The Raspberry Pi is a credit card-sized computer capable of running full-fledged Linux distributions such as Raspberry Pi OS, ...

The Arduino Nano serves as the controller. The PIR motion sensor detects human movement and transmits data to the Arduino. The PIR sensor has three pins: VCC, GND, and OUT. A 5V single-pole, ...

This Arduino Uno setup can be powered by a 6F22 9V battery or other suitable power source, but it is up to you. The next piece of hardware is a dual-channel, low-trigger, 5V relay module. This relay ...

The diagram consists of an arduino,a relay, an lm35 sensor, an AC fan, and a plug. The temperature controlled fan circuit is very simple. The LM35 sensor has 3 pins VCC, GND and Analog output pin. The ...

Arduino-based device to control 24V relays as well as Bronkhorst IQFlow+ mass flow controllers ... capacity = (voltage/5)*100 e.g. 0V : 0% 0.1V : 2% 1V : 20% 2V : 40% 3V : 60% 4V : 80% 5V : 100% This ...

in our project, we will use it in Normally Open mode which means when the relay is switched off the circuit will be broken. The relay module will need 5V from Arduino to power up and will get input ...

Then connect the other wire from the electric plug to the relay’s NC terminal. Finally, connect the smaller pins to the Arduino using jumper pins. GND should go to GND, 5V to 5V, and Signal to pin 7.

For example, you could power an Arduino board through the 5V/3.3V/GND header on the RelayFi, and the Arduino can enable/disable relays as needed instead of using jumpers as shown in the photo below.

Simply, it’s an Arduino library for communicating with Modbus slaves over RS232/485 via RTU (remote terminal unit) protocol. In conclusion, the Modbus 2-channel 5V relay module is a very useful device ...