Description This project is an APRS iGate for ARISS program‘s digipeater aboard the International Space Station. I have a 2m FM radio tuned to 145.825 MHz. As the ISS passes over my location, the radio passes the received signal from the ISS to a Terminal Node Controller (TNC) that resides atop the Raspberry Pi. The …
Description I created my first Raspberry Pi WebSDR receiver in the Fall 2014. I had long intended to setup a WebSDR station, but grad school and work can really keep you busy. The first receiver on the air worked well until a suprise electrical storm popped up while I was away at work and fried …
My father-in-law is a musician and a lover of mid-century modern design. I have an obsession with tinkering. Somewhere in that mix lies the perfect gift and the perfect challenge. After taking a couple of trips to antique stores and reading a few Intructables, I came to the conclusion that I should turn an old …
First of all, this SWR meter in this article is not exactly homebrew, as I based the circuit on the schematic in the excellent book Arduino Projects of Amateur Radio. Although I bought the book and respect the copyright of the authors I will share my own schematic here. Why? First, the design in the …
The Arduino Fox Hunt Transmitter will be documented in another post, in this post I want to document the Raspberry Pi SSTV Field Day Beacon. The one thing that I don’t like about the Raspberry Pi is that it only has digital input/output logic lines. It has no built in analog capabilities to read voltages, …
Xbee Radios I purchased two XBee Series 1 Module (Freescale 802.15.4 firmware) from Adafruit. These are manufactured by Digi and are low-power module with wire antenna (XB24-AWI-001). They have a 250 kbps RF data rates and operate at 2.4 GHz. These radios use the IEEE 802.15.4 networking protocol and can perform point-to-multi-point or peer-to-peer networking , but as configured here, they do not mesh. The Digi …
I promised more details in the future about the Raspberry Pi STL build. Well, against all odds, I’m going to deliver! The project exists purely to solve a problem with getting audio between two sites for a hospital radio station. They currently use a costly dedicated line that’s purely analogue. Imagine the old fashioned exchange …
What I’ve made is a radio with 6 buttons and a 20×4 LCD screen. There is an “ON” button, and “OFF”, “BACK”, “PLAY”, “STOP” and “NEXT”. It is connected to the internet via WiFi, and it powered by a USB hub connected through a Pi-Supply (http://www.pi-supply.com/product/pi-supply-raspberry-pi-power-switch/) so I get a proper shut down. And I …
TNC-Pi is a special version of TNC-X designed to interface directly with the Raspberry Pi computer. It can connect to the Pi either via the Pi’s serial port, or via the I2C protocol. In the latter case, a single Pi can support multiple TNC-Pi’s at the same time, since each TNC-Pi can be given a …
This simple hack turns your Raspberry Pi into a powerful FM transmitter! It has enough range to cover your home, DIY drive-in movie, a high school ball game, or even a bike parade (depending on the stragglers). PiFM software not only boldly enhances the capability of your Pi, but does so with nothing more than a …
