My self-made Digirig Mobile is ready. From PCB board printing to original parts procurement to welding, as well as the design and production of the 3D shell, I only used my spare time to do this, which took about three weeks. Now it works fine. The radio equipment I use is IC-2730A, and I will consider trying CAT control later. I will continue to update the post after my serial control line is ready. Thanks for K0TX.