ReefRhythm - Advance Stepper Motor Controller with OpenSource

[yury88]

I see auto water changes in my future.

Yep, can be done. You even can control 2 pump heads with one 0-10V port if you want.
Just need to choose proper peristaltic head with enough flow and motor with enough torque.

 

[yury88]

Kalk solution also benefits from a continuous dosing strategy.
Would it be feasible to dose 10ml/hour or even lower volumes? I believe this would be enough to dose kalk even in small pico-reefs.

10ml/h its 10ml/60 min=0.16ml min.
With this pump, at the lowest flow is around ~0.1ml/min, so you can even run it in continuous mode.

But you can go even lower. Because you can run half of the minute using a schedule feature.
For example, test dose is 0.05ml(1 drop) in 30sec from 10:00-11:00 with frequency 60.
The pump will work 30sec every minute and on average it will be 0.05*60= 3 ml/hour.

And for example, these heads come with 4*2mm tubes. I think it can be replaced with 4*1mm tubes and the slowest flow will go down to 0.025ml/min. 1.5ml/h in continuous mode!

 

[zerokewl]

Yep, can be done. You even can control 2 pump heads with one 0-10V port if you want.
Just need to choose proper peristaltic head with enough flow and motor with enough torque.

How do you control 2 dosers on 1 0-10v

 

[yury88]

How do you control 2 dosers on 1 0-10v

In the case of water change, it can be two dosing heads. One for drainage, another to fill the tank with new saltwater.
So you can choose both pump signal sources from the same pin of the ESP32.
So both pumps will work synchronously with the same flow rate (ml/min)

 

[yury88]

Hi everyone.
I think before MQTT in v0.8, I'll roll out a few minor updates with support for some optional but necessary things:
1) Working in AP and WiFi mode simultaneously. Accordingly, if you need to switch the controller to another Wi-fi network, it will be possible to do it without a computer.
Currently you need to connect it to PC and edit config/wifi.json in soft like Thronny.
There is a platform limitation here: when WiFi and AP simultaneously works, the DHCP server does not work on AP, so you need to set IP manually.
2) Work in AP-only mode.

3) It follows from point 2 that it is necessary to take some time for the work of the schedule. This is mandatory. Now the work on the schedule is not even turned on until the time is synchronized in obvious reason.
4) I will try to support the Captive Portal feature so that when initializing and connecting to the AP, there is an automatic opening of the page of the controller.


Therefore, I will add support the RTC module for offline work.
I have a DS3231 module, so I think about it and add it.
I think the device will automatically pick up whether it is connected or not, so its will be an option to set time from UI.

I will also add some settings:
1) Analog control work period: 15/30/60/120 sec.
2)Setting the working currents of the motors. For 23mm, for example, it is optimal 1A, 30mm -1.2A, and 40mm -1.5A. The driver itself can go up to 3A.
Now there is a hard-coded 1A.