of the principle, we use the manufacturer's public encoding format, these Android apps have been done to download a mobile Phone Remote Control wizard app,98% above the encoding format, We just need to direct Shihon on the line, simple: go to Google play store! Android Central Search directly app configuration Download try our test again. . control mode, temperature plus reduce wind speed, timing (all normal) Control switch (normal) app also supports direct use as a desktop plug-in the entire testing process using a glory, a , a sister with a cool pie, aFake Android, all test OK. Two air conditioning tests are normal. Perfect! A large number of test processes have been found to be in the receiving area. Generally there is a 5M above, if you add some driving circuit effect will be better, but if not the effect of the result is very good. so Easy to put, so that we can use the phone as our external energy remote control. It's the home appliance. http://www.cnblogs.com/1hua1ye/p/4235077.html
Smart Home Infrared remote CONTROL---Mobile phone universal infrared remote control
