SC500W v3 - Curtain / Blind controller

[Sineos]

trafficstars

Link: https://www.aliexpress.com/item/1005002710349987.html Module: WB2S

Got this module and was pretty set back as I realized Tasmota was a no go. After some searching, found these great efforts here. Is there any chance to get this supported? Many thanks in advance.

[openshwprojects]

It should be very easy, but the thing is, I don't have any such modules and I don't have any curtains with motors for testing.

Do you know C basics and would like to help out with the practical side of things?

Was it using ESP before?

EDIT: I could try following this guide: https://tasmota.github.io/docs/Blinds-and-Shutters/#operation and make it operate in the same way, but still, I wouldn't be able to test it myself

[Sineos]

Thanks for coming back to this.

Do you know C basics and would like to help out with the practical side of things?

I'm not much of a developer. Bit of Node.js experience. Doing simple things works and of course, I'd be willing to support.

Was it using ESP before?

Actually, no clue. There is https://www.aliexpress.com/item/1005001512832665.html, which I think is the predecessor and should be Tasmota able. Looks like they switched to their own development on v3

I could try following this guide: tasmota.github.io/docs/Blinds-and-Shutters/#operation and make it operate in the same way, but still, I wouldn't be able to test it myself

This would be great. From my understanding, key is that never ever both outputs are high at the same moment. This would kill the motor.

[Sineos]

I got hold of a v2. Indeed it is a ESP8285. The MCU module reads TYWE2S. The silkscreen and model number on the PCB (SC500WSC-KP3211) is identical. Looks like they just swapped the TYWE2S to a WB2S.

[Sineos]

Flashed OpenBK and it is working so far:

From my point of view, a minimal Roller Shutter support would be:

• Make sure both relays are off at boot (already possible --> Configure Startup)
• Create an interlocking function: Before Relay 2 goes high, Relay 1 needs to be low and vice versa
• Create a "TimeToClose" / "TimeToOpen" setting for positioning. Personally I do not need any highly sophisticated calibration function. Anyway easier to time this manually.
• Set / Return Position (0 - 100) via commands and MQTT

Many thanks in advance for considering.

[mkjustuk]

If I can help I'd like to, shutter/curtain support in OpenBeken would be a massive step. I have this unit and a motor and switches to test the whole setup.

This is a 2CH version, so has 4 relays and four switch lines.

Link: https://www.aliexpress.com/item/1005003661384708.html Module: CBU - BK7231N - 7ori

I have several Tasmotized ESP based units already and I'd agree with Sineos on the basic requirements above, if you can mirror the Tasmota shutter support it's really great.