println() in minimal example, added python i2c_bus comments

examples/01-Minimal/01-Minimal.ino

@@ -21,6 +21,6 @@ void setup()
 void loop()
 {
   // https://ufire.co/docs/uFire_EC/api.html#measureec
-  Serial.print((String) "mS/cm: " + ec.measureEC());
+  Serial.println((String) "mS/cm: " + ec.measureEC());
   delay(1000);
 }

library.json

@@ -14,7 +14,7 @@
       "maintainer": true
     }
   ],
-  "version": "1.2.1",
+  "version": "1.2.2",
   "frameworks": "arduino",
   "platforms": "*"
 }

library.properties

@@ -1,5 +1,5 @@
 name=Isolated EC Probe Interface
-version=1.2.1
+version=1.2.2
 author=uFire
 maintainer[email protected]
 sentence=Measure Electrical Conductivity, Total Dissolved Solids, and Salinity

python/RaspberryPi/basic.py

@@ -4,10 +4,10 @@
 # https://ufire.co/docs/uFire_EC/#raspberry-pi
 
 # For Raspberry Pi 3, 3 indicates the I2C-GPIO port
-ec = uFire_EC(3)
+# on Raspberry Pi 3, this is always 3 after following the above link's instruction
+# on Raspberry Pi 4, it can't be determined ahead of time
 
-# For Raspberry Pi 4, 7 indicates the I2C-GPIO port
-#ec = uFire_EC(7)
+ec = uFire_EC(i2c_bus=3)
 
 ec.measureEC()
 print("mS: " + str(ec.mS))

python/RaspberryPi/shell.py

@@ -5,11 +5,12 @@
 # https://ufire.co/docs/uFire_EC/#raspberry-pi
 
 # For Raspberry Pi 3, 3 indicates the I2C-GPIO port
-ec = uFire_EC(3)
-
-# For Raspberry Pi 4, 7 indicates the I2C-GPIO port
-#ec = uFire_EC(7)
+# on Raspberry Pi 3, this is always 3 after following the above link's instruction
+# on Raspberry Pi 4, it can't be determined ahead of time
+# from a terminal, type `ls /dev/i2c <tab>` after pressing <tab>, you should
+# get a listing of available I2C busses. 
 
+ec = uFire_EC(i2c_bus=3)
 
 class ECShell(cmd.Cmd):
     prompt = '> '