Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — ...

LPG gas sensor module's DO pin is directly connected to pin 18 (A4) of Arduino and Vcc and GND are connected to Vcc and GND of arduino. LPG gas sensor module consist a MQ3 sensor which detects LPG gas ...

void updateLength (uint16_t n); Change the length of a previously-declared Adafruit_NeoPixel strip object. Old data is deallocated and new data is cleared. Pin number and pixel format are unchanged.

10k pots are the defacto standard for Arduino imputs, with the wiper connected to the analogue input pin, one end connection to 0V and the other to +5V. As set up by the Ardunio IDE, the ADCs use the ...