title: node red firmata arduino connection lost so often
body: <p>I am trying to read a potentiometer data over firmata with node-red. potentiometer connects to analog pin of arduino and arduino is connect to raspberry pi 4 over usb.</p>
  
  <p>Program runs good and i can get the data from arduino but connection lost very often. Connection establish after 1 second but it cuts off so often.</p>
  
  <p>What can i do to correct this?</p>
  
  <p>The transfer rate is so high and i don't need a speed like this. 
  Can i decrease the connection speed? and how can i do that?
  Or is there a harware solution in there? i mean a capacitor or a resistance connection to sensor can deal the problem?</p>