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Update AM2320 documentation with frequency note #5522

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Merged
merged 7 commits into from
Nov 6, 2025
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Update AM2320 documentation with frequency note #5522

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bc988e3
Update AM2320 documentation with frequency note
jablikcz Oct 24, 2025
e2a520a
Fix datasheet and reword
swoboda1337 Nov 6, 2025
de3f32b
Tweak
swoboda1337 Nov 6, 2025
be9b0bf
Merge branch 'current' into patch-1
swoboda1337 Nov 6, 2025
8eb8c63
Fix i2c ref
swoboda1337 Nov 6, 2025
e8481da
Fix i2c ref
swoboda1337 Nov 6, 2025
e7433ed
Fix i2c ref
swoboda1337 Nov 6, 2025
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10 changes: 10 additions & 0 deletions content/components/sensor/am2320.md
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Expand Up @@ -17,16 +17,26 @@ The `am2320` Temperature+Humidity sensor allows you to use your AM2320
> [!NOTE]
> Logs might include some warnings about receiving a NACK from the sensor.
> This is due to a wake call to the sensor which the sensor never acknowledges by design.
> Sensor works on BUS frequency up to 100kHz, but by default is 200kHz in use. So decrease will help with sensor reliability.
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Copilot AI Oct 24, 2025

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The note should explain why 50kHz is recommended when the sensor supports up to 100kHz. Consider revising to: 'The sensor supports I2C bus frequencies up to 100kHz. ESPHome's default frequency is 200kHz, which may cause reliability issues. Setting the frequency to 50kHz (well below the maximum) ensures stable operation.'

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> Sensor works on BUS frequency up to 100kHz, but by default is 200kHz in use. So decrease will help with sensor reliability.
> The sensor supports I2C bus frequencies up to 100kHz. ESPHome's default frequency is 200kHz, which may cause reliability issues. Setting the frequency to 50kHz (well below the maximum) ensures stable operation.

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@swoboda1337 swoboda1337 Oct 27, 2025

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As far as I know the default is 50kHz? Where do you see a default of 200?

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@jablikcz jablikcz Oct 27, 2025

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I just see there in the logs from some esp device. Maybe this is the default in some sensor library. Lets change the notes as needed.

def_freq


```yaml
# Example configuration entry
i2c:
- id: bus_a
sda: GPIO4
scl: GPIO5
scan: true
frequency: 50000
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[nitpick] Consider adding a comment in the YAML example explaining the frequency value, such as frequency: 50000 # 50kHz - recommended for AM2320 reliability

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frequency: 50000
frequency: 50000 # 50kHz - recommended for AM2320 reliability

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sensor:
- platform: am2320
i2c_id: bus_a
temperature:
name: "Living Room Temperature"
humidity:
name: "Living Room Humidity"
update_interval: 60s
address: 0x5C
```

## Configuration variables
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