Update README.md

2018-2_SystemProgramming/README.md

@@ -2,6 +2,17 @@ System Programming (2018 Fall)
 =============  
 * **Homework**
     * implemented simple device-driver in Linux with vim.
+    * Read and Write short characters with the device-driver.
 
 * **Team Project (Smart Bedroom)**  
-    * first
+    * We implemented smart bedroom with two Raspberry-Pi.
+    * One Raspberry-Pi is for controling the bed and the other is for controling the curtain on window.
+    * Two Raspberry-Pis are connected via socket communication in Linux.
+    * The list of sensors used is as follows.
+      * 1. DHT11 temp & humidity: It is used for adjusting sleep temperature optimally.
+      * 2. Gyroscope Sensor: It is used for checking whether the person lying in bed is really asleep.
+      * 3. Touch Sensors: It is used for checking whether the person lying in bed is really asleep.
+      * 4. LED(Light Emitting Diode): It is used for For mood-light.
+      * 5. Motor Sensor in curatin Raspberry-Pi: It is used for letting down curtains.
+      * 6. Motor Sensor in Bed Raspberry-Pi: It is used for raising the bed at the alarm time to wake up.
+      * 7. Buzzer Sensor: It is used to sound an alarm at the time to wake up.