1 Relay 1 sensor self watering system for Arduino Uno or Nano Moisture Sensor Aout goes to Arduino pin A0 Moisture Sensor GND goes ground Moisture Sensor VCC goes +5V ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one ...

All relay states switch off and the system changes it's state to 'emergency'. In emergency state (RED LED on) the Arduino waits for another 100 seconds for a valid command to leave emergency state.

Relay Driver Circuit Explanation: In this 4-Channel Relay Driver Circuit we have used an optocoupler whic his triggered by active LOW signal, to trigger the NPN transistor which further drives the ...

The programmable logic controller is fitted with 32 Inputs offering : 16 x digital 4-30V, 8 x analog 0-10V, 4 x analog 0-5V, 4 x analog 4-20mA) and 20 Outputs (8 x relay 250V/5A, 2 x open ...

The HID Relay takes the form of a small adapter that has been built using an Arduino Pro Mini, a Bluetooth module, a USB host shield together with a few ...