D1 Mini rain sensor

ESPHome
,
1

Hello,
does someone has a code for the D1 Mini for a rain detection sensor?
Thank you!!

rain
rain1533×488 100 KB

2

Some stuff here should help. But the bigger issue will be the corrosion on that sensor will render it next to useless after a few weeks in the rain.

3

yes, but its not the code for a D1

4

All you have to change is the analogue input pin assignment and the board type.

5

could you tell me how depending on the connection scheme at the image? that would be great. thank you in advance!!

6

Just change the lines

pin: GPIOxx

To whatever GPIO pin you have them connected to.

7

I wonder if you can just hook these up directly as a GPIO binary sensor without the intermediate hardware similar to the door sensor set-up?

8

For the board type:

esphome:
  name: rain-sensor
  platform: ESP8266
  board: d1_mini

For the pin allocation change this section to use the correct pin for the D1 as per below.

  - platform: adc
    pin: A0
    name: "Rain Sensor"
    attenuation: 11db
    internal: true
9

Which should be avoidable by not permanently connecting DC voltage to the sensor but only turning it on when taking a measurement - this and other improvements can be found here :point_down:

10

Hi. Could you finish your project? Can you write your latest working config pls? I would like to make the same rain sensor, but i couldn’t get the right code for it.

11

My Solution:

esphome:
  name: wetterstation
  friendly_name: wetterstation
  platform: ESP8266
  board: d1_mini

logger:

api:
  encryption:
    key: "xxx"

ota:
  password: "xxx"

wifi:
  ssid: xxx
  password: xxx
  domain: ".fritz.box"
  ap:
    ssid: "Wetterstation Fallback Hotspot"
    password: "xxx"

web_server:
  local: true


time:
  - platform: homeassistant
    timezone: Europe/Berlin
    id: homeassistant_time

switch:
  - platform: restart
    name: "Restart Wetterstation"

text_sensor:
  - platform: version
    name: Wetterstation Version



sensor:
  - platform: adc
    pin: A0
    name: "Regen Wert"
    id: RegenWert
    internal: true
    update_interval: 10s
    accuracy_decimals: 1    
    unit_of_measurement: 'V'
  - platform: template
    name: "Regen Sensor Volt"
    unit_of_measurement: "V"
    lambda: return id(RegenWert).state;
    update_interval: 10s

binary_sensor:
  - platform: gpio
    pin:
      number: D1
      inverted: true
    name: "Regensensor"

image
image1854×661 68 KB

image
image360×757 25.8 KB

Regen Sensor Volt:
1V = No Rain
if below 1V than its raining

Regensensor = Rain / No Rain

12

image
image1002×362 17.7 KB

I have rebuilt it, but my sensor reports 0.5v when there is no rain.
So I always have rain. Any idea how I can change this?

Thanks

13

found my mistake :frowning:

14

What was the problem?

15

wrong wireing :weary:

16

Hello

I have the Rainsensor running like the one above.
It works very well.
The only question I have is how to leave the sensor on for a certain time when rain is detected, for example. Could also be a second sensor.
I plan to use the rain sensor for my lawnmower robot, as soon as it rains go into the garage for 3 hours.
I think it’s better if the sensor itself can do this than if I trigger it via an automation. Or do you have any better suggestions.

Thank you

17

A “delayed_off” should be sufficient for that task

2 Likes
18

You could do what indeeed said but put that filter on a copy binary sensor if you’d like to keep the original sensor separate.

1 Like
19

@indeeed @Mahko_Mahko

Thank You both!

binary_sensor:
  - platform: gpio
    id: Regensensor
    pin:
      number: D1
      inverted: true
    name: "Regensensor"
  - platform: copy
    source_id: Regensensor
    id: Regensensor_Verzoegert
    name: "Regensensor_Verzoegert"
    filters:
      - delayed_off: 1h

works perfect!

2 Likes
20

Would you please show me your wiring diagram ?
Thank you!