Field Strength Meter

I’m going to use this new old stock Simpson panel meter for a field strength meter. I’m thinking of making it Arduino or Raspberry Pi based so it can be made wireless – have the sensing circuit out in the yard and it sends data and have the meter in the shack. Kind of a weird digital – analog mash up. There are many…

Mandelbrot Set

IBM had a problem – they had noise on telephone lines which caused data errors way back in the day. They hired some very interesting people to solve the problem, and this video is quite fascinating – and really fun: Just for fun, I found and ran a simple Python program that produces a Mandelbrot Set (a Fractal): from pylab import * from numpy…

First Stop on the u.RAT World Tour: EBARC in El Sobrante

I will be giving my first Maker – Ham presentation at the EBARC meeting this Friday: 7:30pm, Friday, August 11th, at the El Sobrante Library on Appian Way This will be my “warm up” for Pacificon, and several Diablo DXers will be on hand    

The u.RAT as an Educational Platform

What started out as a personal project – to use the Elecraft KPOD to control the Palstar BT-1500A, has turned into an educational platform that I can use to write articles and give presentations at Makers Meetups and Ham Radio Club and convention gatherings. I’m giving my first urat presentation at EBARC in San Pablo in just two weeks –  August 11. EBARC has…

U.RAT Video Wrap Up

Here is the full on video for the u.RAT:

The u.rat world tour: First stop – EBARC

On Friday, August 11, I will kick off the first stop on the 2017 u.RAT World Tour at the East Bay Amateur Radio Club (EBARC): http://www.ebarc.org/events.htm The second stop on this World Tour will be Pacificon – Saturday morning (I’m waiting on the time slot at this point): http://pacificon.org/ You will notice that the Pacificon web site still points to last years event, so…

A Funny Thing Happened on the Way to the U.RAT . . .

OK, so that’s a bit dramatic – but I’ll be busy first wrapping up the final “packaging” of the u.RAT Demonstration Board, and then writing articles and presentations. I will submit the article to QST with the main theme one that I will repeat at EBARC and Pacificon – which is that the “Maker – Ham” connection is a real force to be reckoned…

u.RAT – A Very Exciting Journey!

uRat Logo Copyright (c) 2017 – Rich Holoch  Killer logo designed by Jeff, K1NSS. The logo will be copy righted, the project will be Open Source. A very big breakthrough today – I have the KPOD and the Stepper code working. The KPOD is the “Head” written in C: . . . . and the Stepper code is written in Python (the Tail). This…

To Pi or Not to Pi?

The Raspberry Pi with DRV8825 drivers Nanotec Support Tutorial web page, which I learned about from this excellent tutorial on how to set up steppers on a Raspberry Pi: https://www.youtube.com/watch?v=LUbhPKBL_IU Rototron has a great web site with many Python and Raspberry Pi tutorials: https://www.youtube.com/channel/UCp2rS5TxRt6W8fieAk74bIw The “existential technical question” I’m having is whether or not to use an Arduino or Raspberry Pi for this project….

Using an Elecraft KPOD as a KY6R Mod Bob BT1500A Remote Control

I use an Elecraft KPOD exclusively to tune my K3. I can never go back to the rigs tuning knob. It has everything I need ergonomically and in the way of connectors and data signals. I’ll double check with Elecraft, but the functions I would use with this would be: The tuning knob controls the L and C stepper motors The rocker switch (VFO…