Update S4_EMG.ipynb

Made some changes for better sampling frequency

Author: Janne Luijten

S4_EMG/S4_EMG.ipynb

@@ -114,8 +114,8 @@
     "from adafruit_ads1x15.ads1x15 import Mode\n",
     "\n",
     "# Create the ADC object, for the ADS1115. \n",
-    "# Set Mode to continuous for higher sampling frequency\n",
-    "ads = ADS.ADS1115(i2c, mode=Mode.CONTINUOUS)"
+    "# Set Mode to continuous for higher sampling frequency and specify data_rate\n",
+    "ads = ADS.ADS1115(i2c, mode=Mode.CONTINUOUS, data_rate=860)"
    ]
   },
   {
@@ -187,8 +187,8 @@
     "import time\n",
     "\n",
     "# Create the ADC object, for the ADS1115. \n",
-    "# Set Mode to continuous for higher sampling frequency\n",
-    "ads = ADS.ADS1115(i2c, mode=Mode.CONTINUOUS)\n",
+    "# Set Mode to continuous for higher sampling frequency and specify data_rate\n",
+    "ads = ADS.ADS1115(i2c, mode=Mode.CONTINUOUS, data_rate=860)\n",
     "\n",
     "# Print the raw values and the voltage\n",
     "while True:\n",
@@ -197,7 +197,7 @@
     "        chan = AnalogIn(ads, ADS.P0)\n",
     "        value = chan.value\n",
     "        voltage = chan.voltage\n",
-    "        time.sleep(0.005)\n",
+    "        time.sleep(0.005) #adjust to alter the speed of the loop\n",
     "        \n",
     "        print('\\r\\n Value = %4d , Voltage = %.4f '%(value,voltage))\n",
     "        \n",