Kits and Projects (Demos)


3D printing — Electronic project accessories and enclosures
ACARS — acarsd and ACARSDeco2 software Orbitron to SDRuno  DDE to CAT for frequency tracking
AD7C VFO — DDS VFO and Enclosure Oven-controlled Crystal Oscillator   Frequency counting without GPS
AD9834 — Analog Devices AD9834 DDS Parabolic microphone Repurpose a TV satellite dish
ADS-B Antenna — Collinear antenna for 1090 MHz Physical Random Number Generator   —  Make use of white noise
APRS — Position tracking with IC-7100 and Atomic Pi PICkit 3— Microcontroller Programmer
Arduino Morse Keyer — My first Arduino project Pixie  QRP transceiver from China
Binary Clock New!  — Easy Arduino Project QMX CAT Interface   Also IQ-Mode with SDR++ and Rigctl
Buck-Boost  — DC to DC power conversion QRP SWR Meter  QRP SWR bridge + Arduino Nano + color LCD
Coax Continuity Tester — TTL and logic circuit software Quadrifilar Helix  137 MHz NOAA satellite antenna
Debouncing a Pushbutton — Sub-project and demo Raspberry Pi  Pi-1 Station clock
DOS to WiFi — MS-DOS serial COM to WiFi (UDP) Interface Raspberry Pi Pi-3 Python keyer
DS3231 — Real-time clock with WWVB updating Raspberry Pi  Software relating to radio
DTMF Generator —  Arduino tone library application RF Field Strength Meter    Based on AD8307 log amplifier
Easy Pieces — Simple but useful project ideas and suggestions RF Voltmeter    Autoranging measurement exercise
EZKeyer III — Keyer kit from Four State QRP Group Sat Assistant    Single knob tuning with Doppler correction +
Frequency Counter Kit  Crystal Tester and Frequency Counter Satellite Azimuth Tracking    RCA TV Antenna Rotor Interface
Geiger Counter   Arduino Mega based Geiger Counter UI SDR ARM Radio (from QST) Longwave Receiver
GPS Modules  u-blox Neo 6M and Neo M8N SDR Hardware Study I/Q VFO + AD831 + ... + SDRadio
GPS Frequency Counter  Accurate Frequency Measurement Si5351 Frequency Calibration —  How to correct Si5351 output
Hilltopper - 20  QRP transceiver kit from Four State QRP Group Soil Moisture Study  Arduino Nano Internet of Things exercise
Icom CI-V to UDP  Transceiver to amplifier frequency updates Song of Pi   Digital-to-analog converter breakout board
JYE Tech Capacitance Meter  Kit featured in QST SMD/SMT   Learning to Love Surface Mount Technology
LED Progress Bar  Arduino based LED progress bar demo SunFounder Robotic Arm  plays Connect Four — Interfacing
Magic Eye  1.5 inch color OLED simulation of magic eye tube Touch-sensor Paddle   Touch paddle for Python keyer
Magnetic Loop  20 meter QRP magnetic loop antenna TTL Tester   Test common 74nn logic devices (Extensible)
Mail delivery notification   RF24 application  updated Sept. 2021 Two Teensy Touchscreens —  Touchscreen for MOAK and HT40
MFJ Dip Meter  Trying out the MFJ-201 μBITX Frequency calibration by editing EEPROM
MOAK and NetMOAK and Redesign  — “Mother of all Keyers” + V4 The Mother Load   MOAK Version 4 / Teensy 4.1
N4YG Oscillator — DDS-based code practice oscillator kit WB9YBM Oscillator  Analog audio oscillator (CPO)
NanoVNA — 50 KHz to 1.5 GHz Vector Network Analyzer WWVB Decoding   Arduino with WWVB receiver (60 KHz)
NTP Server — GPS-based Arduino Uno NTP Server WWVB Encoding  Faux WWVB transmitter (60 KHz)
On-The-Go Cable —  USB host mode and Android SDR XBee Friends   Arduino XBee communications
One-watter  — QRP transceiver from Kits and Parts ZZRX-40   40 meter receiver kit from Four State QRP Group
[Color highlighted entries are recent additions. Green=newest]


    As a teenager and young adult I spent many hours assembling electronic kits. My first ham radio transmitter was a Heathkit (as was the next). In addition to ham equipment I also assembled test instruments, home stereo components, computers and modems, and much more. I enjoyed kit building as much as using the devices after they were built (and in a few cases after they were repaired).

    Over the last few decades electronic kit building has fallen victim to advances in electronics, especially the advent of large scale integration. Indeed
in many US locations it is no longer possible to find a nearby store that sells electronic parts. However, radio and electronic project kits and ideas can still be found on the Internet. Some of these are of doubtful practical interest—perhaps only good for the fun of building them, while others continue to bring pleasure after assembly is complete.

    The original page became too long, so I split it into individual pages describing kits I have enjoyed putting together, or other small construction projects, as well as one or two explorations that have nothing to do with soldering. Projects are listed alphabetically in the table above
—not in the order they were done. The video demos that accompany most project descriptions illustrate highlights and lowlights of the activities.

    See also:  Lloyd’s Demos YouTube Channel

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Projects linked from this page are intended for entertainment only. The author makes no claim as to the accuracy or completeness of the information presented. In no event will the author be liable for any damages, lost effort, inability to carry out a similar project, or to reproduce a claimed result, or anything else relating to a decision to use the information on this page.