1749842195

CHANGELOG.txt

@@ -0,0 +1,8 @@
+Added RTC (https://www.adafruit.com/product/3013)
+NEO GPS Module
+    Wiring
+        Changed to 5v mode
+    U-Center-2 (https://www.u-blox.com/en/u-center-2)
+        Changed Baudrate UART1 to 921600 # 460800
+        Time Pulse Mode
+            Antenna Cable Delay set to the calculated 14ns

README.md

@@ -42,11 +42,16 @@
 	2. SSH Access
 	3. sudo permissions
 2. A timing specific GPS module, wired to the Raspberry Pi GPIOs:
-	1. GPS GND to RPi pin 6
-	2. GPS VIN to RPi pin 2 or 4
-	3. GPS PPS to RPi pin 12 (GPIO 18)
-	4. GPS RX to RPi pin 8
-	5. GPS TX to RPi pin 10
+	1. GPS GND to RPi Physical Pin 6 (GND)
+	2. GPS RX to RPi Physical Pin 8 (GPIO 14 / TX (UART))
+	3. GPS TX to RPi Physical Pin 10 (GPIO 15 / RX (UART))
+	4. GPS PPS to RPi Physical Pin 12 (GPIO 18)
+	5. GPS VIN to RPi Physical Physical 4 (5 volts)
+3. I2C RTC Module
+	1. RTC GND to Rpi Physical Pin 9 (GND)
+	3. RTC SDA to RPi Physical Pin 3 (GPIO 2 / SDA1 (I2C))
+	4. RTC RCL to RPi Physical Pin 5 (GPIO 4 / SCL1 (I2C))
+	5. RTC VCC to RPi Physical Pin 1 (3.3 volts)
 
 ### Install
 Clone the repo  
@@ -99,16 +104,13 @@ Upload ~/Garfana-Visualization.json to create dashboard
 **todo**
 * case
 * gps sma antenna adaptor
-* ntp server
-	* outside dial in
-		* cloudflare tunnel?
 * change gps settings
+	* use 5v
+	* adjust time delay to be closer to
 	* higher baudrate
 		1. 230400
 		2. 460800
 		3. 921600
-* uninstall desktop/etc
-	* change boot target to cli
 * README
 	* installer1-4.sh
 		* sudo apt update && sudo apt install -y git

installer3.sh

@@ -56,7 +56,7 @@ else
     sudo bash -c "echo '# the next 3 lines are for GPS PPS signals' >> /boot/firmware/config.txt"
     sudo bash -c "echo 'dtoverlay=pps-gpio,gpiopin=18' >> /boot/firmware/config.txt"
     sudo bash -c "echo 'enable_uart=1' >> /boot/firmware/config.txt"
-    sudo bash -c "echo 'init_uart_baud=115200' >> /boot/firmware/config.txt" # set baudrate here to
+    sudo bash -c "echo 'init_uart_baud=921600' >> /boot/firmware/config.txt" # set baudrate here to
 fi
 
 # check if pps-gpio is in /etc/modules already

installer4.sh

@@ -21,7 +21,12 @@ sudo usermod -aG dialout _chrony
 
 # reconfigure to normal mode
 echo "Starting configure script..."
-bash ./reconfig_full.sh ./working-normal-level-conf
+# quiet level
+# bash ./reconfig_full.sh ./reconfig_full.sh ./working-normal-level-conf
+# running (warn level) 
+# bash ./reconfig_full.sh ./working-warn-level-conf
+# debug/dev mode
+bash ./reconfig_full.sh ./working-debug-level-conf-dev
 
 # enable services
 echo "Enabling Services..."

notes-scratch-todo.txt

@@ -11,9 +11,7 @@ rtc module
         notes:
             https://serverfault.com/questions/1093101/chrony-hosting-time-with-rtc-as-authoritative-clock-on-an-air-gapped-isolated?__cf_chl_tk=G_sZX4ClltOv3fQJpH1q2a65tx4O2s_H_FObeBQ2UyU-1749831141-1.0.1.1-W0v5fl8cCrf0tIpB0pAqIb93L5MuoWeebiHm7iLGAlo
             https://stackoverflow.com/questions/49730407/how-to-do-one-shot-time-sync-using-chrony
-    add bat
-    wire up
-    do oneshot sync
+    do oneshot sync?
     script set every x seconds
         `sudo hwclock -r`
 change gps to use 5v if possible so rtc can use 3v

working-debug-level-conf-dev/gpsd

@@ -4,8 +4,8 @@
 DEVICES="/dev/ttyS0 /dev/pps0"
 
 # -n means start without a client connection (i.e. at boot)
-# -s 115200 is to set baud to 115200
-GPSD_OPTIONS="-n -s 115200"
+# -s 115200 is to set baud to 921600
+GPSD_OPTIONS="-n -s 921600"
 
 # also start in general
 START_DAEMON="true"