Torreta de cambio rapido.

Introduccion

En la torreta de nuestro torno, para centrar las herramientas en altura, hay que ir poniendo gruesos de diferentes espesores hasta conseguir el centraje. Esto es laborioso y cuando sacas la herramienta para colocar otra, pierdes el centraje.
Con la torreta que vamos a fabricar, la herramienta se regula muy facil y muy rapido, solo hay que apretar o aflojar un tornillo. Tambien tiene la ventaja de que te puedes fabricar todos los porta herramientas que quieras para que la herramienta no pierda su centraje cada vez que se saca.

circuito impreso.

Introduccion

En este articulo explicaremos como poder hacer circuitos impresos de simple o doble cara con ayuda de hojas impregnadas con silicona de alta temperatura.
Normalmente la transferencia de toner se realiza con papeles de revista o papel fotografico, pero los resultados practicos que hemos obtenido nosotros con esta tecnica no son optimos, ya que el toner se desprende con mucha dificultad del papel, y encima una vez se transfiere deja toda la celulosa pegada al cobre, y la limpieza de esta es costosa.
Al impregnar un folio con silicona, y despues imprimir con la impresora laser el toner no sale completamente fundido, con lo que luego es muy facil transferir el toner al cobre de la PCB. Ademas este papel se puede usar todas las veces que se quiera.

Tarjeta con FPGA + controladora Puente H motores

Implementando la electronica y el software de una CNC de motores de continua

Los sistemas embedded (tambien llamados sistemas embebidos o empotrados), son sistemas altamente integrados.
Suelen ocupar muy poco espacio y tener un consumo muy reducido.
Con la entrada al mercado de las FPGA's los sistemas embedded aun se pueden reducir mas, y ya podemos hablar de sistemas SoC (system on chip, o sistema en chip), es decir todo un sistema compuesto de procesador,memoria, y circuitos de apoyo personalizados pueden entrar en un solo microchip.
Las FPGA's a groso modo podemos decir que son chips virgenes, es decir, chips que se pueden transformar
en circuitos que nosotros queramos. Estos circuitos se suelen crear describiendolos con lenguajes especiales hardware, los mas utilizados son VHDL y Verilog.

El sistema que voy a tratar en este articulo esta compuesto de una placa con una FPGA Spartan3 y memoria.
Su finalidad sera la de controlar una CNC con 3 motores de tension continua, es decir va a ser un sistema microprocesado donde vamos a necesitar 3 salidas PWM, 3 entradas para encoders opticos y otras salidas y entradas auxiliares para dar apoyo a sensores de final de carrera,botones,etc..

Milling machine with motors installed

Automatizando una fresadora

The next project that we are going to make is retrofitting a milling machine.
Retrofitting means replacing all the manual elements in the machine for automatic ones. These consist of electric motors, electronic sensors, etc... In this article we are introducing to the mechanical system of these devices.
This computer controlled milling machine s, we will have a CNC device (Computer Numerically Controlled).
Through some years of experience machining with a CNC device, i have seen how easily we can make incredible pieces in metal or more materials, in little time, and how the difficulty of machining has moved from the machine itself to the computer programs that designs the pieces. These are the CAD-CAM programs.

A CNC device is for me, one of the most important machines we can have in the yard, and I think it's a must for the professional and the hobbyst.
With this, we can machine all the pieces we need for the projects, fast and with sufficient quality.
With a non automated milling machine, some people are able to make complex things, but with much more work, phisical and mental, and the results usually are not on par with the CNC made pieces.
Also there are shops that can machine the pieces for you, but in the long way it's very expensive for our little pockets. There is also the time line, having a cnc in your bag makes you very fast and responsive.

I don't usually watch television. In Spain there is an important poverty of contents, and in addition it does not help the fact that a film with a duration of one hour and a half is transformed into a film of at least two hours with the amount of publicity they advertise.

Information about what you are watching.

After doing the center multimedia, this is my new form to watch television:
Once a week I program the essential programs for

We know that electronics components are not cheap at all, and it's important to recycle as much as we can to help our pockets, and indirectly to the planet we live.
To do this task easier, we are going to explain a way we have to reuse and recycle electronic components in an easy and cheapy way.

The first thing to do is stealing the iron from the kitchen, in a way that mum or mrs wife don't realize, and it's good if you find a good place to hide it for the rest of your life, as the lead that compounds the solder is very toxic, so it's better if you don't cook with it never more.

Iron to desolder.

Well, here we start our walking across virtual lands. The objective of this Web is to document the way we are prepared to undertake to be able to materialize one of our great dreams: the construction of robots. For it, we will document what we are making to obtain this objective.

The difficulty to construct robots is multidiscipline knowledge is needed, like computer science engineering, electronic engineering, and mechanical engineering, and in addition you need tools that if you make them are true projects in themselves.

Therefore what we are going here to approach are subjects related to developments of PCB's, general electronics, FPGA's, motors, mechanics (also we are going to construct a CNC) and subjects of computer science engineering that it will orbit almost always around free software (Linux).