Minolta A-mount Lenses on A7 with AF without LA-EA4?

Yes, If you have Techart LM-EA7 (aka Techart Pro Leica M) and an appropriate lens adapter for the A-mount lens you can make all the A-mount lenses with autofocus ability.  The question is how to get this lens adapter which can be fit for Techart.  Checking the Techart official site and there is no such adapter.

First to find an A-mount to Leica M mount adapter on Ebay. I found one even this one is not compatible with LM-EA7 and it may not focus to infinity on some lenses.

IT IS the one which can be modified. I am not sure the other mounts from other manufacturers can do that.

Due to the position of motor housing under the Techart LM-EA7, this adaptor cannot be mounted on it due to the aperture ring.  So, I remove the aperture ring and see if I need to mill out more metal to fit this on LM-EA7. Luckily, once the ring removed the adaptor can fit to LM-EA7 perfectly. It saves me a lot of works.

Now the A-mount lens can be fit to the LM-EA7 without the aperture control........at this moment.  Once the aperture ring removed you may find there is a metal rod which attached to the inner aperture coupler ring.  This rod is screwed on with M2 thread.  This rod is too short so it cannot be used to control the aperture. If it is long enough the aperture can be easily control by the thumb from the left hand.  

I got some black nylon M2 screws and nuts. By adjusting the size of the nut which fit to the slot by sanding and make it tidily fit with reasonable friction. The aperture can hold by itself.

Put all the parts together and all done.  Here is the final look.

And here is picture showing the mount on A7II

My 35mm f/1.4 can focus to infinity as well as the 70-210mm f/4 and 28-85mm f/3.5-4.5 can do. the adapter still can be milled thinner to adjust the infinity point further.

Except you own many exotic Minolta A-mount lenses, it is the most cost effective way to adopt the old lenses on A7.