In the last video #159 we explored a simple, battery-powered PIR project using an ATMega328P, as found in every Arduino UNO and Nano. Many times I was asked how I could detect the battery voltage and ...

Pin connection of Arduino Uno with the Motor driver are as follows: Here, we are using a 7.4 li-ion battery to power the whole circuit. You can use any battery type from 6-12 volt. To move the robot, ...

it just has an ultrasonic sensor and a servo motor connected to the Arduino UNO, and the whole setup is powered by a 9V battery. You can make the connections as shown in the circuit diagram, if you ...