3D printing
— Electronic
project accessories and enclosures
|
One-watter — QRP
transceiver from
Kits and Parts |
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
an old 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 —
First
Arduino project |
Pixie — QRP
transceiver from China |
Coax
Continuity Tester —
TTL and
logic circuit software |
QRP SWR Meter
—
QRP SWR bridge + Arduino Nano + color LCD |
Debouncing
a Pushbutton —
Sub-project and demo |
Quadrifilar Helix — 137
MHz NOAA satellite antenna |
DS3231
— Real-time
clock with WWVB
updating |
Raspberry
Pi — Pi-1
Station clock |
DTMF
Generator —
Arduino
tone library application |
Raspberry
Pi — Pi-3 Python
keyer |
Easy Pieces
— Simple but useful project ideas and suggestions |
Raspberry
Pi — Software
relating
to radio |
EZKeyer III
— Keyer kit from Four
State
QRP Group |
SDR
—
ARM Radio (from QST) Longwave Receiver |
Frequency
Counter Kit — Crystal
Tester and Frequency Counter |
SDR
Hardware Study
— I/Q
VFO + AD831 + ... +
SDRadio
|
Geiger Counter
— Arduino Mega based Geiger Counter UI |
Si5351 Frequency Calibration
— How
to correct Si5351 output |
GPS
Modules — u-blox
Neo 6M and
Neo M8N
|
Soil
Moisture Study — Arduino
Nano
“Internet
of Things”
exercise |
GPS Frequency Counter — Accurate
Frequency Measurement |
Song
of Pi —
Digital-to-analog
converter breakout board |
Hilltopper - 20 — QRP transceiver kit from Four
State QRP Group
|
SMD/SMT —
Learning to Love Surface Mount Technology
|
Icom CI-V to UDP — Transceiver to amplifier frequency updates
|
SunFounder Robotic Arm
plays Connect Four — Interfacing
|
JYE
Tech Capacitance Meter — Kit
featured in QST |
RF Field Strength Meter —
Based on AD8307 log amplifier
|
LED Progress Bar — Arduino
based LED progress bar demo
|
RF Voltmeter —
Autoranging measurement exercise
|
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” +
|
WB9YBM
Oscillator — Analog
audio oscillator (CPO)
|
N4YG
Oscillator —
DDS-based code
practice oscillator kit
|
WWVB
Decoding — Arduino
with WWVB receiver (60 KHz)
|
NanoVNA
— 50
KHz to 1.5 GHz Vector Network Analyzer
|
WWVB
Encoding — Faux
WWVB transmitter (60 KHz)
|
NTP
Server
— GPS-based
Arduino Uno NTP Server
|
XBee
Friends — Arduino
XBee communications
|
On-The-Go
Cable
— USB
host mode and Android SDR
|
ZZRX-40 — 40 meter
receiver kit from Four State QRP Group |