68 lines
1.9 KiB
Markdown
68 lines
1.9 KiB
Markdown
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# Receivers (RX)
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## Parallel PWM
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8 channel support, 1 channel per input pin. On some platforms using parallel input will disable the use of serial ports
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and softserial making it hard to use telemetry or gps features.
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## PPM (PPM SUM)
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12 channels via a single input pin, not as accurate or jitter free as methods that use serial communications.
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## MultiWii serial protocol (MSP)
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Allows you to use MSP commands as the RC input. Only 8 channel support to maintain compatibility with MSP.
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## Spektrum
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12 channels via serial currently supported.
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## SBUS
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16 channels via serial currently supported.
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### OpenTX configuration
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If using OpenTX set the transmitter module to D16 mode and select CH1-16 on the transmitter before binding to allow reception
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of 16 channels.
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OpenTX 2.09, which is shipped on some Taranis X9D Plus transmitters, has a bug - https://github.com/opentx/opentx/issues/1701
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The bug prevents use of all 16 channels. Upgrade to the latest OpenTX version to allow correct reception of all 16 channels,
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without the fix you are limited to 8 channels regardless of the CH1-16/D16 settings.
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## SUMD
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16 channels via serial currently supported.
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## SUMH
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8 channels via serial currently supported.
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### Configuration
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See the Configuration document some some RX configuration examples.
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For Serial RX enable `RX_SERIAL` and set the `serialrx_provider` cli setting as follows.
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| Serial RX Provider | Value |
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| ------------------ | ----- |
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| SPEKTRUM1024 | 0 |
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| SPEKTRUM2048 | 1 |
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| SBUS | 2 |
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| SUMD | 3 |
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| SUMH | 4 |
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#### PPM/PWM input filtering.
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Hardware input filtering can be enabled if you are experiencing interference on the signal sent via your PWM/PPM RX.
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Use the `input_filtering_mode` cli setting to select a mode.
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| Value | Meaning |
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| ----- | --------- |
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| 0 | Disabled |
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| 1 | Enabled |
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