Outstanding configuration. Thanks for sharing.
I’ve made a few changes to it so that the moisture sensor can be manually calibrated.
(By placing the sensor in a glass of clean water, writing down the voltage and replacing the “calibration_hundread_perc_voltage” value. Repeat the same step, drying up the sensor unit and noting down the relevant value on “calibration_zero_perc_voltage” in the calibration section).
I’ve added a raw voltage HA sensor to help with the process.
To anyone interested in this config, keep in mind that my unit only has a BME280 so I’ve modified the config accordingly.
EDIT: forgot to mention that I’ve got rid of MQTT support in favor of direct HA api. Got better results
Cheers,
Simon
substitutions:
devicename: "plant_sensor_1"
upper_devicename: Plant Sensor 1
run_duration: 12s # set how long to stay awake - NOT less then 10sec
sleep_duration: 60min # set how long to sleep in minutes
update_interval: 5s
# IPs
fixed_ip: 10.10.10.118
gateway_ip: 10.10.10.1
subnet_mask: 255.255.255.0
# Calibration
calibration_zero_perc_voltage: "2.87"
calibration_hundread_perc_voltage: "1.37"
###############################################################################################
esphome:
name: "${devicename}"
platform: ESP32
board: esp32dev
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
fast_connect: enable
manual_ip:
static_ip: ${fixed_ip}
gateway: ${gateway_ip}
subnet: ${subnet_mask}
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "${devicename}"
password: !secret wifi_fallback_password
captive_portal:
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
password: !secret ota_password
# Deep Sleep
deep_sleep:
id: deep_sleep_control
run_duration: ${run_duration}
sleep_duration: ${sleep_duration}
##time:
## - platform: homeassistant
## id: esptime
i2c:
- id: bus_a
sda: GPIO25
scl: GPIO26
scan: true
setup_priority: -200
- id: bus_b
sda: GPIO21
scl: GPIO22
scan: true
setup_priority: -200
switch:
# Update Mode
- platform: template
name: "update mode ${upper_devicename}"
id: "${devicename}_update_mode"
icon: "mdi:alarm-light"
optimistic: true
# internal: true
turn_on_action:
- deep_sleep.prevent: deep_sleep_control
turn_off_action:
if:
condition:
and:
- switch.is_off: ${devicename}_pumpe
then:
- delay: ${run_duration}
- deep_sleep.enter: deep_sleep_control
# Watering pump
- platform: template
name: "Pumpe ${upper_devicename}"
id: "${devicename}_pumpe"
icon: "mdi:water-pump"
optimistic: true
turn_on_action:
- deep_sleep.prevent: deep_sleep_control
turn_off_action:
if:
condition:
and:
- switch.is_off: ${devicename}_update_mode
then:
- delay: ${run_duration}
- deep_sleep.enter: deep_sleep_control
# Power Switch
- platform: gpio
name: "${upper_devicename} Sensor Power"
pin: 4
id: spower
restore_mode: ALWAYS_ON
internal: true
setup_priority: 1000
# Wake Button
binary_sensor:
- platform: gpio
name: "${upper_devicename} Wake Button"
pin: 35
internal: true
setup_priority: 1000
# Wifi Signal
sensor:
- platform: wifi_signal
name: "WiFi Signal Sensor"
update_interval: ${update_interval}
# Temperature and humidity
# BME280 Sensor
- platform: bme280
i2c_id: bus_a
temperature:
name: "${upper_devicename} Temperature"
oversampling: 16x
unit_of_measurement: "°C"
icon: "mdi:thermometer"
device_class: "temperature"
state_class: "measurement"
accuracy_decimals: 1
pressure:
name: "${upper_devicename} Pressure"
unit_of_measurement: "mbar"
icon: "mdi:gauge"
device_class: "pressure"
state_class: "measurement"
humidity:
name: "${upper_devicename} Humidity"
unit_of_measurement: "%"
icon: "mdi:cloud-percent"
device_class: "humidity"
state_class: "measurement"
address: 0x77
setup_priority: -300
update_interval: ${update_interval}
# Soil humidity %
- platform: adc
pin: 32
name: "${upper_devicename} Soil Moisture"
id: "${devicename}_moisture"
icon: "mdi:watering-can"
attenuation: 11db
# unit_of_measurement: 'V' # uncomment for raw data
unit_of_measurement: '%' # comment for raw data
filters: # comment for raw data
- calibrate_linear: # comment for raw data
# Map 0.0 (from sensor) to 0.0 (true value)
- ${calibration_zero_perc_voltage} -> 0.0 # comment for raw data
- ${calibration_hundread_perc_voltage} -> 100.0 # comment for raw data
update_interval: ${update_interval}
# Soil humidity V %
- platform: adc
pin: 32
name: "${upper_devicename} Soil Moisture Voltage"
id: "${devicename}_moisture_voltage"
icon: "mdi:watering-can"
attenuation: 11db
unit_of_measurement: 'V' # uncomment for raw data
update_interval: ${update_interval}
# Fertilizer sensor
- platform: adc
pin: 34
name: "${upper_devicename} Salt"
id: "${devicename}_salt"
icon: "mdi:flower"
unit_of_measurement: '%'
accuracy_decimals: 4
filters:
- calibrate_linear:
# Map 0.0 (from sensor) to 0.0 (true value)
- 0.0 -> 0.0
- 1.1 -> 100.0
# - sliding_window_moving_average:
# window_size: 15
# send_every: 15
update_interval: ${update_interval}
# Lux sensor
- platform: bh1750
i2c_id: bus_a
name: "${upper_devicename} Illuminance"
id: "${devicename}_lux"
address: 0x23
unit_of_measurement: "lx"
icon: "mdi:white-balance-sunny"
device_class: "illuminance"
state_class: "measurement"
setup_priority: -300
update_interval: ${update_interval}
# Battery
- platform: adc
pin: 33
name: "${upper_devicename} Battery"
id: "${devicename}_voltage"
attenuation: 11db
unit_of_measurement: "V"
icon: "mdi:battery-high"
device_class: "voltage"
state_class: "measurement"
accuracy_decimals: 3
filters:
- multiply: 2
- calibrate_linear:
# Map 0.0 (from sensor) to 0.0 (true value)
- 0.0 -> 0.0
- 4.0 -> 4.0
# - sliding_window_moving_average:
# window_size: 10
# send_every: 10
update_interval: ${update_interval}
# Battery %
- platform: adc
pin: 33
name: "${upper_devicename} Battery %"
id: "${devicename}_percent"
attenuation: 11db
unit_of_measurement: '%'
filters:
- multiply: 2
- calibrate_linear:
# Map 0.0 (from sensor) to 0.0 (true value)
- 3.18 -> 0.0
- 4.20 -> 100.0
# - lambda: |-
# return ((id(${devicename}_voltage).state - 2.76) / 0.379 * 100.00);
# (current - minimum) / difference between max & min * 100
update_interval: ${update_interval}
# Soil Moisture Pump Control (a climate bang bang to control the pump)
climate:
- platform: bang_bang
visual:
min_temperature: 0
max_temperature: 100
temperature_step: 1
name: ${upper_devicename} Regler
sensor: ${devicename}_moisture
default_target_temperature_low: 20
default_target_temperature_high: 70
heat_action:
- switch.turn_on: ${devicename}_pumpe
idle_action:
- switch.turn_off: ${devicename}_pumpe
ESPHome: Batteries, Deep Sleep, and Over-the-Air Updates – Tatham Oddie
The new T-DisplayS3 from LilyGO/TTGO is fantastic, 16mb flash, 8mb RAM and board-sized display (with or without touch). That and the SCD41 for CO2 and the SEN55 for NOx/VOC/PPM. I figured lilygo would release an updated one at somepoint. In the last year I’ve been more tempted to do a flex-pcb version with i2c/Qwiic connectors, so I can flex them under the root-ball etc. Do a couple of lengths, stick the design online (free), plus send them to lilygo and claim 10% reward of sale profit (used to be listed somewhere). The adafruit seesaw design (use atmel m0 to convert i2c) made me think that’s sensible, maybe the new rp2040(raspberry pi pico) could be the brain chip if it was low power (its not) or able to be slept regularly by an LDO. Having the whole esp32 on each soil sensor seemed overkill, and the i2c qwiic /StemmaQT connectors make daisy-chaining easy (have address selectable or done by flex-sensor length).