From f47ec46986198a7e1bb5ddd867922e2038e28ed9 Mon Sep 17 00:00:00 2001 From: Jan Grewe <jan@faked.org> Date: Thu, 27 Oct 2022 14:03:40 +0200 Subject: [PATCH] add VPD tweak SCD40 temperature offset set i2c to 10kHz --- growbox.yaml | 1 + packages/esp32.yaml | 1 + packages/scd40.yaml | 1 + packages/vpd.yaml | 19 +++++++++++++++++++ 4 files changed, 22 insertions(+) create mode 100644 packages/vpd.yaml diff --git a/growbox.yaml b/growbox.yaml index a9a9c58..f7d51d0 100644 --- a/growbox.yaml +++ b/growbox.yaml @@ -10,3 +10,4 @@ packages: yieryi2178: !include packages/yieryi3178.yaml scd40: !include packages/scd40.yaml mlx90614: !include packages/mlx90614.yaml + vpd: !include packages/vpd.yaml diff --git a/packages/esp32.yaml b/packages/esp32.yaml index 4277e27..8a9169d 100644 --- a/packages/esp32.yaml +++ b/packages/esp32.yaml @@ -4,3 +4,4 @@ esp32: i2c: sda: 21 scl: 22 + frequency: 10khz diff --git a/packages/scd40.yaml b/packages/scd40.yaml index f785abe..b3ef038 100644 --- a/packages/scd40.yaml +++ b/packages/scd40.yaml @@ -1,6 +1,7 @@ sensor: - platform: scd4x update_interval: 5s + temperature_offset: 4.85 ambient_pressure_compensation_source: bme280_pressure co2: id: scd40_co2 diff --git a/packages/vpd.yaml b/packages/vpd.yaml new file mode 100644 index 0000000..16e7138 --- /dev/null +++ b/packages/vpd.yaml @@ -0,0 +1,19 @@ +sensor: +- platform: template + id: vpd + name: "Vapor Pressure Deficit" + update_interval: 5s + accuracy_decimals: 2 + unit_of_measurement: 'kPa' + lambda: |- + float temperature = (id(mlx90614_temperature_object).state - 32) * 5/9; + float humidity = id(bme280_humidity).state; + float vpSaturation = 610.7 * pow(10, (7.5 * temperature / (temperature + 237.3))); + float vpDeficit = ((100.0 - humidity) / 100.0) * vpSaturation; + return vpDeficit / 1000; + +prometheus: + relabel: + vpd: + id: vpd + name: "Vapor Pressure Deficit" -- GitLab