Merge pull request #58 from alanbjohnston/dev

Added sstv.sh which transmits SSTV from picamera using pysstv

groundstation/sstv.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+# script to transmit SSTV images
+
+echo
+
+echo "Script to transmit SSTV images from  ARISS Radio Pi using CubeSatSim Lite"
+
+echo 
+
+echo "Taking picture with Raspicam to Desktop raspicam.jpg"
+
+echo 
+
+raspistill -o ~/Desktop/raspicam.jpg -w 640 -h 496 > /dev/null 2>&1
+
+echo "Converting image to SSTV with pysstv (takes about 3 minutes)"
+
+echo 
+
+python3 -m pysstv --mode PD120 ~/Desktop/raspicam.jpg output.wav > /dev/null 2>&1
+
+echo "Transmitting PD120 SSTV image on 434.9 MHz using rpitx"
+
+echo 
+
+sudo systemctl stop rpitx
+
+sudo killall -9 rpitx > /dev/null 2>&1
+
+cat output.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo rpitx -i- -m RF -f 434.9e3 > /dev/null 2>&1
+