Blog Archive: September 2025
GetSimple Blog and Time Zones
On July 9, 2017
I use the GetSimple CMS and the GetSimple Blog Plugin on my website. Today I was informed by a friend that one of my recently posted blog posts was blank. After a bit of troubleshooting I finally narrowed it down to the fact that the posts were showing a posted-time in the future, and thus hadn't posted yet. I hadn't noticed this as once
Extracting a JPEG header with Python
On July 9, 2017
A friend and I have been playing around with capturing images from LilacSat-1. Data loss is not unheard of when trying to recieve data from a small box hurtling through space. One of the issues we've run into is missing the first packets that include the JPEG header (for the sake of simplicity, we're going to temporarily redefine "JPEG
Negative PPM value for RTL_FM
On July 1, 2017
A friend was setting up an APRS i-gate with a Raspberry Pi and an RTL-SDR receiver and ran into the issue that he needed to configure it for a negative PPM value for frequency correction. When providing rtl_fm with the PPM correction, it expects it in the format of rtl_fm -p nn where nn is the PPM value. The