I like to do it myself, love DIY, and share DIY. Air conditioners are now widely used, but many air conditioners only have one remote control. Many times, they are just put away after use, and they can't be found when they are needed next time. So in this era where mobile phones are always with us, can we use mobile phones as remote controls to turn on air conditioners? The answer is of course yes. Some smart phones are equipped with infrared transmitters as standard, so you only need to download the corresponding air conditioner remote control APP to use it directly. But the question is, what should we do if our mobile phone does not have an infrared transmitter? Then let's make an external infrared transmitter for our mobile phone. With this external infrared transmitter, combined with the corresponding APP, we can not only control the air conditioner, but also control infrared controlled devices such as TVs and set-top boxes. [/quote]EEWORLD DIY—[Share DIY] Bluetooth Speaker@dong2213dongEEWORLD DIY——A desktop storage box with some electronic functions (achievement display)@johnrey[XMC4700 Relax 5V shield Review]04 Timer interrupt to realize serial port timed transmission
1. I took 10 minutes to think about a small question. What is the main cause of myopia? I started wearing glasses in junior high school, and it has been more than ten years now. Regarding myopia, the most common theory I heard before is that long-term viewing of close objects causes the lens diopter to shift. But is it really caused by "long-term viewing of close objects"? ? After careful consideration, and based on my years of experience of lying in front of the computer, it seems that a more accurate statement should be "staring at one thing for a long time without moving". But what do you think?
@XinChaoEEWORLD DIY——USB Fuel Meter Based on ArduinoUNO @北[/url] EEWORLD DIY-Wireless Electronic Fridge Magnet-Finished Product Display@jj1989 EEWORLD DIY——Low power Bluetooth, USB dual-mode mechanical keyboard (6)jpg[/img] @Knock code all nightThink about two small questions about protecting eyesight [quote] 1. I took 10 minutes to think about a small question. What is the main cause of myopia? I started wearing glasses in junior high school, and it has been more than ten years now. Regarding myopia, the most common saying I heard before is that the lens refractive power shifts due to long-term viewing of close objects. But is it really caused by "long-term viewing of close objects"? ? After careful consideration, and based on my years of experience of lying in front of the computer, it seems that a more accurate statement should be "staring at one thing for a long time without moving". But what do you think?
@XinChaoEEWORLD DIY——USB Fuel Meter Based on ArduinoUNO @北[/url] EEWORLD DIY-Wireless Electronic Fridge Magnet-Finished Product Display@jj1989 EEWORLD DIY——Low power Bluetooth, USB dual-mode mechanical keyboard (6)jpg[/img] @Knock code all nightThink about two small questions about protecting eyesight [quote] 1. I took 10 minutes to think about a small question. What is the main cause of myopia? I started wearing glasses in junior high school, and it has been more than ten years now. Regarding myopia, the most common saying I heard before is that the lens refractive power shifts due to long-term viewing of close objects. But is it really caused by "long-term viewing of close objects"? ? After careful consideration, and based on my years of experience of lying in front of the computer, it seems that a more accurate statement should be "staring at one thing for a long time without moving". But what do you think?
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