Arduino Nano is reading data over SPI from MCP300 (10-bit ADC), Nano adds to the data the time stamp from Timer1 and it is all sent to PC with speed of 69-70us each sample (1 sample = timestamp plus ...

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // NTP Servers: IPAddress timeServer(132, 163, 4, 101); // time-a.timefreq.bldrdoc.gov // IPAddress timeServer ...