Error logging to console a bit

src/err.rs

@@ -1,3 +1,4 @@
+#[derive(Debug, PartialEq, Eq)]
 pub enum RemotePicoError {
     ConnectionRefused,
     StreamWriteError,

src/main.rs

@@ -28,7 +28,10 @@ fn main() {
 
                 writeln!(log_file, "{}", vals_str.join(", ")).unwrap();
             }
-            Err(_) => writeln!(log_file, "E, E, E, E").unwrap(),
+            Err(e) => {
+                println!("Error connecting to pico: {:?}", e);
+                writeln!(log_file, "E, E, E, E").unwrap();
+            }
         }
     }
 }