The Motion Blinds integaration schould be able to control both DD7002B Connector bridge as well as D1554 Mini Bridge.
You can not broadcast arbitrary RF signals using those bridges, they will only work with blinds that can be directly coupled to the bridge using the mobile application of the bridge.
The DD7002B bridge can control both Uni- and Bi-direction blinds (all new blinds are Bi-direction, only old models are Uni-direction).
The D1554 Mini Bridge can only control Bi-direction blinds.
Bi-direction blinds will actually transmit there position to the bridge over 433MHz and the bridge will sent a signal to HomeAssistant over ethernet. So they do provide actual acurate position information even after power cycles/reboots etc.
I wrote and maintain the Motion Blinds integration.
Please let me know if there are any problems/issues with the Motion Blinds integration (in combination with the DD7002B or D1554).
And if you appreciate my work please consider sponsoring my project: GitHub - starkillerOG/motion-blinds: Python library for interfacing with Motion Blinds