Features
Nextion Touch Screen Display — Part 1
Bring your projects into the 21st century with a touch screen display.
AC Volt/Amp Meter with Web Interface
Self-contained volt/amp meter that displays the values on a webpage via a Raspberry Pi.
Four-Position HF Antenna Switch with PC Control
Make your ham life easier with a PC controlled antenna switch.
Five More Projects for Your Amigo
New projects for Mentor’s Friend retro computer owners to explore programming and hardware interfacing with.
Turn Your Computer’s Sound Card into a Scope
Use this free software tool to gain oscilloscope skills, analyze audio signals, and measure digital signals.
DIY Biotech: Genetic Engineering with the DNA Playground
Modify E. coli bacteria to produce proteins of your choice.
The Story of the Transistor
A journey through the history that led to the most important invention of the 20th century.
Projects
Build a Headphone Amplifier — Times 3!
by Lyle Russell Williams, KC5KBG
Choose from three different headphone amps to suit your needs.
Build a 3D Printer Filament Scale
Always be sure you have enough filament for your print job with the Spool-Scale!
Build a Configurable Clock/Timer
You’ll be “alarmed” at all the cool features this unit has!
Departments
The Challenging Life of Urban Hams
by Bryan Bergeron
Being an amateur radio operator within city limits can be a hassle.
