Have recorded a new range peak in dump1090 running the Mode-S Beast together with a G7RQG antenna – 488km.
Get JavaFX working on a Beaglebone Black -PITA- but here is how I did it…
While upgrading my Beaglebone Black with 4D Systems LCD 4DCAPE-43T to Debian 8 I discovered that the touchscreen wasn’t working anymore. Digged a day through software with no result. Then I was checking hardware and found interferences on the 4 analog signals of the touch screen, that were obviously caused by the LCD driver. A internet search brought up this post: BBB and 4DCAPE-4.3T cursor jumping. So I gave this 1nF capacitors a try and finally the touchscreen on that LCD is working rock solid.
A sure indication of the problem is that ts_calibration from Debian tslib isn’t working and reads “Took 1 samples…” for all 4 axis. Also ts_print_raw shows readings while not touching the screen. Continue reading
A simple improvement that I have done to all my RTL-SDR sticks is the hardening against electromagnetic interferences (EMI) or noise using a self made sheet metal housing.
The ADSB receiver OS image that I use provides several performance graphs including the CPU temperature. For receivers installed on a remote location that is maybe not enough to monitor what’s going on inside and outside the box. For that reason I decided to install additional temperature sensors in my ADSB receiver box. My choice was the the Dallas DS1820 1-wire temperature sensor. It’s easy to interface to an Raspberry Pi and the kernel comes already with drivers. Perfect for that purpose.
This upgrade is divided into two steps: 1. Connect the DS1820 to the Raspberry Pi and configure the kernel drivers – 2. Reconfiguring the collectd service and the shell script that is creating the performance graph so that the additional temperatures will be logged and plotted as well.