Doc and tweaks.

Author: OlivierLD

README.md

@@ -2,7 +2,14 @@
 
 #### Java code and wirings for the Raspberry Pi, featuring reusable libraries and snippets
 
-> This project was started in 2015.
+> This project was started in 2015.  
+> Among several modules, some emerged. We clearly have two major threads:
+> - Actuators and Sensors (look into `raspberry-io-pi4j` and others)
+> - Navigation utilities (look into `raspberry-sailor`, `NMEA-multiplexer` and others)
+> 
+> Those two above can interact. For example, navigation software can use sensors.  
+> And again, this project is not limited to those two threads.
+
 ---
 Main keywords:
 - Raspberry Pi

record.sh

@@ -2,20 +2,16 @@
 # Extract temperature and voltage from sysinfo.sh
 # Use it like ./record.sh >> recording.txt
 LOOP=true
-while ("${LOOP}" == "true")
-do
+while [[ "${LOOP}" == "true" ]]; do
     ./sysinfo.sh | grep -E 'temp=|volt=' > snap.txt
     #
-    while read line
-    do
+    while read line; do
         # echo $line
-        if [[ "$line" == *"temp"* ]]
-        then
+        if [[ "$line" == *"temp"* ]]; then
             temp=${line#*=}
             temp=${temp::-2}
             # echo -e "Temp: ${temp}"
-        elif [[ "$line" == *"volt"* ]]
-        then
+        elif [[ "$line" == *"volt"* ]]; then
             volt=${line#*=}
             volt=${volt::-1}
             # echo -e "Volt: ${volt}"