Raspberi Pi 4 , tiny computer with support 4K dual display monitor , choice of RAM from 1GB, 2GB, 4 GB, high speed Giga bit ethernet, with wireless networking and bluetooth support.
Faster more Powerfull
Better Processor ,Faster data transfer speed,with fanless and low power supply for this tiny single board computer. Have 2 Port USB 2 ports and USB 3 ports, make transfer data ten times more faster. With application for robot brains, smart home hub, media centre, networked AI core, factory controller, and much more. Works compatible with old Raspberi model.
Amherst Researchers from University of Massachusetts , Tauhidur Rahman and Forsaid Al Hossain has invented a portable surveillance device powered by machine learning - called FluSense- using Raspberi Pi 4 , which can detect coughing and sneezing crowd size in real time, then analyze the data directly monitor flu-like illnesses and influenza trends.
The FluSense creators say the new edge-computing platform, envisioned for use in hospitals, healthcare waiting rooms and larger public spaces, may expand the arsenal of health surveillance tools used to forecast seasonal flu and other viral respiratory outbreaks, such as the COVID-19 pandemic or SARS.(umass.edu)
Our secondary mirror
assembly would occasionally jerk. So we constructed a system using
eight BMA180 accelerometers, each attached to an ARMWeb SBC. 
