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Onju Voice - AI assistant replacement to Google Nest Mini by @justLV
DIY 1kW Open Source MPPT Solar Charge Controller
kv4p HT v1.7b
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Bike Fingerprint - PCB
Solar Powered WiFi Weather Station V2.0
iSpndel_4.0
SummerCart64 - a fully open source N64 flashcart
Tad Boy Color
Arduino RC engine sound & light controller with inertia simulation for ESP32
400 Watts Stereo Audio Amplifier Board DIY 2SC5200+2SA1943
Frog Boy Color
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Onju Voice - AI assistant replacement to Google Nest Mini by @justLV
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kv4p HT v1.7b
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Note from the author: It's very hard to find the correct ESP32 dev boards now with the resistors, they are sold out...
kv4p HT v1.7b
18796
28
39
Vance Vagell
Vance Vagell
UNITED STATES OF AMERICA
38
0
The Sputnik regenerative receiver was designed for the 40m amateur radio band, the perfect project for beginners in homebrew radio receivers. It can be modified for other HF amateur radio bands. Teste...
Sputnik Regenerative Receiver - SSB, CW, AM, FM
18500
15
18
DX Explorer
DX Explorer
ROMANIA
39
47
ja2gqp FOR DDS OR SIGNAL GENERATOR. PCB DESING BY USTAOGLU CORP. FROM TARSUSTEST VIDEO:https://www.youtube.com/watch?v=212D4QiPgfohttps://www.youtube.com/watch?v=n4w5KgrMIzAhttps://www.youtube.com/wa...
ja2gqp DDS VFO SI5351 FOR QRP AND SIGNAL GENERATOR
11286
0
11
AUDIO USTAOGLU
AUDIO USTAOGLU
TURKEY
480
18
Eight fused Anderson PowerPole connectors for power distribution in Amateur Radio projects.
Anderson PowerPole Distribution
1633
2
1
Edward Zembower
Edward Zembower
UNITED STATES OF AMERICA
3
0
This is a keyer that I designed to be used with a "sideswiper" or "cootie" Morse Code sending key. The circuit includes a PICAXE microcontroller, a twin-T tone oscillator, and an audio amplifier. When...
Morse Code Keyer, Rev: 7
2441
0
4
Charles Hampton
Charles Hampton
UNITED STATES OF AMERICA
3
7
A simple QRP CW transmitter built in less than ten minutes. Only eight components and an output power of around 700mW @ 12V or 500mW @ 9V. The power output depends on the transistor used and also on t...
Ten Minute Transmitter
599
0
1
DX Explorer
DX Explorer
ROMANIA
39
47
I recently restored a Grundig Satellit 2100, which turned out really well, and which can be viewed on my YouTube Channel, Electronics Old and New. I mentioned then that I’d think about building an ext...
External BFO V2.1 SMD version
1961
2
2
Manuel Caldeira
Manuel Caldeira
PORTUGAL
234
3
I recently restored a Grundig Satellit 2100, which turned out really well, and which can be viewed on my YouTube Channel, Electronics Old and New. I mentioned then that I’d think about building an ext...
External BFO V2.0 through-hole version
2140
0
0
Manuel Caldeira
Manuel Caldeira
PORTUGAL
234
3
Pititico, QRP CW transceiver designed by PY2OHH. One of the smallest and simplest transceivers designed around a single 2N2222 transistor. The power output is around 350 to 700mW most of the time, dep...
Pititico, One Transistor QRP CW Transceiver
2265
0
4
DX Explorer
DX Explorer
ROMANIA
39
47
A simple QRP CW transceiver with one transistor and an audio amplifier, based on the Pititico CW Transceiver designed by PY2OHH. This is the 40m band version and it has about 700mW output power. It's ...
Pititico 2, QRP CW Transceiver
3132
2
8
DX Explorer
DX Explorer
ROMANIA
39
47
A simple QRP wattmeter and dummy load that allows you to measure the RF output power. Designed for QRP with 1W to 10W scales or 2W to 20W. In the blog article you will find more detailed info.Read the...
Two Scales QRP RF Wattmeter And Dummy Load
2361
2
3
DX Explorer
DX Explorer
ROMANIA
39
47
A very simple QRP minimalist CW transmitter built in less than ten minutes, using only twelve components and an output power of 700mW @ 12v. Please note that the assembled version available for orderi...
QRP Minimalist CW Transmitter
3459
2
4
DX Explorer
DX Explorer
ROMANIA
39
47
Assembly manual is here : http://www.siars.org.in/wp-content/uploads/2020/09/CPO_Manual_V2.pdf
Morse Code Code Practice Oscillator- Twin T Oscillator
2588
0
1
Sinosh PK VU2LN
Sinosh PK VU2LN
INDIA
2
0
A simple NE555P IC audible RF field strength meter. It can detect a 1W VHF / UHF handheld from about 2 or 5 meters away. A useful tool to have for testing radio gear. In the blog article you will find...
Audible RF Field Strength Meter
1818
0
3
DX Explorer
DX Explorer
ROMANIA
39
47
