ReefRhythm - Advance Stepper Motor Controller with OpenSource

butch708 · May 30, 2024

I'm too stupid to set up mqtt. Maybe it would be a good idea to test the connection to mqtt server in the webgui.?

home-assistant.log

Code:

2024-05-30 19:03:49.658 ERROR (MainThread) [homeassistant.components.automation.start_dosing_pump] Start Dosing Pump: Error executing script. Error for call_service at point of sale 1: Error rendering data template: ValueError: Template error: float got invalid input 'unknown' when rendering template '{
  "id": 1,
  "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
  "amount": {{ states('input_number.dosing_pump_amount') | float }},
  "duration": {{ states('input_number.dosing_pump_duration') | float }}
}' but no default was specified
2024-05-30 19:03:49.658 ERROR (MainThread) [homeassistant.components.automation.start_dosing_pump] Error while executing automation automation.start_dosing_pump: Error rendering data template: ValueError: Template error: float got invalid input 'unknown' when rendering template '{
  "id": 1,
  "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
  "amount": {{ states('input_number.dosing_pump_amount') | float }},
  "duration": {{ states('input_number.dosing_pump_duration') | float }}
}' but no default was specified
2024-05-30 19:03:51.190 ERROR (MainThread) [homeassistant.components.automation.start_dosing_pump] Start Dosing Pump: Error executing script. Error for call_service at point of sale 1: Error rendering data template: ValueError: Template error: float got invalid input 'unknown' when rendering template '{
  "id": 1,
  "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
  "amount": {{ states('input_number.dosing_pump_amount') | float }},
  "duration": {{ states('input_number.dosing_pump_duration') | float }}
}' but no default was specified
2024-05-30 19:03:51.191 ERROR (MainThread) [homeassistant.components.automation.start_dosing_pump] Error while executing automation automation.start_dosing_pump: Error rendering data template: ValueError: Template error: float got invalid input 'unknown' when rendering template '{
  "id": 1,
  "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
  "amount": {{ states('input_number.dosing_pump_amount') | float }},
  "duration": {{ states('input_number.dosing_pump_duration') | float }}
}' but no default was specified

automations.yaml

Code:

- id: Start Dosing Pump
  alias: "Start Dosing Pump"
  trigger:
    - platform: event
      event_type: state_changed
      event_data:
        entity_id: input_button.start_dosing_pump
  action:
    - service: mqtt.publish
      data_template:
        topic: "/ReefRhythm/24587cda78dc/dose"
        payload: >
          {
            "id": 1,
            "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
            "amount": {{ states('input_number.dosing_pump_amount') | float }},
            "duration": {{ states('input_number.dosing_pump_duration') | float }}
          }
  mode: single

- id: Stop Dosing Pump
  alias: "Stop Dosing Pump"
  trigger:
    - platform: event
      event_type: state_changed
      event_data:
        entity_id: input_button.stop_dosing_pump
  action:
    - service: mqtt.publish
      data_template:
        topic: "/ReefRhythm/24587cda78dc/stop"
        payload: >
          {"id": 1}
  mode: single

If I start one of the pumps in the reefrhythm webgui, it should be displayed in mqtt explorer, right? Unfortunately it won't for me.

I somehow have the feeling that the reff rhythm can't connect with the mqtt brocker. I'm probably making a mistake somewhere.

i have it.

mqtt broker: homeassistant

im stupid, was testing broker adresses: core-mosquitto, core-mosquitto.hass.io and so on. Simply homeassistant

butch708 · May 30, 2024

Hello yury,

https://github.com/telenkov88/reefr...me-Assistant-Dosing-Pump-Control-Setup-Manual

Code:

Number for Amount
Navigate to Settings > Devices & Services > Helpers.
Click + Create Helper.
Select Number.
Name it Dosing Pump Remains
Select icon mdi:cup-water
Select display mode input field
Specify a range (e.g., minimum 0, maximum 1000).
Set the unit of measurement to mL.

Code:

- alias: "Start Dosing Pump"
  trigger:
    - platform: event
      event_type: state_changed
      event_data:
        entity_id: input_button.start_dosing_pump
  action:
    - service: mqtt.publish
      data_template:
        topic: "/ReefRhythm/<unique_id>/dose"
        payload: >
          {
            "id": 1,
            "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
            "amount": {{ states('input_number.dosing_pump_amount') | float }},
            "duration": {{ states('input_number.dosing_pump_duration') | float }}
          }
  mode: single

there is a a little error that cost me a while

you name the helper with dosing_pump_remains but it should be dosing_pump_amount

After changing that, i am able to dose over HA

Have a nice day,

butch708 · May 30, 2024

Thats the changed code, with ability to switch the pump id by a switch button.

Code:

- id: Start Dosing Pump
  alias: "Start Dosing Pump"
  trigger:
    - platform: event
      event_type: state_changed
      event_data:
        entity_id: input_button.start_dosing_pump
    - platform: state
      entity_id: input_boolean.change_pump
  action:
    - service: mqtt.publish
      data_template:
        topic: "/ReefRhythm/24587cda78dc/dose"
        payload: >
          {
            "id": {% if is_state('input_boolean.change_pump', 'on') %}2{% else %}1{% endif %},
            "direction": {% if is_state('input_boolean.dosing_pump_direction', 'on') %}1{% else %}0{% endif %},
            "amount": {{ states('input_number.dosing_pump_amount') | float(0) }},
            "duration": {{ states('input_number.dosing_pump_duration') | float(0) }}
          }
  mode: single

- id: Stop Dosing Pump
  alias: "Stop Dosing Pump"
  trigger:
    - platform: event
      event_type: state_changed
      event_data:
        entity_id: input_button.stop_dosing_pump
  action:
    - service: mqtt.publish
      data_template:
        topic: "/ReefRhythm/24587cda78dc/stop"
        payload: >
          {"id": {% if is_state('input_boolean.change_pump', 'on') %}2{% else %}1{% endif %},}
  mode: single

yury88 · May 31, 2024

Hello Community,

As our project continues to grow and evolve, we strive to make it easier for everyone—users, contributors, and enthusiasts alike—to access, share, and contribute knowledge. With this goal in mind, I've made a significant update to how our project's wiki is managed.

Why the Change?

Previously, the wiki was directly tied to our main project repository. This setup limited the ability to collaboratively edit and improve the wiki without granting broader access than might be necessary or desirable. To foster a more collaborative environment and streamline the contribution process, I have moved the wiki to its own dedicated repository.

Benefits of a Dedicated Wiki Repository:

Easier Collaboration: Contributors can now directly edit, fix typos, add content, and refine existing documentation without needing access to the main codebase. This lowers barriers to entry for new contributors and allows for quicker updates and improvements.
Enhanced Control and Security: By separating the wiki from the main repository, we maintain better control over who can modify our code versus our documentation. This distinction ensures that contributions can be managed effectively and securely.
Focused Contributions: Contributors can focus solely on improving documentation without the overhead of understanding the entire code repository setup. This makes it particularly easy for those who specialize in technical writing or educational content to get involved.

I excited to invite our verified community members to become collaborators on the new wiki repository. Whether you're correcting a typo, adding a new tutorial, or sharing your project setup, your knowledge helps us all. If you're interested in contributing, please reach out to me to get involved.

butch708 · May 31, 2024

Cool, i am in, if you let me

z9m - Overview

z9m has one repository available. Follow their code on GitHub.

github.com

yury88 · May 31, 2024

butch708 said:
Cool, i am in, if you let me

z9m - Overview

z9m has one repository available. Follow their code on GitHub.

github.com

Welcome, invitation pending.

And actually, if you are playing with HA to use the same "card" for multiple pumps, I just added some useful settings to the to the publication in MQTT:

So topic /ReefRhythm/<unique id>/pump_settings contains settings:
"names" - pump names
"number" - number of pumps
"inversion" - inversion settings for pumps(0= not enabled)
"current" - current settings in mA

{
"current": [ 600, 800,1000, 1200, 1600,1800, 2000, 200, 400 ],
"names": [ "NO3", "PO4", "Ca", "KH", "Mg", "Iron", "Iodide", "Manganese", "Vinegar" ],
"number": 1,
"inversion": [ 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
}

This is a develop build that can be installed by putting url on OTA page:

https://github.com/telenkov88/reefrhythm-smartdoser/releases/download/v1.1.18-develop-20240531-04b1cef/micropython.bin

Mostly I'm finished working on it and now verifying stability on long run:

- Notification refactoring- separate setting for Telegram/Whatsapp Notifications.
- Extended setting publications for MQTT
- Fixing some known bugs

yury88 · May 31, 2024

butch708 said:
I'm too stupid to set up mqtt. Maybe it would be a good idea to test the connection to mqtt server in the webgui.?

Yep, possible.

But before I want to make code refactoring. Some people not happy about code quality.
And its reasonable, project becomes too big to leave everything as is.
After refactoring more feature will follow.

And actually I'm going to add DC("Poor Man edition"

) and "standard" stepper drivers support.
Mostly because I want to play with this tiny GROTHEN peristaltic pumps. Originally they are DC(1.5ml/min rated), but I made mod and install stepper motors:

butch708 · Jun 1, 2024

hello,

It would be cool if we could store the pH value of our liquids in the settings. This would be interesting for later automation and calculations of the dosing quantity.

yury88 · Jun 3, 2024

butch708 said:
hello,

It would be cool if we could store the pH value of our liquids in the settings. This would be interesting for later automation and calculations of the dosing quantity.

What transport do you prefer to use to transmit sensor values to the controller?

The easiest solution is to subscribe it to the MQTT topic with a sensor value.
But if you have a MQTT broker, usually you have a server where you can control dosing logic...

Some of this functionality will be added because I have plans to extend the project with PH Controller.
Actually full-assembled custom pcb board for this project is laying next to me right now)
So sensor values will be automatically shared via the ESP-NOW WiFi protocol. But there will be some fail-protection logic, like turning off the pump if the value exceeds PH 8.7.

Danchik · Jun 3, 2024

yury88 said:
Oh, my bad- its a bug!
Thank you for reporting.
Already fixed in v0.9.5

You can upgrade firmware pushing the "starting upgrade" button on OTA page.
Give it some time like 10min to upgrade and than restart the page
And do not forget to to push "cancel rollback" on OTA page after firmware upgrade.

<hostname>.local will start working again after upgrade.

I just noticed that .local doesn't work through my cell phone, only through my home computer.
I tried it through the Google Chrome browser.

Or is it just me...?

yury88 · Jun 3, 2024

Danchik said:
I just noticed that .local doesn't work through my cell phone, only through my home computer.
I tried it through the Google Chrome browser.

Or is it just me...?

Phone model/firmware?

Danchik · Jun 3, 2024

yury88 said:
Phone model/firmware?

Samsung Galaxy A5 (2016) sm-a510f / Android 7.0

butch708 · Jun 4, 2024

yury88 said:
What transport do you prefer to use to transmit sensor values to the controller?

The easiest solution is to subscribe it to the MQTT topic with a sensor value.
But if you have a MQTT broker, usually you have a server where you can control dosing logic...

Some of this functionality will be added because I have plans to extend the project with PH Controller.
Actually full-assembled custom pcb board for this project is laying next to me right now)
So sensor values will be automatically shared via the ESP-NOW WiFi protocol. But there will be some fail-protection logic, like turning off the pump if the value exceeds PH 8.7.

I have to think again about what would be the best way. I actually wanted to do the later calculations directly via HomeAssistant.

I already have a ph-ec-temp monitoring kit in home assistant, this is from microfire. What kind of one do you have?

I followed your
User Guide for Setting Up MQTT Sensors in Home Assistant

configuration.yaml

Code:

sensor: !include sensors.yaml
mqtt:
  sensor:
    - name: "ph_minus"
      state_topic: "/ReefRhythm/24587cda78dc/pump1"
      value_template: "{{ value_json.remain }}"
      unit_of_measurement: "ml"
      icon: "mdi:cup"
      json_attributes_topic: "/ReefRhythm/24587cda78dc/pump1"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}"

    - name: "ph_plus"
      state_topic: "/ReefRhythm/24587cda78dc/pump2"
      value_template: "{{ value_json.remain }}"
      unit_of_measurement: "ml"
      icon: "mdi:cup"
      json_attributes_topic: "/ReefRhythm/24587cda78dc/pump2"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}"

sensors.yaml

Code:

- platform: template
  sensors:
    ph_minus_pump1_dose:
      friendly_name: "PH-Minus Dosierung"
      icon_template: "{{ 'mdi:water-pump' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_minus_pump1', 'dose') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose"
    ph_minus_pump1_storage:
      friendly_name: "PH-Minus Vorrat"
      icon_template: "{{ 'mdi:cup' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_minus_pump1', 'storage') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage"
    ph_plus_pump2_dose:
      friendly_name: "PH-Plus Dosierung"
      icon_template: "{{ 'mdi:water-pump' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_plus_pump2', 'dose') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose"
    ph_plus_pump2_storage:
      friendly_name: "PH-Plus Vorrat"
      icon_template: "{{ 'mdi:cup' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_plus_pump2', 'storage') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage"

i get some errors in homeassistant.log

Code:

2024-06-04 08:31:00.108 ERROR (MainThread) [homeassistant.components.sensor] Platform template does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose is already used by sensor.ph_minus_pump1_dose - ignoring sensor.ph_plus_pump2_dose
2024-06-04 08:31:00.109 ERROR (MainThread) [homeassistant.components.sensor] Platform template does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage is already used by sensor.ph_minus_pump1_storage - ignoring sensor.ph_plus_pump2_storage
2024-06-04 08:31:01.687 ERROR (MainThread) [homeassistant.components.sensor] Platform mqtt does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }} already exists - ignoring sensor.ph_minus

yury88 · Jun 4, 2024

dev build v1.1.23

Release Release v1.1.23-develop-20240604 · telenkov88/reefrhythm-smartdoser

Commits 698f33b: notification refactoring (Iurii Telenkov) 84df14c: fetch changes from master (Iurii Telenkov) b75ddaf: Notifications refactoring (Iurii Telenkov) 866eec4: bump version 1.16 (Iurii...

github.com

OTA link for installation:

https://github.com/telenkov88/reefrhythm-smartdoser/releases/download/v1.1.23-develop-20240604-1e0c75e/micropython.bin

Mostly, it's a code refactoring of MQTT and notifications to stabilize everything on high load.

But MQTT got some small updates:
1)After connection or reconnection, the controller will automatically publish a "fake" dose with a volume of 0 ml.

{"dose": 0, "id": 1, "remain": 2500, "storage": 2500, "name": "NO3"}

It is needed to update the storage remaining on the MQTT server after reboots, for example.
It's useful to keep UI elements in HA up-to-date after restarts

2)"pump_settings" topic renamed to "settings":

{"storage": [2500, 0, 0, 0, 0, 0, 0, 0, 0], "names": ["NO3", "PO4", "Ca", "KH", "Mg", "Iron", "Iodide", "Manganese", "Vinegar"], "number": 1, "current": [600, 800, 1000, 1200, 1600, 1800, 2000, 200, 400], "inversion": [0, 0, 0, 0, 0, 0, 0, 0, 0]}

yury88 · Jun 4, 2024

butch708 said:

I have to think again about what would be the best way. I actually wanted to do the later calculations directly via HomeAssistant.

I already have a ph-ec-temp monitoring kit in home assistant, this is from microfire. What kind of one do you have?

I followed your
User Guide for Setting Up MQTT Sensors in Home Assistant

configuration.yaml

Code:

sensor: !include sensors.yaml
mqtt:
  sensor:
    - name: "ph_minus"
      state_topic: "/ReefRhythm/24587cda78dc/pump1"
      value_template: "{{ value_json.remain }}"
      unit_of_measurement: "ml"
      icon: "mdi:cup"
      json_attributes_topic: "/ReefRhythm/24587cda78dc/pump1"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}"

    - name: "ph_plus"
      state_topic: "/ReefRhythm/24587cda78dc/pump2"
      value_template: "{{ value_json.remain }}"
      unit_of_measurement: "ml"
      icon: "mdi:cup"
      json_attributes_topic: "/ReefRhythm/24587cda78dc/pump2"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}"

sensors.yaml

Code:

- platform: template
  sensors:
    ph_minus_pump1_dose:
      friendly_name: "PH-Minus Dosierung"
      icon_template: "{{ 'mdi:water-pump' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_minus_pump1', 'dose') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose"
    ph_minus_pump1_storage:
      friendly_name: "PH-Minus Vorrat"
      icon_template: "{{ 'mdi:cup' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_minus_pump1', 'storage') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage"
    ph_plus_pump2_dose:
      friendly_name: "PH-Plus Dosierung"
      icon_template: "{{ 'mdi:water-pump' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_plus_pump2', 'dose') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose"
    ph_plus_pump2_storage:
      friendly_name: "PH-Plus Vorrat"
      icon_template: "{{ 'mdi:cup' }}"
      unit_of_measurement: "ml"
      value_template: "{{ state_attr('sensor.ph_plus_pump2', 'storage') }}"
      unique_id: "doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage"

i get some errors in homeassistant.log

Code:

2024-06-04 08:31:00.108 ERROR (MainThread) [homeassistant.components.sensor] Platform template does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_dose is already used by sensor.ph_minus_pump1_dose - ignoring sensor.ph_plus_pump2_dose
2024-06-04 08:31:00.109 ERROR (MainThread) [homeassistant.components.sensor] Platform template does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}_storage is already used by sensor.ph_minus_pump1_storage - ignoring sensor.ph_plus_pump2_storage
2024-06-04 08:31:01.687 ERROR (MainThread) [homeassistant.components.sensor] Platform mqtt does not generate unique IDs. ID doser_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }} already exists - ignoring sensor.ph_minus

you need to set unique ID for each sensor.
sensor:
- name: "ph_minus"

unique_id: "doser_ph_minus_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True) | lower }}"

- name: "ph_plus"
unique_id: "doser_ph_plus_{{ value_json.name | replace(' ', '_') | regex_replace('[^a-z0-9_]', '', ignorecase=True)

butch708 · Jun 4, 2024

I want to create a new page on the wiki these days, for setting up a two head(ph+,ph-) ph doser. Can you create a folder for 3d printing files and do i have the permission to upload files?

do you have discord or similar?

yury88 · Jun 4, 2024

butch708 said:
I want to create a new page on the wiki these days, for setting up a two head(ph+,ph-) ph doser. Can you create a folder for 3d printing files and do i have the permission to upload files?

do you have discord or similar?

Wiki mostly supports only graphical(video also) file uploads.
3D printing files are better to store on some specialized portals like thingiverse.com.
I suggest just include a thingiverse link to your project on wiki

And no, I don't have discord, bug mostly I often online here)
And all Github reciprocity has "Discussion" function

telenkov88 ReefRhythm-Wiki · Discussions

Explore the GitHub Discussions forum for telenkov88 ReefRhythm-Wiki. Discuss code, ask questions & collaborate with the developer community.

github.com

Davi Corrêa · Jun 22, 2024

What wonderful work. Congratulations! And I thank you in advance for what you are doing.
One of my pumps had a problem and while researching I found your project. I liked it so much that I've already imported all the hardware, which should arrive this week, and I'm going to adopt your project as the standard for my reef. I'll have a few pumps ahead.
But I made a big mistake, my controllers are the SERVO42D CAN bus... I even looked at the code to see if I could adapt, honestly I was counting on that, but I realized that I don't have enough knowledge of the language and the platform.
Do you foresee any additions soon for control via CAN bus?
My CAN controller is the MCP2515 via SPI.

And once again, congratulations on the wonderful work.

Davi Corrêa · Jun 22, 2024

Davi Corrêa said:
What wonderful work. Congratulations! And I thank you in advance for what you are doing.
One of my pumps had a problem and while researching I found your project. I liked it so much that I've already imported all the hardware, which should arrive this week, and I'm going to adopt your project as the standard for my reef. I'll have a few pumps ahead.
But I made a big mistake, my controllers are the SERVO42D CAN bus... I even looked at the code to see if I could adapt, honestly I was counting on that, but I realized that I don't have enough knowledge of the language and the platform.
Do you foresee any additions soon for control via CAN bus?
My CAN controller is the MCP2515 via SPI.

And once again, congratulations on the wonderful work.

Only now did I see that the ESP32 already has an integrated CAN controller. So ignore the part where I mention the MCP2515 controller, although I have found "micropython MCP2515" libraries for the ESP32 (and don't know how to use them lol).
And here is the datasheet for CAN communication, if you might be interested.
https://github.com/Macrobase-tech/MKS-SERVO57D/tree/main/User Manual

Thank you very much in advance

JMaccaz · Jun 29, 2024

Hey mate this looks like an awesome project and I am planning to set one of these dosing pumps up.

I was looking at using one of these pumps for water changes and wanted to know if it was possible to use the kamoer stepper motors/pumps like the Kcm pump with this project as they have a bit higher of a flow rate.

Would love to use the nema17 but unfortunately can’t find a dosing head that will give a higher enough flow.