In this illustration we will going to wire the 16×2 i2C lCD Screen with 4 channel relay to monitor each channel of the relay, please refer to this link if you need to know and understand how i2c works. Basically
Code Libraries
Raspberry Pi Libraries WiringPI is PIN based GPIO access library written in C for the BCM2835 an Arduino like code. WiringPi includes a commandline gpio which can be used to provide instruction to setup the GPIO pins. You can also
The Raspberry Pi Models and How to Address them
The Raspberry Pi Models and Version & the Difference. Lots of Makes, developers, hobbyist and engineers these days questioning what is the difference between Arduino & Raspberry. Even though both are made for solving difference problems. Raspberry Pi is a