Circuit diagram for this Analog Speedometer is simple ... 16x2 LCD is connected at following analog pins of Arduino. A 2.2k resistor is used to set the brightness of LCD. An IR sensor module, which is ...

GND Should be connected to the ground of the Arduino. An IR proximity sensor works by ... LED turns on when the circuit is triggered. This board also has a comparator Op-amp that is responsible for ...

The aim of this project is to develop a circuit that can count the number ... A microcontroller board with 14 digital I/O pins and 6 analog input pins. It is programmable via the Arduino IDE. Each IR ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

The automatic light system, based on Arduino Uno and IR sensors is designed to automatically switch the washroom light on and off, operating on AC mains. Whenever a person enters the washroom, the ...

The LDR is connected to a voltage divider circuit to produce an analog signal proportional to the light intensity. The analog signal is read by the Arduino via pin A0. The program compares the sensor ...

The robot uses a whopping 32 IR sensors to follow a black line across a concrete workshop floor, adjusting its path using a steering motor salvaged from a power wheelchair. An Arduino Mega Pro ...

The digital signal output to be detected (usually marked as DO in the module) is applied to D2 input of the Arduino. Analog output (marked as AO) from the module is not used here. Sensor-head of ...