A microprocessor is great for many tasks, but image capture and display task it greatly. This 'shield' is actually a co-processor and performs image capture and display under the command of the microprocessor. The design is both conceptually and practically nice -- the result is a compact and quite usable unit. Along with a Nano or Nano clone, one of many 320x240 SPI TFT displays complete the unit. The shield has a separate USB power jack, but this is common for all high-power graphics displays. The designer has created a good Arduino library, and has posted tutorials. The documentation is good, but I would suggest some curation/summary of all of the available material. The designer has other similar modules based on the FT810, so it is likely that this shield uses such a circuit, but the library allows developers to avoid low-level interface code.
Good product works as expected, quick shipping. I am using the shield with boards providing Arduino compatible headers (ex. Raspberry CM3 developer board, Toradex Aster board) and with all these boards works fine.
Response from ElecDev | Dec. 1, 2019
Thanks for your feedback! Product quality is one of the top priorities. I will be glad to offer you new products for the development of automated systems. Best wishes!