send command from node red to arduino : <p>Good morning everyone,</p>

<p>I want to send command to my Arduino board by clicking on a button on node red dashboard</p>

<p>my Arduino sketch send sensor data to be visualised in the dashboard of the node red (using serial), the data is sent every 2 seconds automatically (in the loop of the Arduino code). What I want to know is if there is a possibility to create a button in the node red, when we click on it, it let the Arduino send sensor data, else no communication permitted.</p>

<p>Is it possible??</p>
