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31  Using Arduino / Project Guidance / Re: 3D printer electronics - SAV MkI on: December 02, 2013, 11:37:43 am
The first image is from Rev A of The PCB. Rev b, already has these updates on the second image posted. Thank for  the inputs, they are all very much appreciated!

The board is an alternative of the boards already available. The main differences are highlited in my previous posts. It's an alternative to the sanguinololu, printer board and ramps. It is an entry level board for reprappers.
32  Using Arduino / Project Guidance / Re: 3D printer electronics - SAV MkI on: December 02, 2013, 04:14:30 am
I haven't sent out a post on The reprap Forum just yet.

As this was the first forum I joined a while ago I thought it was a good idea to share here first.

The main features on top of the basic printer control:
- Hotend and heatbed well dimensioned FETs that can take up to 15A without heat-sinks.
- High speed native USB interface connectivity going up to 8Mbps so that there is no lag on your prints.
- 12V built-in fan controller for your layer fan or hot end cooling.
- Micro SD reader for autonomous printing.
- Bluetooth dongle (dongle not provided, tested with HC-05 and HC-06) interface adapted to its logic levels for wireless operation.
- Expansion bus to connect a keyboard and LCD.
- Support for 4 standard pololu compatible stepper motor drivers.
33  International / Español / Re: electronica impresora 3D - SAV MkI on: December 01, 2013, 07:40:53 pm
Gracias JRodrigo!
34  Using Arduino / Project Guidance / 3D printer electronics - SAV MkI on: December 01, 2013, 07:39:47 pm
Hi folks,
I have just launched a new Arduido IDE + Teensy 3D printer electronics. The board was designed within the RepRap Clone Wars community group.

The Clone Wars RepRap group has a bunch of enthusiasts (couple of hundreds) with a very peculiar model sharing model: the first lot of plastic pieces to build a RepRap is donated by someone in the community. This donation will help you get started with your 3D printer (there are several models that people can choose from). In exchange for the donation, when you have your printer up and running you are obliged to do the same. You can also contribute to the community by doing or designing something for them. In my case, I donated and also designed this board. The printer family tree is spectacular almost two years since it began. 

The SAV MkI is the first board that has been designed in the RepRap Clone Wars community group and we have launched a crowd funding campaign for it too.

Here you have a few pictures of the board.
The SAV MkI campaign: http://www.indiegogo.com/projects/sav-mki-3d-printer-electronics/x/5040667

Hope you like it.
35  International / Español / electronica impresora 3D - SAV MkI on: December 01, 2013, 07:16:36 pm
Hola a todos,

os presento la electrónica para impresora 3D programable desde entorno Arduino con el add-on de teensy.

La placa la he desarrollado en el contexto de la comunidad Clone Wars RepRap. Una placa diseñada y desarrollada para la comunidad Clone Wars.

Es el primer diseño español de una electrónica para impresoras 3D y además es la primera vez que la comunidad va a por una ronda de "crowdfunding". Aquí os dejo algunas imágenes y el enlace a la ronda de crowdfunding.

http://www.indiegogo.com/projects/sav-mki-3d-printer-electronics/x/5040667
36  International / Hardware / Re: Regular voltaje e intensidad para leds ??? on: November 30, 2013, 05:21:32 pm
Ufff, pero vas a disipar mucho calor en el FET o en la resistencia que pongas.
37  International / Hardware / Re: Regular voltaje e intensidad para leds ??? on: November 21, 2013, 10:13:01 am
Lo mejor y para no complicarse la vida busca en la red los reguladores de RECOM. Una fuente conmutada con regulación de corriente. Cualquier cosa que sea regulación lineal vas a disipar mucho calor el los transistores (si son LEDs de alta potencia 1-3W).
38  International / Hardware / Re: ¿Como puedo soldar un TSSOP con Thermal pad? on: November 21, 2013, 05:06:09 am
Si, si no la metes en la nevera el flux se estropea y se seca. Seguirá funcionando, pero regular.
39  International / Hardware / Re: PWM, MOC y motor AC universal on: November 20, 2013, 09:14:53 am
Controlar un motor con un PWM no es buena idea. Controlar un motor con un PWM que no este alineado en fase con la red usando un triac no va a funcionar.

40  International / Hardware / Re: ¿Como puedo soldar un TSSOP con Thermal pad? on: November 18, 2013, 05:38:30 pm
Yo use el precio smiley
41  International / Hardware / Re: ¿Como puedo soldar un TSSOP con Thermal pad? on: November 18, 2013, 03:29:05 am
En mouser.
42  International / Español / Re: Montaje CNC, calibrar ejes configuración y software on: November 17, 2013, 04:41:34 am
La escala es para trabajar con resoluciones de 1/100 mm y evitar errores de redondeo.
43  International / Hardware / Re: Control circuito de 220v sin relé on: November 17, 2013, 04:38:31 am
Coincido contigo. Para diseñar con triacs hay que saber lo que se hace.
44  International / Hardware / Re: Control circuito de 220v sin relé on: November 14, 2013, 11:30:18 am
La de 470Ohms? Si es esa, la resistencia tiene que ser de 1W. No póngas una de 1/4W o 1/8.
45  Using Arduino / Displays / Re: Newhaven Display NHD‐C0220BiZ New LCD driver library on: November 05, 2013, 09:46:22 am
I confirm that the setContrast method does almost nothing. It only configures the lower bits of the contrast settings. The library need a bit of refactoring and shadowing.
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