This is my Arduino controlled antenna tuner for ladderline fed antennas. It uses an arduino nano, which saves stepper motor positions, and relay settings to eeprom, for quick QSY´s.

3D Printed Twin Paddle Cw Key (566grs.): So far having an accurate, soft and heavy_duty twin paddle key meant spending a lot of money .
My intention when designing this key was doing a paddle :
a)- Cheap --- It is made of plastic with a standard 3d printer…

Decoder based on ATtiny85 and a simple telegraph key.

Sketch: https://bit.ly/2Z3ToZ1
Diagram: https://bit.ly/2Hgux9b
Telegraph Key: MFJ-550
Power: 3.7V lipo
Mount: bread cutting board :)
White Solderless Prototype PCB Board

CO2 Monitoring As an Anti-Covid19 Measure: pierre.carles@sorbonne-universite.fr, January 2021Here, we propose an open-source, portable, autonomous, cheap and easy-to-use device to monitor and record the concentration of CO2 in ambiant air in real-time. Using…

Based on Eclipse, the Arduino IDE 2.0 (beta) release brings support for live debugger, autocompletion, faster compilation, and more.

Los microcontroladores se encuentran en todas partes y se utilizan a diario. Pero, ¿qué les diferencia de una CPU convencional o un SoC?

Setting up the XploreFlash Programmer




Using Xplore Flash
The first startup window


Select the programmer as USBasp


Select the micrcontroller eg AT89S52


Browse the hex file


Programmer erases, flashes...

¿Cómo usar el WorkBench de FreeCAD para generar piezas STEMFIE con suma facilidad y sin tener que aprender a diseñar nuevas piezas.

Documentación en PDF en el Github
https://github.com/maynej/Electronics-Stemfie

Fichero Stemfie WB en el Github
https://…

Las Raspberry son ordenadores baratos del tamaño de una tarjeta de crédito. Su precio, 35 dólares. Y sirven para crear cualquier cosa.

In this video, I will show you how I built my Magnetic Loop Antenna, and I'll share with you some practical steps and tips from my experience.

How to build the remote tuning unit that can control a Stepper Motor, using WiFi, and with that feature, you will…

Everything you need to know about using batteries to power a Raspberry Pi. Also explains how to calculate the correct battery size and battery life for a particular application.

Robotics is a trending topic right now in the Raspberry Pi world, but it's not always easy to understand what's out there. In the few last years, many robot kits have been released for anyone

Importante:Durante la pandemia, la empresa fabricante de las pantallas Nextion, tuvo que recurrir a cambiar algunos de sus componentes de las mismas, por el faltante o escasez de partes de los países proveedores, como China y otros.Debido a estos cambios…

Learn about nRF24L01+ 2.4GHz Wireless PA LNA Transceiver along with its Working, Features - Multiceiver & ShockBurst, Pinout, Wiring, Library & Arduino Code

Un detector económico y simple del retorno de radiofrecuencia en tu cuarto de radio. Con un led, un poco de cable fino (0.2 a 0.4 mm recomendado) y un clip de ferrita, puedes tener un método simple de detectar si tu balun o tu choque de RF estan funcionando…

Aprendemos a usar un transistor MOSFET como interruptor controlado por electricidad, para encender y apagar grandes cargas con las salidas de Arduino

dfrobot . website
👇👇👇👇👇👇
https://www.dfrobot.com/?tracking=60bf370a7d551

Circuits and diagrams can be found on the blog
👇👇👇👇👇👇
https://inventorkr.blogspot.com/2021/09/how-to-make-mini-oscilloscope.html

COMPONENTS oscilloscope
👇👇👇👇👇👇…

Amaze your friends! Learn Morse code with the Morserino-32. The Morserino-32 allows you to practice sending and receiving Morse code.

Morserino-32: http://www.morserino.info

As Amazon Associates, we earn from qualifying purchases. Using the sponsored links…