A place to document and share things I do

Author Archives: Cort Buffington


I like to ride bicycles a lot. Especially road bikes. One of the things that I’ve done over the years is get my own custom jerseys made. This ends up being a case of thinking up something fun, and then Read more…


So there’s a new feature in MMDVM you say? Don’t want to wait for me to compile a new version for you? Never fear, I’m about to show you how to roll your own. To be clear, I’m talking about Read more…


Here it is! The most asked for article and most often asked question since I introduced the STM32-DVM-MTR2K just over a year ago. Today we’re going to add an external analog repeater controller to an MTR2000 in parallel with an Read more…


This is a common question I’ve been asked about both the STM32-DVM-MASTR3 and the STM32-DVM-MTR2K. When I went digital, I went pretty hard core. I haven’t had a ham repeater controller for a few years now. My brother Gavin, N0ECQ Read more…


I’ve had a few requests from folks who want to build their own STM32-DVM-MTR2K boards. While it’s not for the faint of heart, I have decided to make the necessary files available. This article is just as much a story Read more…


It took longer than I’d hoped, but I have just released a firmware update for the I/O processor on the STM32-DVM-MTR2K V2.0 boards. Those who watched it closely had asked the question why did I only connect 4 of the Read more…


This project has gotten a lot bigger than I ever thought it would. What started almost as a dare has turned into something very real. There has been a steadily increasing demand for the STM32-DVM-MTR2K, and while I said I Read more…


Editor’s Note: This board is currently available, and has been since shortly after this article was originally posted. For more information, navigate to the “Products from KS-DMR” section of this Web site. After publishing the article MTR2000 and STM32-DVM-MTR2K: Analog Read more…


This is going to be a very short article, because while this is a really popular topic in my email inbox right now, it’s also a really simple one. The question is how to set up MMDVM for using an Read more…


In the fourth installment on the STM32-DVM-MTR2K, I want to take a deeper dive into the system and go through two ways up update the firmware on the MODEM. One is manual, and the other is automated, which you can Read more…