Implementation

Why use BINARY type to store a GUID ?

GUID is a 128-bit (16 bytes) integer number. 

In its canonical textual representation, GUID are represented as 32 hexadecimal digits, displayed in five groups separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters (32 hexadecimal characters and 4 hyphens).

For example: 79d266c1-ca54-4bc9-9b0e-4a988fa1b1dc

In this tutorial, we will see how to read analog value with RPi3 using an Analog/Digital Converter MCP3008.