Ryan Tolboom

AIOC If you’re not familiar with the All in one Cable (AIOC), it’s a great project that uses a microcontroller, a Kenwood type connector, and a USB-C port to interface with an HT.

TL;DR Use this dimmer with a Raspberry Pi via the GPIO pins with this software I wrote.

Overview Rob Robinett, AI6VN, recently reached out to me to let me know that he was seeing Doppler spreads of zero for some signals using the wsprd.c patch I wrote.

Purpose After examining the Doppler spread (w50) algorithm from FST4 and trying to understand how wpsrd works I decided to take the plunge and see if I could calculate Doppler spread from WSPR data.

Purpose The goal of this article is to pick apart exactly how wsprd works.

Purpose My boat needs some new rope bags.

At HamSCI 2023 this past weekend I was lucky enough to be able to attend Gwyn Griffiths' (G3ZIL) Identifying 14 MHz Propagation Modes Using FST4W SNR and Spectral Spread and Rob Robinett’s (AI6VN) Low Cost, High Accuracy and Stability FST4W Transmissions…

A textbook that I wrote, Computer Systems Security: Planning for Success, is going to be featured during OEWeek!

As far as text processors go, I’m a big fan of Asciidoctor.

I remember talking to a friend about AWS a few years after we had both finished our undergrad degrees.

I decided to begin developing a web app to keep track of groups in some of my classes.

Purpose As part of my continued efforts to automate the deployment of my home network, I ran into an interesting situation.

Purpose My original homelab consisted of a Dell R710 which was a ton of fun to play with, but ultimately the turbojet noises and utility bill led me to bring it in to work and purchase a couple of broken Dell R610s.

Motivation I’ve started spending more time family camping than solo backpacking and this has necessitated a change in the way I do things.

Goal With the basics of the jr network established (see Introducing jr: A Peer-to-Peer Social Network), I wanted to simulate the growth of the extended network and find a mathematical model that describes this growth. core/extended-network-test builds a t…

Intro A friend of mine, John R., has been extolling the virtues of Clojure for years now.

Intro In high school, I was given a Sun 3/60 workstation and given instructions to set everything up and learn how to use vi.