Month: April 2015
-
Using the DAC
Can we use the 12 bit DAC of the Teensy 3.1 to generate AFSK (Audio Frequency Shift Keying) signals? Lets try. First, we try to generate sine waves with frequencies of 1200 or 2200 Hz. If we could quickly toggle between those two frequencies, it would support generating AFSK. The idea is to use a…
-
Hacking the radio module
It works. I connected the SA818 module to the Teensy 3.1 and wrote some code to control it. I tested that I could turn it on, set the frequency and engage the PTT from software, and yes, it it transmits on the selected frequency. The serial port is connected to the third serial port of…
-
Webpage updates
We have recently (among other things) updated and rearranged categories to better and more intuitively link blog posts to their respective projects. We’ll also be remodelling parts of the site, and add some new content in the foreseeable future. This blogpost is more of a “stay alert” message, as things might get a bit bumpy…
-
Towards a next generation tracker
The Polaric Tracker developed by LA3T was just the right APRS tracker for search and rescue services. Now the question is, could we take this a step further and develop a new tracker which is even more advanced, yet simple to use and easy to assemble for amateurs? I believe so. The idea is to…
-
ArcticTracker
After a somewhat successful campaign from LA3T, the PolaricTracker where born, and with it PolaricServer and PolaricApp. Unfortunately, for unknown reasons (presumably cost and assembly time), the hardware part of the project died, leaving a void in the tracker market. (It was the only 5W one-button, 24H operation tracker WITH Rx and TRUE usb) PolaricTracker where…
-
hamLABS revived
As I’m writing this post, it’s been three and a half years since the last update on this page. It’s nothing short of a tradigy. Shortly after hamLABS where launched, both myself and LA1FTA had a period in life where everything else took precedence. To name a few, we got kids (with our respective spouses, just…