The problem is that you want to “open/close” a short time if the temperature is almost right and a longer time if the error is larger! I have found some solution in Nod-red, but problems in that to. Have a solution now in automation short time if error is small and then other automation that open longer time if larger error. But I can’t get a variable setpoint in automation!
Hi!
This is one solution from nod-red (node-red-contrib-timeprop (node) - Node-RED) but i want to have it in the esp controler if there is some problem with the net 
How about my solution?
TherE is floor heating.Left pic is ON/OFF ,middle pic is target temp and right pic is current temp.Graph for 24 hours,so as you can see,the temperature stays in target range.Sorry about my english.
and there is target temp low and high
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If I understand correctly, yo would ideally want to control valve position continuously between fully open and fully closed, right?
You can do this by using the custom output component and write a lambda function that translates the 0-100% output from the PID climate component to a discrete amount of time the signal to the motor is sent.
This will probably not be 100% accurate, and error will accumulate.
Also, you will need to have a global variable outside the lambda function that keeps track of current motor position.
https://esphome.io/components/output/template.html
A more accurate option is to also put a rotary encoder on the motor/valve assembly if possible, and also add that sensor to the ESP to have a better feedback loop
Hi,No,3 way mixing valve does not need to fully open or close,it depends.It mixing together hot water that goes to house from heater and cooled down water,that comes from house and send mixed water(wanted temperature) to house .It may be stays for a month to open only 20%.So my way works perfectly sience december 2022.Heat and cool actions are scripts,that turning on valve for closing or opening with delays.Sory about my english.
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Hi, I will try yours. just need to do some google translate
Thanks for your script, it works for me very well for my mixing valve.
You welcome !
Hi, do you mind posting the “translated” config? 
I’m looking into doing the same except it’s for my hot tub.
Thanks!
I am using the cover component to control my 1-way valve; similar setup. Using a sonoff dual module. Key is to have a run length; my valve closes in 16seconds. The interlock prevents activating both relays simultaneously, causing damage to the actuator.
globals:
- id: action_open
type: bool
initial_value: "false"
- id: action_close
type: bool
initial_value: "false"
- id: booting
type: bool
initial_value: "true"
# GPIO12 Power 1 --> Close
# GPIO5 Power 2 --> Open
switch:
# The switch that turns the UP direction on
- platform: gpio
pin: GPIO5
id: open_pin
# Use interlocking to keep at most one of the two directions on
interlock: &interlock_group [open_pin, close_pin]
# If ESP reboots, do not attempt to restore switch state
restore_mode: always off
# The switch that turns the DOWN direction on
- platform: gpio
pin: GPIO12
id: close_pin
interlock: *interlock_group
restore_mode: always off
- platform: restart
name: "Radiator Kantoor Restart"
cover:
- platform: time_based
name: "Radiator Kantoor"
id: radiator_kantoor
device_class: "damper"
open_action:
- switch.turn_off: close_pin
- switch.turn_on: open_pin
open_duration: 16sec
close_duration: 16sec
close_action:
- switch.turn_off: open_pin
- switch.turn_on: close_pin
stop_action:
- switch.turn_off: open_pin
- switch.turn_off: close_pin
I am controlling the cover position with a PID controller.
in climate.yaml:
- platform: smart_thermostat
name: Torenkamer
unique_id: thermostat_torenkamer
heater: input_boolean.radiator_kantoor
target_sensor: sensor.temperatuur_kantoor_ventilatie
min_temp: 15
max_temp: 25
ac_mode: False
target_temp: 19
keep_alive:
seconds: 60
away_temp: 15
kp: 2
ki: 600
kd: 300
sampling_period: 10
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I control my 3 way mixing valve with a Siemens PLC, function block PID_3Step. Google it.
It has two outputs UP and DN for opening and closing the valve. You configure it with a transition time, min run time and max run time. This will replace the end switches and the position feedback.
With 300 s transition time, a 50% output from the controller will set the UP output for 150 s if starting from 0. I guess that is the principle, next step is to code it
Hi,
what do you use globals variables for? I don’t see them anywhere in the code
That could have been a leftover of an earlier iteration.
Got my 3-way-mixing valve with the PID Climate platform working by controlling directly two gpios (3-way-mixing valve warmer/cooler) with sigma_delta_output, no cover needed.
The temperature sensor update_interval is in my case 15sec, to get a more stable controller
climate:
- platform: pid
name: heating_radiator_mixer
sensor: temperature_radiator_heating_flow
default_target_temperature: 35°C
heat_output: sd_radiator_warmer
cool_output: sd_radiator_cooler
visual:
min_temperature: 25
max_temperature: 70
temperature_step: 5
control_parameters:
kp: 0.0025
ki: 0.0
kd: 0.5
output_averaging_samples: 5 # smooth the output over 5 samples
derivative_averaging_samples: 5 # smooth the derivative value over 10 samples
output:
- platform: sigma_delta_output
update_interval: 1s
id: sd_radiator_warmer
turn_on_action:
then:
- homeassistant.service:
service: switch.turn_on
data:
entity_id: switch.gpio_radiator_mixer_warmer
turn_off_action:
then:
- homeassistant.service:
service: switch.turn_off
data:
entity_id: switch.gpio_radiator_mixer_warmer
- platform: sigma_delta_output
update_interval: 1s
id: sd_radiator_cooler
turn_on_action:
then:
- homeassistant.service:
service: switch.turn_on
data:
entity_id: switch.gpio_radiator_mixer_cooler
turn_off_action:
then:
- homeassistant.service:
service: switch.turn_off
data:
entity_id: switch.gpio_radiator_mixer_cooler
sensor:
- platform: pid #Sensor just for debug purposes
name: "PID Climate Radiator Heat Result"
type: HEAT
climate_id: heating_radiator_mixer
- platform: pid #Sensor just for debug purposes
name: "PID Climate Radiator Cool Result"
type: COOL
climate_id: heating_radiator_mixer
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Brilliant, this is exactly what I’d like to use in my floor heating. Can I ask for your hardware setup? I have trouble finding a 3-way-mixing valve that I can control using homeassistant. I’m frankly quite bored to dial stuff in manually
Just for explanation:
This is one of these 3-way-valves. Red: heat supply from burner/boiler, blue: return from floor heating, pink: mixed (desired temp) to floor heating. It’s got 2 phases which can be used to drive the motor. Unfortunately, this is no stepper motor. Therefore, you have to take this “120s from open to close” thing.
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