Tag: cnc. milling

• 7MHz Transmitter with AVR Soft-keyer

  

  In my last post, I went over the design of a Colpitts crystal oscillator design that put out a moderately clean 7 MHz signal. In order to match the output impedance to 50 Ω, an NPN feedback pair (at least that’s what I’m calling it) was designed. While meeting the specs for driving an ADE-1…

  abram

  March 3, 2019

  notes

  40m, 7MHz, amateur radio, amplifier, Arduino, atmel, attiny85, circuit, cnc, cnc. milling, cw, filter, hf, low frequency, morse, morse code, pcb, radio, rf, transmitter

• initial PCB milling test…

  

  here’s an initial PCB test for the Triode tube overdrive on the SMBA site. this picture is pre-sanding. it was milled using LinuxCNC on a Xubuntu 14.04 LTS running the Xenomai-2.6.2.1 kernel version 3.5.7. it’s taken some time to get the configuration working and compiled since i didn’t want to use the live CD. the…

  abram

  August 31, 2014

  notes

  cnc. milling, electronics, emc, linuxcnc, pcb, xenomai