The relay module will need 5V from Arduino to power up and will get input from four different digital pins of the Arduino. Now let’s connect the relay module to your home appliance. Take the positive ...

Flow Measurement: The flow sensor calculates the flow rate of water passing through it in liters per hour (L/hour). LCD Display: An LCD screen is used to display the current flow rate measured by the ...

If higher current loads are to be driven a PNP transistor can be added to the module's digital output. Here the addition of 2N3906 transistor controls an electro-magnetic relay (RL1) for driving ...

Note: This is an extension of the pump relay project found here. This is a student project for ENGR114 at Portland Community College. Using MATLAB and an Arduino connected over serial, we will switch ...

With the help of ‘If condition’, I write the first condition, if the moisture percentage goes below 10, then the Arduino will turn pin 3 to LOW and the pump will turn on ( our relay module uses the ...

In this blog, we will explore how a relay works, how to interface a single-channel relay with an Arduino Uno, and demonstrate a simple example of how to use the 5v relay module to control a lamp.

Arduino Uno (MOD1) 1: EM-18 RFID reader module (MOD2) 1: RFID tags/cards (125kHz) 4: ULN 2003 IC (IC1) 1: Water pump, 220V AC (Pump1 ) 1: ... The first relay drives the water/fuel pump motor and the ...