39 lines
2.4 KiB
Markdown
39 lines
2.4 KiB
Markdown
# Universal Remotes
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## Air Conditioners
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### Recording signals
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Air conditioners differ from most other infrared-controlled devices because their state is tracked by the remote.
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The majority of A/C remotes have a small display which shows current mode, temperature and other settings.
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When the user presses a button, a whole set of parameters is transmitted to the device, which must be recorded and used as a whole.
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In order to add a particular air conditioner to the universal remote, 6 signals must be recorded: `Off`, `Dh`, `Cool_hi`, `Cool_lo`, `Heat_hi`, `Heat_lo`.
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Each signal (except `Off`) is recorded using the following algorithm:
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1. Get the remote and press the **Power Button** so that the display shows that A/C is ON.
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2. Set the A/C to the corresponding mode (see table below), while leaving other parameters such as fan speed or vane on **AUTO** (if applicable).
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3. Press the **POWER** button to switch the A/C off.
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4. Start learning a new remote on Flipper if it's the first button or press `+` to add a new button otherwise.
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5. Point the remote to Flipper's IR receiver as directed and press **POWER** button once again.
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6. Save the resulting signal under the specified name.
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7. Repeat the steps 2-6 for each signal from the table below.
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| Signal | Mode | Temperature | Note |
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| :-----: | :--------: | :---------: | ----------------------------------- |
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| Dh | Dehumidify | N/A | |
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| Cool_hi | Cooling | See note | Lowest temperature in cooling mode |
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| Cool_lo | Cooling | 23°C | |
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| Heat_hi | Heating | See note | Highest temperature in heating mode |
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| Heat_lo | Heating | 23°C | |
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Finally, record the `Off` signal:
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1. Make sure the display shows that A/C is ON.
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2. Start learning a new signal on Flipper and point the remote towards the IR receiver.
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3. Press the **POWER** button so that the remote shows the OFF state.
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4. Save the resulting signal under the name `Off`.
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The resulting remote file should now contain 6 signals. Any of them can be omitted, but that will mean that this functionality will not be used.
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Test the file against the actual device. Every signal must do what it's supposed to.
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If everything checks out, add these signals to the [A/C universal remote file](/assets/resources/infrared/assets/ac.ir).
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Keep the signals of the same type grouped together (e.g. an `Off` signal must follow a previous `Off` one).
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When done, open a pull request containing the changed file.
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