diff --git a/Makefile b/Makefile
index 719540d..89482d9 100644
--- a/Makefile
+++ b/Makefile
@@ -5,4 +5,4 @@ build-audio:
 	cd audio-logger && cargo build --release
 
 start-all:
-	cd scripts && start-all.sh
\ No newline at end of file
+	cd scripts && start-all.sh
diff --git a/audio-logger/.gitignore b/audio-logger/.gitignore
index 0cd831f..5b3eb2d 100644
--- a/audio-logger/.gitignore
+++ b/audio-logger/.gitignore
@@ -1,3 +1,3 @@
-taget
+target
 *.wav
 recordings
\ No newline at end of file
diff --git a/audio-logger/run_test.sh b/audio-logger/run_test.sh
index ebd0a94..a4fdc59 100644
--- a/audio-logger/run_test.sh
+++ b/audio-logger/run_test.sh
@@ -7,4 +7,4 @@ target/release/audio rec \
 	--sample-rate 44100 \
 	--channels 2 \
 	--buffer-size 1024 \
-	alsa \
\ No newline at end of file
+	alsa \
diff --git a/depth-logger/record-depth.py b/depth-logger/record-depth.py
index fb15d0f..284277d 100644
--- a/depth-logger/record-depth.py
+++ b/depth-logger/record-depth.py
@@ -7,7 +7,6 @@ import busio
 import adafruit_ads1x15.ads1015 as ADS
 from adafruit_extended_bus import ExtendedI2C as I2C
 from adafruit_ads1x15.analog_in import AnalogIn
-# from rpi_lcd import LCD
 
 parser = argparse.ArgumentParser(description='GPS Logger')
 parser.add_argument('-o', '--output', help='Output directory', required=True)
@@ -16,11 +15,6 @@ parser.add_argument('-b', '--bus', help='Custom i2c bus to use', required=False)
 
 args = parser.parse_args()
 
-# try:
-#     lcd = LCD(bus=2)
-# except OSError:
-#     lcd = None
-
 # Create the I2C bus
 if args.bus:
 	i2c_bus = args.bus
@@ -64,10 +58,6 @@ with open(filename, "w", 1) as f:
             # roundtemp = round(temperatureC, 2)
 
             print((str(voltage) + " V  ") + (str(depthM) + " m ") + (str(roundvolts) + " V  ") + (str(rounddepth) + " m"), flush=True)
-
-            # if lcd:
-            #     lcd.clear()
-            #     lcd.text((str(roundvolts) + " V  ") + (str(rounddepth) + " m"), 1)
             
             f.write(time.strftime("%Y-%m-%dT%H:%M:%S") + "," + str(roundvolts) + "," + str(rounddepth) + "\n")
 
diff --git a/docs/pi4wiring.png b/docs/pi4wiring.png
new file mode 100644
index 0000000..b150884
Binary files /dev/null and b/docs/pi4wiring.png differ
diff --git a/hydrophonitor-config.txt b/hydrophonitor-config.txt
index d0d4741..efff13c 100644
--- a/hydrophonitor-config.txt
+++ b/hydrophonitor-config.txt
@@ -2,21 +2,26 @@
 
 SAMPLE_RATE=44100
 CHANNELS=2
-BITRATE="192k"
+BITRATE=192k
+
+# in seconds
 BATCH_RECORD_LENGTH=60
 
 # GPS
 
+# in seconds
 GPS_INTERVAL=5
 
 # Depth
 
+# in seconds
 DEPTH_INTERVAL=5
 
 # Output location
 
-TRY_MOUNT_SSD=true
+# TODO
+#TRY_MOUNT_SSD=true
+OUTPUT_PATH=/home/pi/data
 
 HOME_PATH=/home/pi
 DEFAULT_OUTPUT_PATH=/home/pi/recordings
-OUTPUT_PATH=/home/pi/data
diff --git a/lcd-display/test_lcd.py b/lcd-display/test_lcd.py
deleted file mode 100644
index 4f17595..0000000
--- a/lcd-display/test_lcd.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from rpi_lcd import LCD
-from time import sleep
-
-lcd = LCD(bus=2)
-
-lcd.text('Hello World!', 1)
-lcd.text('Raspberry Pi', 2)
-lcd.text('is really', 3, 'center')
-lcd.text('awesome', 4, 'right')
-
-sleep(5)
-lcd.clear()
-
diff --git a/scripts/setup-audio.sh b/scripts/setup-audio.sh
index 48fa92a..f0c5e5b 100755
--- a/scripts/setup-audio.sh
+++ b/scripts/setup-audio.sh
@@ -13,18 +13,20 @@ card_number=$(aplay -l | grep -i usb | grep -i audio | cut -d ' ' -f 2 | cut -d
 # Change default audio device
 sudo touch /etc/asound.conf
 
-sudo cat << EOF | sudo tee /etc/asound.conf
-pcm.!default {
+config="pcm.!default {
   type plug
   slave {
-    pcm "hw:$card_number,0"
+    pcm \"hw:$card_number,0\"
   }
 }
 
 ctl.!default {
     type hw
     card $card_number
-}
-EOF
+}"
+
+if ! grep -q "$config" /etc/asound.conf; then
+  echo "$config" | sudo tee -a /etc/asound.conf
+fi
 
 cd $HOME/hydrophonitor/audio-logger && cargo build --release
diff --git a/scripts/setup-gps.sh b/scripts/setup-gps.sh
index f544018..3749a2e 100755
--- a/scripts/setup-gps.sh
+++ b/scripts/setup-gps.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 set -ex
 
@@ -17,4 +17,8 @@ sudo gpsd ${device} -F /var/run/gpsd.sock
 
 sudo sed -i "s|DEVICES=\"\"|DEVICES=\"${device}\"|g" /etc/default/gpsd
 
-sudo grep -qxF "START_DAEMON=\"true\"" /etc/default/gpsd || echo "START_DAEMON=\"true\"" | sudo tee -a /etc/default/gpsd
+config="START_DAEMON=\"true\""
+
+if ! grep -q "$config" /etc/default/gpsd; then
+  echo "$config" | sudo tee -a /etc/default/gpsd
+fi
diff --git a/scripts/setup-pressure-depth.sh b/scripts/setup-pressure-depth.sh
index a99db4d..6f5f9d8 100644
--- a/scripts/setup-pressure-depth.sh
+++ b/scripts/setup-pressure-depth.sh
@@ -1,16 +1,22 @@
-#!/bin/sh
+#!/bin/bash
 
 set -ex
 
+SDA_GPIO_PIN=10
+SCL_GPIO_PIN=11
+I2C_BUS=3
+
 echo "Setting up depth recording"
 
 # Enable i2c
 sudo raspi-config nonint do_i2c 0
 
 # Enable i2c on bus 3 and GPIO pins sda=23 and scl=24
-sudo cat << EOF | sudo tee -a /boot/config.txt
-dtoverlay=i2c-gpio,bus=3,i2c_gpio_sda=23,i2c_gpio_scl=24
-EOF
+config="dtoverlay=i2c-gpio,bus=$I2C_BUS,i2c_gpio_sda=$SDA_GPIO_PIN,i2c_gpio_scl=$SCL_GPIO_PIN"
+
+if ! grep -q "$config" /boot/config.txt; then
+  echo "$config" | sudo tee -a /boot/config.txt
+fi
 
 # Install packages
 sudo apt-get update && sudo apt-get install -y i2c-tools python3-pip
diff --git a/scripts/setup-raspberry-pi.sh b/scripts/setup-raspberry-pi.sh
index d889d26..b96dd71 100644
--- a/scripts/setup-raspberry-pi.sh
+++ b/scripts/setup-raspberry-pi.sh
@@ -2,8 +2,17 @@
 
 set -ex
 
-DIR_PATH=$HOME
 BOOT_DIR_PATH=/boot/hydrophonitor
+LOG_FILE=$BOOT_DIR_PATH/$(date +"%Y-%m-%dT%H-%M-%S")-setup-log.txt
+
+# Output from commands within the curly braces is written
+# to $LOG_FILE
+{
+DIR_PATH=$HOME
+
+echo
+echo "Starting setup, writing logs to $LOG_FILE"
+echo
 
 echo
 echo "### Update file paths in config and start script files"
@@ -25,6 +34,7 @@ echo
 
 mkdir -p "$DIR_PATH"
 cd "$DIR_PATH"
+rm -rf hydrophonitor
 cp -R $BOOT_DIR_PATH/ .
 
 # Install some development tools
@@ -63,19 +73,29 @@ echo
 
 cd "$DIR_PATH" && ./hydrophonitor/scripts/setup-pressure-depth.sh
 
+# Setup shutdown button
+echo
+echo "### Setup shutdown button"
+echo
+
+cd "$DIR_PATH" && ./hydrophonitor/scripts/setup-shutdown-button.sh
+
 # Set up cron job to start the recordings at boot
 echo
 echo "### Set up a cron job to start the recordings at boot"
 echo
 
-# USER=$(whoami)
 CRON_FILE=/etc/crontab
-CRON_COMMAND="@reboot root $DIR_PATH/hydrophonitor/scripts/start-all.sh 2>&1 > $BOOT_DIR_PATH/$(date +"%Y-%m-%dT%H-%M-%S")-log.txt"
+CRON_LOG_FILE="$BOOT_DIR_PATH/\$(date +\"%Y-%m-%dT%H-%M-%S\")-cron-log.txt"
+CRON_COMMAND="@reboot root $DIR_PATH/hydrophonitor/scripts/start-all.sh 2>&1 > $CRON_LOG_FILE"
 
 # Append command to cron file only if it's not there yet
-sudo grep -qxF "$CRON_COMMAND" $CRON_FILE || echo "$CRON_COMMAND" | sudo tee -a $CRON_FILE
+if ! grep -q "$CRON_COMMAND" "$CRON_FILE"; then
+  echo "$CRON_COMMAND" | sudo tee -a "$CRON_FILE"
+fi
 
 # Reboot
 echo
 echo "### Setup ready, run 'sudo reboot' to apply all changes"
 echo
+} 2>&1 | sudo tee $LOG_FILE
\ No newline at end of file
diff --git a/scripts/setup-rtc-1.sh b/scripts/setup-rtc-1.sh
index a3c9350..0f32df1 100755
--- a/scripts/setup-rtc-1.sh
+++ b/scripts/setup-rtc-1.sh
@@ -8,9 +8,11 @@ echo "Setting up the real time clock module, part 1"
 sudo raspi-config nonint do_i2c 0
 
 # Enable i2c rtc on the default i2c pins
-sudo cat << EOF | sudo tee -a /boot/config.txt
-dtoverlay=i2c-rtc,ds3231
-EOF
+config="dtoverlay=i2c-rtc,ds3231"
+
+if ! grep -q "$config" /boot/config.txt; then
+  echo "$config" | sudo tee -a /boot/config.txt
+fi
 
 # Disable fake-hwclock
 sudo apt-get remove -y fake-hwclock
@@ -18,11 +20,13 @@ sudo update-rc.d -f fake-hwclock remove
 sudo systemctl disable fake-hwclock
 
 # Load needed modules at boot
-sudo cat << EOF | sudo tee -a /etc/modules
-i2c-bcm2708
+config="i2c-bcm2708
 i2c-dev
-rtc-ds1307
-EOF
+rtc-ds1307"
+
+if ! grep -q "$config" /etc/modules; then
+  echo "$config" | sudo tee -a /etc/modules
+fi
 
 # Remove some lines from /lib/udev/hwclock-set
 sudo sed -i '/^if \[ \-e \/run\/systemd\/system \] ; then$/,/^fi$/d' /lib/udev/hwclock-set
diff --git a/scripts/setup-rtc-2.sh b/scripts/setup-rtc-2.sh
index 79d87a6..44cc833 100755
--- a/scripts/setup-rtc-2.sh
+++ b/scripts/setup-rtc-2.sh
@@ -4,15 +4,19 @@ set -x
 
 echo "Setting up the real time clock module, part 2"
 
-echo ds1307 0x68 | sudo tee /sys/class/i2c-adapter/i2c-1/new_device
+I2C_BUS=1
+
+echo ds1307 0x68 | sudo tee /sys/class/i2c-adapter/i2c-$I2C_BUS/new_device
 
 # Load RTC clock at boot
-sudo sed -i "s/^exit 0$//" /etc/rc.local
-sudo cat << EOF | sudo tee -a /etc/rc.local
-echo ds1307 0x68 | sudo tee /sys/class/i2c-adapter/i2c-1/new_device
+config="echo ds1307 0x68 | sudo tee /sys/class/i2c-adapter/i2c-$I2C_BUS/new_device
 sudo hwclock -s
-exit 0
-EOF
+exit 0"
+
+if ! grep -q "$config" /etc/rc.local; then
+  sudo sed -i "s/^exit 0$//" /etc/rc.local
+  echo "$config" | sudo tee -a /etc/rc.local
+fi
 
 # Set system time to Internet time
 echo "Restarting systmd-timesyncd to update system time"
diff --git a/scripts/setup-shutdown-button.sh b/scripts/setup-shutdown-button.sh
new file mode 100644
index 0000000..acdc2f0
--- /dev/null
+++ b/scripts/setup-shutdown-button.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -ex
+
+echo "Setting up shutdown button"
+
+config="dtoverlay=gpio-shutdown,gpio_pin=21,gpio_pull=up,active_low=1"
+
+if ! grep -q "$config" /boot/config.txt; then
+  echo "$config" | sudo tee -a /boot/config.txt
+fi
diff --git a/scripts/start-all.sh b/scripts/start-all.sh
index 28a4ccd..a1d395e 100755
--- a/scripts/start-all.sh
+++ b/scripts/start-all.sh
@@ -3,6 +3,10 @@
 # Print all commands to standard output
 set -x
 
+BOOT_DIR_PATH=/boot/hydrophonitor
+LOG_FILE=$BOOT_DIR_PATH/$(date +"%Y-%m-%dT%H-%M-%S")-startup-log.txt
+
+{
 SCRIPT_PATH=/home/pi/hydrophonitor/scripts
 
 # Export the configuration values
@@ -16,4 +20,5 @@ mkdir -p "$OUTPUT_DIR"/audio
 # Sleep for a little to wait for GPS and sound card to be ready
 sleep 10
 
-(export OUTPUT_DIR=$OUTPUT_DIR; $SCRIPT_PATH/start-audio.sh & $SCRIPT_PATH/start-gps.sh & $SCRIPT_PATH/start-pressure-depth.sh) >> "$OUTPUT_DIR"/log.txt 2>&1
+(export OUTPUT_DIR=$OUTPUT_DIR; $SCRIPT_PATH/start-audio.sh & $SCRIPT_PATH/start-gps.sh & $SCRIPT_PATH/start-pressure-depth.sh) 2>&1 | tee "$OUTPUT_DIR"/log.txt 
+} 2>&1 | tee $LOG_FILE
diff --git a/scripts/start-pressure-depth.sh b/scripts/start-pressure-depth.sh
index f24b4ac..a4b5506 100644
--- a/scripts/start-pressure-depth.sh
+++ b/scripts/start-pressure-depth.sh
@@ -2,10 +2,12 @@
 
 set -x
 
+I2C_BUS=3
+
 # Export the configuration values
 SCRIPT_PATH=/home/pi/hydrophonitor/scripts
 . $SCRIPT_PATH/export-config-values.sh
 
-OPTIONS="--output $OUTPUT_DIR --interval $DEPTH_INTERVAL --bus 3"
+OPTIONS="--output $OUTPUT_DIR --interval $DEPTH_INTERVAL --bus $I2C_BUS"
 
 cd $HOME_PATH/hydrophonitor/depth-logger && python record-depth.py $OPTIONS