Federico Ettlin

Passionate about electronics, photography, programming, CNC machining and build things.

[Federico Ettlin @fedeEttlin]

@splaice @arenamagdotcom https://t.co/qyMnl3dCoX

[Federico Ettlin @fedeEttlin]

@splaice Felipe mi hijo de 14 años está construyendo una computadora con compuertas lógicas. Cuando arrancó le dije, mejor primero hagamos un cortador de cables automático porque iba a tener que cortar cientos de cables: https://t.co/L6MSrJYfyf

[Matt Thompson @fuzziphy]

I get asked the question a lot about what bits I use to get such sharp traces on my CNC machined PCBs.

Typically all of the bits I use are from PreciceBits https://t.co/B0mqAT4FPT

The specific bit I use depends on the pitch, how much copper area clearing I'm doing, and how nice I want it to come out. Using less expensive bits tends to leave more burrs, but a quick pass with a fine sanding sponge cleans it up and saves tool life on the more expensive bits.

In this case when I'm routing edge connectors to slide into these PCIe sockets, I would rather have nice crisp edges for the contact pads without any burrs to catch on the contacts, so I chose a better bit.

For this board, it's straight off the machine with no post sanding/processing using an EM3E8-0071-15VC which is a 0.18mm zirconium nitride coated 3 flute 15 degree tapered stub.

I do a 0.085mm DOC with 15k RPM speed, 680mm/min feed, and 250mm/min plunge.

If I'm doing finer 0.5mm or closer coplanar trace to copper clearance, I go to a 0.13mm tapered stub.

For the contour cuts including mount holes larger than my shank I use 1.59mm 3 flute soft media cutter, which are also ZrN coated. MM3I8-0625-031FC.

Routing tiny slots like the mechanical through hole tabs on USB-C connectors I use 0.56mm 3 flue soft media cutter MM3I8-0220-009FC

[IDV @IDV_FPV]

AS3935. detects lightning out to 40 km, sips ~70 µA. how did I not know about this?

Got something in the works ⚡

[Mehdi @MehdiHacks]

🧵If you want to build your own SDR, whether from a commercial kit or an open source design, here are the projects, kits, and products I recommend.
You can also learn from them for your own design.

1/9

[i2cjak @i2cjak]

Need a resistor that explodes? Check out Vishay's MEPIC for pyrotechnic initiation.

[Albérico Barrios @AlbericoBarrios]

La impunidad. Cero control de la @imtransito vereda obstruida Bv Artigas entre Rodó y Chana

[CNX Software @cnxsoft]

ESP32-S3-based antenna rotator for satellite dishes
https://t.co/Hx8KluEYap

KrakenRF Discovery Drive is a low-cost, plug-and-play, fully weatherproof, automatic azimuth/elevation (Az/El) antenna rotator that works with the company's Discovery Dish and other directional antennas, such as Yagis and Wi-Fi grids, weighing up to 5kg.

It's compatible with SDR and HAM radio ecosystems, and supports the rotctl (Hamlib) protocol over TCP/IP and the EasyComm II protocol over serial. The C++ firmware for the ESP32-S3 control board is open-source.

[Federico Ettlin @fedeEttlin]

@sokol_cc Fax machine

[Carlos @carloseducacyl]

Tutorial de Kicad, software libre patrimonio tecnológico de la humanidad, para realizar el diseño del PCB de circuitos del #Cansat.
¡Imprescindible!
https://t.co/agGdj0UhKP

[Federico Ettlin @fedeEttlin]

@OrsiYamandu @Mario_Bergara @LustembergC @MSPUruguay @elpaisuy @teledoce @TelenocheUy @BUSQUEDAonline @Canal4_UY @EPreve

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

I almost forgot I had this series of Microwave and RF Design books by Michael Steer at NC State University

which are also officially available for free here: https://t.co/Xrrxpbc2kB

[El Zurdo @ElZurdoNecio]

Bo gurises,no imaginan el orgullo,la tranquilidad, la paz, la felicidad y la ternura que me da esta foto.
Quería compartírselas, son tiempos nuevos ,tiempos de cambio y sobre todo de humanización de un Gobierno que en los últimos 5 años fue asqueante y de espaldas al pueblo.
Volvimos! ✌️

[Massimo @Rainmaker1973]

Did you know?

The Earth's magnetic field deflects a huge amount of solar material.

Each second, 1.5 million tons of solar material shoot off of the Sun, traveling at hundreds of miles per second.

[📹 NASA]

[Bilal Hussain @BilliCodes]

Canvas API in JavaScript - Absolute beginners

[Carlos Azaustre @carlosazaustre]

Con la función 'groupBy' de JavaScript puedes crrar un objeto agrupando por una propiedad, los diferentes objetos de un array.

Disponible desde Marzo de 2024 y con soporte en todos los navegadores

[Miguel Ángel Durán @midudev]

¡Curso de Google para aprender Web Performance!

✓ Mejora el SEO y la UX de tu página
✓ Cómo cargar CSS y JavaScript más rápido
✓ Aprende a optimizar tus imágenes y fuentes

Gratis y en Español: https://t.co/MUOJ4pUTGZ

[Miguel Ángel Durán @midudev]

Libro para Aprender JavaScript gratuito y en Español.
Más de 400 páginas y disponible en PDF y Ebook:
→ https://t.co/lJTsrj2Nyh

[Andrew Back @9600]

Yes, I would like to live in a double triode valve.