Including selected articles as presented in The Printed Circuit, newsletter of the Tallahassee Amateur Radio Society (TARS)'s monthly section:
Weekend Radio Electronics Projects and Tutorials By Mike Maynard, K4ICY
Click Here for an index of Published Electronics Projects
The Minty Kool Keyer - A 3-IC Fully-Iambic Electronic Keyer with Dot/Dash Memory and Progressive Weighting
The Pleasant Code Practice Oscillator - An Amplified Shaped Sine-Wave Oscillator
The Depot Cootie - An Easy-to-Build Single-Lever Paddle
K4ICY's CW Morse Decoder for Arduino
YOU can make a simple CW Decoder that does 0-to-70 WPM in nothing flat! Uses my own custom algorithm...
Includes a 3 x 20 character text field, WPM indicator and a nifty thing that shows the code elements in real time!
Excellent for high-speed electronic-produced code, but decent for hand-sent code provided the input signal is clean.
[This is still a WIP but you can try it out!]
A Curiously Narrow CW Audio Filter - Cut out the QRM/QRN!
Columns Handheld Game for Arduino
Based on the 1989 Sega(R) arcade and console game inspired by Tetris, at the least, this portable version
uses a matrix of addressable LEDs, 2 LED numerical displays, a few buttons
and just one basic Arduino Nano or Uno.
Many other 'bells and whistles' are included such as stereo music, sound effects and haptic rumbling,
and the colorful game play is very enjoyable!
See my journal with detailed description, links to parts and download the sketch and schematic.
- - - Recommended for more advanced Arduino experimenters - - -
Breadboards, Dual Flashing LEDS & A 555-Based Timer with Relay
The Battery Saver - Low Voltage Cutoff Device - Introduction to Comparators
RF Peak Voltage Detector Circuit
One I.C. Transistor Tester
Dimming and Current Control for LEDs, Full-Color LEDs
The Wheatstone Bridge
An Audio Oscillator Circuit - The Cat-Bird
WIP - Here, I tried to add rotation to standard arcade joysticks for games requiring this feature. Shown here is only a (functionally) working prototype, but a later Arduino microcontroller version proved the paticular IR receiver SOC's used to be a poor choice due some built-in normalizing (AVC) feature. You can at least see my analog/passive circuit attempt. With the right kind of detectors the circuit will function well.