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by yv1hx
Wed Feb 18, 2015 7:49 pm
Forum: General discussion
Topic: Raspberry Pi weight official figures
Replies: 7
Views: 1261

Re: Raspberry Pi weight official figures

jamesh wrote:Note there is no official weight...but those numbers are probably good enough!
jamesh,
Those figures are good enough for me.

Thanks a lot.
by yv1hx
Wed Feb 18, 2015 12:58 am
Forum: General discussion
Topic: Raspberry Pi weight official figures
Replies: 7
Views: 1261

Re: Raspberry Pi weight official figures

Thanks!
by yv1hx
Tue Feb 17, 2015 11:25 pm
Forum: General discussion
Topic: Raspberry Pi weight official figures
Replies: 7
Views: 1261

Raspberry Pi weight official figures

Hello there, I'm writing a review about the Raspberry Pi for my Polytechnic peer-reviewed journal and I'm struggling looking for the "official" weight figures for the Model A, A+, B and B+ models, but this information is not available where I supposed must be ( http://www.raspberrypi.org/documentati...
by yv1hx
Tue Feb 17, 2015 10:49 pm
Forum: Español
Topic: Uso de Raspberry para Estación Meteo.
Replies: 29
Views: 11410

Re: Uso de Raspberry para estacion Meteo.

Hola, Es perfectamente factible y realizable, ya hay varios ejemplos rodando alla afuera. Que quieres hacer: a) Usar una estacion meteorologica comercial (como la PCE o una Davis Vantage Pro) y usar la RasPi como datalogger? b) Usar la RasPi como controlador de la estacion y conectar directamente lo...
by yv1hx
Tue Feb 17, 2015 10:47 pm
Forum: Español
Topic: Comunicación VHF con la Raspberry Pi
Replies: 4
Views: 1873

Re: Comunicación VHF con la Raspberry Pi

Factible tecnicamente si, siempre y cuando uses un modem adecuado (Consulta TNC, Terminal Node Controller en San Google. Lo que no veo factible es que sea legal usar un canal de la banda VHF marina para transmitir datos...por otra parte, aunque vayas a 9600bps (si, bps!) que es quizas el maximo que ...
by yv1hx
Tue Feb 17, 2015 10:40 pm
Forum: Español
Topic: Raspberry PI 2 – Review y principales diferencias...
Replies: 6
Views: 1313

Re: Raspberry PI 2 – Review y principales diferencias...

Próximamente podréis ver tutoriales con la nueva RPI2, si hay algo que queréis que pruebe con ella; en cuanto tenga un hueco lo hago. Seria interesante repetir el ejercicio del Prof. James Cox http://www.southampton.ac.uk/mediacentre/features/raspberry_pi_supercomputer.shtml con un par de RasPis Qu...
by yv1hx
Tue Feb 17, 2015 10:35 pm
Forum: Español
Topic: Conexión tv por RCA
Replies: 6
Views: 3921

Re: Conexión tv por RCA

Les incluyo abajo la seccion relevante de mi archivo config.txt , yo no poseo televisores o monitor con interfaz HDMI, asi que hago las configuraciones iniciales con una TV NTSC casera y de alli en adelante todo lo resuelvo via SSH . ##################################################################...
by yv1hx
Tue Feb 17, 2015 10:29 pm
Forum: Español
Topic: Raspicam y raspistill
Replies: 12
Views: 2887

Re: Raspicam y raspistill

Hola Sigo haciendo pruebas con la cámara de la raspberry... Con raspistill como puedo hacer que me dispare una foto cada hora sin parar y que cada foto borre la anterior. Estoy montando una web cam para añadir a mi web metereológica que ya tengo con la raspi ;) http://www.meteolamadrid.es Hola pach...
by yv1hx
Tue Feb 17, 2015 4:51 pm
Forum: Español
Topic: Alternar Corriente con Baterias
Replies: 57
Views: 9742

Re: Alternar Corriente con Baterias

raspdroid wrote:Si te fijas lo compartí más arriba, pero gracias de todas formas.

Saludos
Uppps...mal interprete el link... my fault... ;)
by yv1hx
Tue Feb 17, 2015 1:13 am
Forum: Español
Topic: Alternar Corriente con Baterias
Replies: 57
Views: 9742

Re: Alternar Corriente con Baterias

Quiero aportarles este enlace para condimentar la discusion:

http://elinux.org/RPi_5V_PSU_construction

Hay varias "recetas" para la construccion de UPS o Fuentes de Poder para la RasPi.

Suerte :)
by yv1hx
Tue Feb 17, 2015 12:57 am
Forum: Español
Topic: Direccion del aire del ventilador
Replies: 21
Views: 11692

Re: Direccion del aire del ventilador

Hola, ¿Y si no hay ni entrada ni salida? ¿Qué puede pasar? (Yo no puedo poner ventilador). Polvo seguro que no va a coger :lol: Saludos Hola raspdroid , Por descabellado que parezca, esta s una solucion valida, como dije arriba es importante que circule el aire, ya que remueve el calor de las super...
by yv1hx
Tue Feb 03, 2015 1:06 am
Forum: Español
Topic: Direccion del aire del ventilador
Replies: 21
Views: 11692

Re: Direccion del aire del ventilador

Hola a todos, He montado una caja acrílica con ventilador a mi Raspberry con 2 disipadores de aluminio,ya que es la B+.Ahora tengo la mejor refrigeración para esta,pero mi duda es si debería meter aire a la caja o sacar el aire de dentro,que es como la tengo puesta. :roll: Gracias chicos Este puede...
by yv1hx
Thu Jan 29, 2015 12:12 am
Forum: Español
Topic: Alternar Corriente con Baterias
Replies: 57
Views: 9742

Re: Alternar Corriente con Baterias

Hola, no lo he probado, pero por qué no poner la RPi alimentada continuamente con un cargador tipo Power Bank conectado a la corriente? Cuando se cortara la alimentación de ese cargador, seguiría funcionando hasta agotar las baterías. Los tienes hasta de 5Ah. Como te he dicho al principio, no lo he...
by yv1hx
Mon Jan 26, 2015 7:40 pm
Forum: Automation, sensing and robotics
Topic: Wind Speed Sensor - can't get more than 600rpm
Replies: 18
Views: 3150

Re: Wind Speed Sensor - can't get more than 600rpm

fruit-uk wrote:
Raspberry Paul wrote:I also need to find a more powerful fan.
That'll be a car with an arm out of the window on a quiet road then ;)
Don't forget your GPS receiver... ;)
by yv1hx
Sat Jan 17, 2015 8:25 pm
Forum: Automation, sensing and robotics
Topic: Humidity and temp sensors
Replies: 7
Views: 1368

Re: Humidity and temp sensors

I just got a raspberry pi as gift and I saw you could make robots and sensors, I have an indoor garden and I'm wondering if I can use the raspberry pi to log the humidity and temp, any guides I can follow? Are there any other cool things I can do with it? I would recommend you this sensor family: h...
by yv1hx
Wed Jan 14, 2015 4:25 pm
Forum: Automation, sensing and robotics
Topic: Wind Speed Sensor - can't get more than 600rpm
Replies: 18
Views: 3150

Re: Wind Speed Sensor - can't get more than 600rpm

What about using a debouncing circuit between the reed switch output ante GPIO pin? Those can be easily made from a single IC TTL/CMOS gate, such as LM74LS14 (Schmitt trigger HEX Inverter).
by yv1hx
Wed Jan 07, 2015 12:14 am
Forum: Automation, sensing and robotics
Topic: My First Raspberry Pi Creature
Replies: 13
Views: 2857

Re: My First Raspberry Pi Creature

4. Connect battery for Raspberry Pi and motors IMG_4788.jpg Firstly, I am using a 4 AA battery pack to supply power to 2 motors and convert USB power to Raspberry Pi. However I found Raspberry Pi stop response after the motors run a few seconds. I guess it is caused by short circult behavior of DC ...
by yv1hx
Tue Jan 06, 2015 5:46 pm
Forum: Other projects
Topic: Raspberry Pi multi computer
Replies: 10
Views: 3167

Re: Raspberry Pi multi computer

by yv1hx
Mon Jan 05, 2015 10:39 pm
Forum: Español
Topic: Mover Swap
Replies: 12
Views: 1569

Re: Mover Swap

Mover la swap a otro sistema de almacenamiento puede ayudar a que el sistema vaya mas rápido. La mejora no es muy grande, pero con aumentar el tamaño de la swap de Raspbian puede ser suficiente; ya que a veces se queda corta. Saludos. Gracias por tu respuesta. Me toca investigar mas sobre el tema, ...
by yv1hx
Mon Jan 05, 2015 9:57 pm
Forum: Español
Topic: Mover Swap
Replies: 12
Views: 1569

Re: Mover Swap

No es mi intencion "secuestrar" este hilo, pero creo que cabe la pregunta a los expertos en la materia:

Cual es la ventaja de mover el archivo swap a otro medio de almacenamiento? (Aparte de ayudar a prolongar la vida de la memoria SD)

Gracias.
by yv1hx
Sun Dec 28, 2014 4:42 pm
Forum: Automation, sensing and robotics
Topic: My First Raspberry Pi Creature
Replies: 13
Views: 2857

Re: My First Raspberry Pi Creature

4. Connect battery for Raspberry Pi and motors IMG_4788.jpg Firstly, I am using a 4 AA battery pack to supply power to 2 motors and convert USB power to Raspberry Pi. However I found Raspberry Pi stop response after the motors run a few seconds. I guess it is caused by short circult behavior of DC ...
by yv1hx
Sun Dec 28, 2014 3:08 am
Forum: Automation, sensing and robotics
Topic: Sensor research project - Willing to pay for some help
Replies: 12
Views: 1953

Re: Sensor research project - Willing to pay for some help

Burt64,

I'm interested in helping in your project, I just drop you a PM.
by yv1hx
Sat Dec 13, 2014 9:39 pm
Forum: Automation, sensing and robotics
Topic: Reading BMP180 Calibration coefficients with Python?
Replies: 5
Views: 4166

Re: Reading BMP180 Calibration coefficients with Python?

As far as I know, the Adafruit library (https://github.com/adafruit/Adafruit_Python_BMP) do not mention anything about using the calibration factors. Looking at https://github.com/adafruit/Adafruit_Python_BMP/blob/master/Adafruit_BMP/BMP085.py I would say that the first thing that's done is to read...
by yv1hx
Sat Dec 13, 2014 3:41 am
Forum: Automation, sensing and robotics
Topic: Reading BMP180 Calibration coefficients with Python?
Replies: 5
Views: 4166

Re: Reading BMP180 Calibration coefficients with Python?

I was under the impression that the Adafruit library *does* actually use the sensor's calibration data... Exactly which library are you using (link)? Gr. Dirk. DirkS : As far as I know, the Adafruit library ( https://github.com/adafruit/Adafruit_Python_BMP ) do not mention anything about using the ...
by yv1hx
Fri Dec 12, 2014 9:46 pm
Forum: Automation, sensing and robotics
Topic: Reading BMP180 Calibration coefficients with Python?
Replies: 5
Views: 4166

Reading BMP180 Calibration coefficients with Python?

Hello to all, I'm working in a BMP180 based barometer, at this time the device work as expected using the Tony DiCola Adafruit BMP180 python library, but I need to read the factory written, individual calibration coefficients proper to each sensor to make a more precise sensing, but I haven't find t...

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