Bergen STEM Amateur Radio High Altitude Balloon (ARHAB)

https://cdn.sparkfun.com/datasheets/GPS/GP-735T-150203.pdf Note, this GPS is no longer used.

Links for LM386 audio amplifier and microphone used for sound experiment. https://lowvoltage.wordpress.com/2011/04/23/lm386-audio-amplifier/ https://lowvoltage.wordpress.com/2011/05/15/lm386-mic-amp/

Schematic for sound experiment on circuit protoboard. Click on it for better view.

The 66 channel LS20031 GPS is working. Pin connections: GPS                              Beaglebone Pin 1 - 3.3 V                 Pin_9-3 Pin 2 - RX                    Pin_9-21    UART2-TXD Pin 3 - TX                    Pin_9-22    UART2-RXD Pin 4 - Ground             Pin_9-1 GPS Connection Tutorial BeagleBone Header Pins Next step is to solder to circuit protoboard:

Now that you have your vnc server working on your BeagleBone Black you can connect to the school's wifi.  First you run: wicd-curses and scroll down to Bergen-Wifi and press 'C'. After the connection is made quit and start the vnc server on the BBB as root (as explained in yesterday's post).  Then launch your vnc client on your host computer and type in: 192.168.7.2:5900 Once the gui of the BBB comes up, point the browser to bergen.edu and follow the instructions to enter your credentials and register your device (your BBB).  You must reboot inorder for the wifi to kick in. Also, it is no longer necessary to enter your credentials.  The Bergen-Wifi will remember your device.  However, you still need to run "wicd-curses" to connect. See the June 13, 2015 post on how to get the wicd daemon to connect automatically upon boot up. http://bergenballoon.blogspot.com/2015/07/13-june-15.html There is one bug in this connection though, I could not get ping...

I was able to set up a VNC server on the beaglebone black.  I followed the instructions for it here: http://inspire.logicsupply.com/p/vnc-connection.html x11vnc must be run as root.

The camera that is to face up towards the balloon, power on and start recording at a certain height, is experiencing some odd behaviour when it shutdowns through the wifi.  Basically what happens is that it powers up and starts recording, however, when it sends a signal to stop recording, it power downs the camera, and the video on the SD card is deleted.  In one test, it totally fried the SD card.  I would recommend that we buy a 32 GB SD card approved by GoPro for the Hero3+, and continue testing.  There may be something wrong with the api to control the GoPro through WIFI programmatically.