Push Switch (S1) input point is at pin 9 of the Arduino. Connecting the display pins directly to Arduino I/O pins is not a good practice. For testing purpose only one 330 Ohm resistor (R2) is added ...

It features over 5,400 projects, ranging from simple tutorials — like using a soil moisture sensor with Arduino — to more complete guides like building a Bluetooth-controlled car.

With extensive tutorials ( 20 Chapters covering over 80 topics ) + 20 DIY projects included to show you how, CleO35 ( the 3.5in display version ) allows both hobbyists and professionals alike to ...