Lapuan Radiokerho Ry OH6AC

Aktiivinen radioamatööri Kerho Etelä-pohjanmaan lakeuksilla.

[adafruit industries @adafruit]

Cloning a Sennheiser BA2015 battery pack

https://t.co/3D6sZWFqAo

[Jeremy KD8TUO 🇺🇸⏦⎓⎎⎍⏚ @ElectronicsbyJH]

I have this VNA, that is all. Carry on 😂

[tt_125 @tt12514]

sx1278 σε ένα από τα Hornet

quote "Martian (Hornet) Control frequencies: 137-525 MHz, Video: 4200-5400 digital"

[CNX Software @cnxsoft]

RISC-V development board with USB 3.0 and Fast Ethernet ports
https://t.co/q1yOsFOonP

MuseLab nanoCH32H417 board is based on the @WCH_Tech CH32H417 dual-core RISC-V MCU with 896KB SRAM and 960KB Flash. Besides USB 3.0 and 100 Mbps Ethernet, it offers two USB-C ports, a microSD card slot, a built-in WCHLink-E debugger, and four 13-pin GPIO headers for expansion.

It's supported by the MounRiver Studio IDE, and some basic documentation is available.

[maker.io @MakerIO]

Maker Project - ESP32 Thing Plus (USB-C) Hookup Guide from @sparkfun

📖➡️https://t.co/wQRcAGUuAL

[Juan Carlos - EA3GRN @ea3grn]

https://t.co/KUN7UJ8CiX Hemos comprado una nueva estación de soldadura, compatible C245 y que puede usar puntas JBC. Se trata de una Yihua 982D I Pro, que combina cuerpo de soldador y pinzas de desoldado. #yihua #982D #soldador #c245 #jbc #estacionsoldadura

[Aircorridor @_aircorridor]

Top 3 articles to get started with off-grid communications:

1. What is Meshtastic: https://t.co/pHO2qzEU2x

2. Choosing the Right Hardware for Your Meshtastic Network: https://t.co/AbO4sz6JRv

3. Internet Access Over Meshtastic LoRa Networks:
https://t.co/6zaMohGIAX

[Electronic Cats @electronicats]

The wait is over 🚀
FlatSat 1 is officially ready, and shipments will begin soon.

Created through a collaboration between PWNsat and Electronic Cats, this product is about to be in your hands. 🛰️🐈⬛

#FlatSat1 #ElectronicCats #PWNsat #HardwareHacking #EmbeddedSystems #Cybersecurity #DEFCON #OpenHardware

[Faisal Al-Numani @0xF9l]

عندما يتحكم متحكم STM32 في محرك صناعي ضخم، فإن الخطر الأكبر ليس في الكود، بل في الكهرباء. المحركات والمرحلات (Relays) تولد تيارات عكسية (Back-EMF) عند إيقافها، قد تؤدي لاحتراق مداخل المتحكم فوراً. كيف نحمي أنظمتنا؟

[タマゴさん @86723nasogamat]

D級アンプ基板作りました
・定格100W+100W(8Ω)
・FC方式5レベル単相フルブリッジ2回路搭載
・EPCのGaN FETを32個使用
・FPGAによるデジタル制御とPWM
・スイッチング周波数375kHz(出力リプル3MHz)
・ADC及び制御周波数3MHz
・独自手法のf0抑制電流帰還(純L電流制御方式)
・アナログ入力とUSB入力に対応

[EA4HLB @EA4HLB]

Although I haven't used it yet to work sats repeaters (I don't have a full duplex HT), which was originally the reason I bought it for, I am so happy with this little diplexer from @ThePCBDesigner. It allows me to use my cubic VHF/UHF antenna and switch quickly from band to band.

[JJ1RUX_のびぞう工房 @Jj1Rux]

ARDFの144MHz受信機が練習会でのテストを受けて、色々改良。Ver.1.0になりました。ブログでまとめています。かなり使いやすい・・気がします。これで大会にもチャレンジしちゃいます！https://t.co/TPYBZfHzwT

[adafruit industries @adafruit]

A sophisticated WiFi auditing library for ESP32 microcontrollers

https://t.co/3Ykg47zsII

[JM3LGF 📡⚡︎ わかやまSW350（L.F.R team WAKAYAMA）🇯🇵 @jm3lgf]

RBT Radio RBT-9500 DMR Transceiver

RF Power : 20W
136-174/240-260/350-390/400-520MHz

https://t.co/svW4IlGPFZ

[Vladimír Večeřa @vecera_vladimir]

PCB má 496 cest a 103 prokovů. UF! Základní deska pro meteostanici vypadá, že je hotova. Ještě to projdu, ale snad to bude už OK.

[Radioactive Red @radioactivered]

This is a krytron, a high-speed trigger switch historically used in nuclear weaponry to control the timing of detonation circuits. It’s an ultra fast, gas-filled tube that works by using a small electrical trigger to ionize gas inside, which instantly allows a much larger current to flow. The ability to switch high currents almost instantly is what makes it useful in systems where extremely precise timing is critical. Some krytrons contain a small amount of radioactive material (like Nickel-63 or krypton-85) to help the gas ionize more reliably.

Krytrons were developed in the early 1950s and used primarily through the 1970s, especially during the Cold War. In nuclear weapons, they were part of firing circuits that required multiple electrical pulses to occur at almost exactly the same moment. They were also employed in scientific and industrial applications such as pulsed lasers and high-speed photography.

Legally, krytrons are heavily controlled under export regulations like the International Traffic in Arms Regulations (ITAR). They are legal to own in the U.S., but exporting them internationally without proper authorization is strictly prohibited.☢️

[Scott Powell @ripple_biz]

MeshCore firmware v9.2 for the LilyGo T-Watch S3 Plus now ready: https://t.co/gQUDTiZJ2N

[Lapuan Radiokerho Ry OH6AC @OH6AC]

Korjaus hommia #meshtastic #suomimeshtastic #WioTrackerL1 #seeedstudio #elektroniikka

[Colin Summers @MM0OPX]

How it started and how it ended up 😁

[Juan Carlos - EA3GRN @ea3grn]

https://t.co/Wxb413Hg3A Vamos a ver como construir de forma fácil un muestreador de RF para poder ajustar equipos. #rf-sampler #w5qn #bias #diyelectronics #hamradio #radioaficionados #t50 #t37