On a hot summer day, when you go home or in the office, you want to turn on the air conditioner but you can't find the remote control for a while. It's a very annoying thing. In the era when this mobile phone does not leave, can you use the mobile phone as a remote control to turn on the air conditioner? The answer is of course affirmative. Some smartphones come standard with an infrared transmitter, 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 itself does not have an infrared transmitter?
Then do it yourself as an infrared transmitter for your mobile phone.
With this external infrared transmitter, combined with the corresponding APP can not only control the air conditioner, but also control the TV and other equipment.
So how do you make a mobile phone infrared transmitter yourself?
First, preparation for production
1, renderings
The final effect of the infrared transmitter is the size of the audio plug of the mobile phone headset. There are no extra wires and components, which is simple and not simple.
2, infrared emission tube 1
3. That's it.
Second, the design principle
1, the principle
In fact, the infrared transmitter hardware principle of this mobile phone is very simple, and the components are few. Only one 3.5mm headphone plug and 1 and infrared emitting diode are needed. Other control timings are done by the mobile app. The mobile APP only needs to download the relevant remote control software for free to match the corresponding air conditioner model and then use it directly.
As you can see from the schematic below, you only need to connect the two pins of the infrared diode to the left and right channels of the audio plug. The ground of the audio plug is left floating, if there is no effect when testing. You can try to transfer it. In the schematic diagram, the 3-stage audio interface is used for illustration. If it is a 4-segment interface, the extra section is the headset section, which can be directly suspended, and the principle is the same.
The 3.5mm audio interface prepared this time is a metal case, and the infrared emission tube is an ordinary infrared tube:
The infrared emission tube is soldered to the left and right channel ends of the audio plug according to the above principle:
The tape is insulated with tape to prevent short circuit:
After the welding is completed, the cap of the plug is covered and the test can be carried out:
After the production is completed, you can download the corresponding APP to perform the matching test. You can enjoy your production results after passing the test.
Test: After the download is completed, the remote control will find the audio interface of the mobile phone. Since the naked eye of the human body cannot see the infrared light, you can use another mobile phone to turn on the camera function. When pressing the APP button, check the infrared diode. Whether there is a luminous effect, if any, prove that there is no problem with the hardware connection; if not, re-check the welding is normal and repeat the test.
Tip: Adjust the volume of the phone to the maximum during use, which can increase the infrared emission power and increase the distance.
Fourth, the finished product appreciation
It’s a good idea to look at the remote control next to the bird. Is there a feeling like a weapon:
Bird: "Don't look at me, beware that I will be angry"
Fifth, there is something to say at the end
This DIY mobile phone infrared remote control has a good effect on testing the air conditioner. If you are interested, you can try to download different apps to control infrared devices such as TV sets and set-top boxes, and experience more DIY fun.
linkedin:https://www.linkedin.com/in/nicole-song-64400b147/
Then do it yourself as an infrared transmitter for your mobile phone.
With this external infrared transmitter, combined with the corresponding APP can not only control the air conditioner, but also control the TV and other equipment.
So how do you make a mobile phone infrared transmitter yourself?
P01 infrared transmitter
First, preparation for production
1, renderings
The final effect of the infrared transmitter is the size of the audio plug of the mobile phone headset. There are no extra wires and components, which is simple and not simple.
P02 transmitter finished drawing
2, material preparation
1, 3.5mm audio plug 12, infrared emission tube 1
3. That's it.
P03 DIY protagonist
1, the principle
In fact, the infrared transmitter hardware principle of this mobile phone is very simple, and the components are few. Only one 3.5mm headphone plug and 1 and infrared emitting diode are needed. Other control timings are done by the mobile app. The mobile APP only needs to download the relevant remote control software for free to match the corresponding air conditioner model and then use it directly.
As you can see from the schematic below, you only need to connect the two pins of the infrared diode to the left and right channels of the audio plug. The ground of the audio plug is left floating, if there is no effect when testing. You can try to transfer it. In the schematic diagram, the 3-stage audio interface is used for illustration. If it is a 4-segment interface, the extra section is the headset section, which can be directly suspended, and the principle is the same.
P4 principle icon
Third, DIY process sharingThe 3.5mm audio interface prepared this time is a metal case, and the infrared emission tube is an ordinary infrared tube:
P05 plug and infrared tube
P06 welding
P07 insulation treatment
P08 is completed
Test: After the download is completed, the remote control will find the audio interface of the mobile phone. Since the naked eye of the human body cannot see the infrared light, you can use another mobile phone to turn on the camera function. When pressing the APP button, check the infrared diode. Whether there is a luminous effect, if any, prove that there is no problem with the hardware connection; if not, re-check the welding is normal and repeat the test.
Tip: Adjust the volume of the phone to the maximum during use, which can increase the infrared emission power and increase the distance.
Fourth, the finished product appreciation
It’s a good idea to look at the remote control next to the bird. Is there a feeling like a weapon:
P09 bird's weapon
P10 Beware of birds
This DIY mobile phone infrared remote control has a good effect on testing the air conditioner. If you are interested, you can try to download different apps to control infrared devices such as TV sets and set-top boxes, and experience more DIY fun.
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