Control Arduino from Android using Node-RED and Johnny-Five
Tutorial for controlling Arduino or other IoT devices from Android phones using Johnny-Five and Node-RED.
The connection to the board can be local (USB OTG) or remote (TCP).
Keplerian Elements for Approximate Positions of the Major Planets Based on the paper written by E. M. Standish, Solar System Dynamics Group JPL/Caltech
https://ssd.jpl.nasa.gov/?planet_pos
Code is also available for download on GitHub
If you note unusual/inconsistent battery drain in the Samsung Galaxy S8, S9 and perhaps S10 phones and there is no obvious apps draining the energy in the system power consumption tool here is the fix: