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by morind79
Fri Oct 07, 2016 10:04 am
Forum: Device Tree
Topic: Help on setting pins
Replies: 5
Views: 1592

Re: Help on setting pins

Thank you for your answers, you are right, I am able to use them :-)

For I2C devices, should I use I2C0 or I2C1 ?
And if i should use I2C1, can I then I2C0 as normal GPIO ?

thank you
by morind79
Sat Oct 01, 2016 7:12 pm
Forum: Device Tree
Topic: Help on setting pins
Replies: 5
Views: 1592

Help on setting pins

Hi all,

I ordered a Raspberry Pi 3 for an automation project.
I need GPIO and do not need SPI.

I disabled SPI with rasp-config.
I would like to use pin 19, 20, 21, 24, 26 as GPIO like pin 11 (Number are from the 40 pins connector)

How should I proceed ?

Thanks for the help

Denis
by morind79
Tue Sep 10, 2013 8:54 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Communicate SIM900A GSM Board via I2C
Replies: 1
Views: 1424

Re: Communicate SIM900A GSM Board via I2C

Hi meetjeremy,

As far as I can see the communication with the board is not I2C but RS232.
Anyway, I made such communication with almost the same module. Please have a look at www.raspext.com where I described what I did.

Hope this will help.

Br,
Denis
by morind79
Wed Aug 07, 2013 1:27 pm
Forum: Java
Topic: PI4J + LCD
Replies: 19
Views: 11079

Re: PI4J + LCD

Hi,

Please have a look here : http://www.raspext.com/forum/
i have created a library for LCD display using Pi4J

Best regards
Denis
by morind79
Wed Aug 07, 2013 1:24 pm
Forum: Français
Topic: RaspExt
Replies: 2
Views: 602

Re: RaspExt

Salut à tous,

J'ai (enfin) terminé le développement du gestionnaire du module SIM900, vous pouvez le consulter sur le blog raspext.

a+
Denis
by morind79
Wed Aug 07, 2013 1:23 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi all,

Just to let you know I have updated the raspext blog, now there is a new code to handle SIM900 modules.

Best regards

Denis
by morind79
Sat Feb 16, 2013 8:43 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi d0vr,

You can use the data to manufacture it for free, no problem.
If you have more question, please go on the RaspExt website, there is also a forum dedicated to the board.

Best regards
Denis
by morind79
Mon Feb 11, 2013 4:40 pm
Forum: Other programming languages
Topic: Pi4J and I2C
Replies: 5
Views: 5755

Re: Pi4J and I2C

Hi Smoogli,

The I2C module connected is a LCD screen (4 x 20 characters)
If you need more information, please have a look at www.raspext.com, I will add more on it as soon as I can.

Best regards

Denis
by morind79
Fri Feb 08, 2013 7:29 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Corrupted data via I2C interface
Replies: 7
Views: 2492

Re: Corrupted data via I2C interface

Hi Zane, Yes i solved this issue by programming the VTMotor frimware. As there is source code it is then relatively easy to change it, this is what I am doing to use stepper motors. I guess the original frimware is not good, because we all have the same issue. Also be careful with the Grove board ve...
by morind79
Tue Feb 05, 2013 2:56 pm
Forum: Français
Topic: RaspExt
Replies: 2
Views: 602

RaspExt

Bonjour,

Juste pour info, j'ai réalisé une carte GPIO pour la Raspberry Pi.
Pour plus d'info : http://www.raspext.com

a+
Denis
by morind79
Tue Feb 05, 2013 10:15 am
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi all,

I have created the new GPIO board named RaspExt.
You can have more information on it :

http://raspext.com/

Please leave me your comments.

Best regards

Denis
by morind79
Fri Jan 18, 2013 2:57 pm
Forum: Français
Topic: Alimentation Recepteur 433Mhz
Replies: 8
Views: 2324

Re: Alimentation Recepteur 433Mhz

Bonjour, Quel est votre module 433MHz ? En fait il en existe plein, certain sont compatible 3.3V, d'autre 5V... La carte RPi fonctionne qu'en 3.3V et ne tolère pas le 5V. Donc si votre module 433 MHz est compatible 3.3V pas de problème, par contre s'il ne l'est pas, il faudra faire des conversions d...
by morind79
Thu Jan 17, 2013 12:05 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Corrupted data via I2C interface
Replies: 7
Views: 2492

Re: Corrupted data via I2C interface

Hi Prevoste, I bought exactly the same I2C motor driver, mine is in version 1.2. When I power on the card all LED are on, and when running i2cdetect, then I see nothing, but as soon as I remove the I2C connector of the Grove board, then I am able to see the I2C LCD I have on the same bus. I think in...
by morind79
Fri Jan 11, 2013 8:40 am
Forum: Français
Topic: Entrée/Sortie I/0
Replies: 16
Views: 3627

Re: Entrée/Sortie I/0

Bonjour, Juste pour info, je suis en train de développer une carte GPIO qui permet d'ajouter pas mal de choses, voir le post : http://www.raspberrypi.org/phpBB3/viewtopic.php?f=45&t=26298 J'en ai fabriqué une déjà (proto) et j'arrive a faire fonctionner un afficheur LCD en I2C, le RTC, le port série...
by morind79
Thu Jan 03, 2013 7:06 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi, Thank you for your answer. The USB connector is here to power up the Raspberry Pi board. I know doing things like this, as the +5 is also connected to the GPIO port, then the polyfuse on the Raspberry will be shorted, but this is not a problem, in fact these polyfuse are not necessary. In fact t...
by morind79
Thu Jan 03, 2013 1:25 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi,

After this end of year period, I finished the schematic for the GPIO board.
Here is the latest version :
GPIOV3.zip
(34.43 KiB) Downloaded 235 times
Please have a look and let me know if you have some comments.
I will create Gerber X files to build the PCB.

thank you

Best regards

Denis
by morind79
Sun Dec 23, 2012 11:54 am
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Hi, After some nights, I have changed the schematic a little bit. In fact instead having voltage converter after MCP23x17, I put them before, this way the schematic is simple. Here is what I have now : GPIOV3.zip Do not know if SPI will work like this. Never tested it. Again, all comments are welcom...
by morind79
Fri Dec 21, 2012 8:34 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

Re: GPIO Board development

Thank you TonyD :-)

Well I do my best to create a board that will be good for several things.

Nobody can help me on this schematic ?

For now I set up 2 libraries using the excellent Pi4J, I am able to use a I2C LCD screen, and also using the RTC DS3231.

Thank you

Best regards,

Denis
by morind79
Thu Dec 20, 2012 1:53 pm
Forum: HATs and other add-ons
Topic: GPIO Board development
Replies: 11
Views: 4022

GPIO Board development

Hi all, I am creating a GPIO board for my home automation. Of course it can be also used to do other things :) I have already created one, but found some trouble on it, so I am designing a second one. Here is the schematic I have already done : GPIO_V2.zip The board has : 64 digital IOs, each 8 pair...
by morind79
Thu Dec 13, 2012 8:17 am
Forum: Other programming languages
Topic: Pi4J and I2C
Replies: 5
Views: 5755

Re: Pi4J and I2C

Hi Robert,

Thank you very much, this helped me a lot.
I am able to send some data to the I2C LCD screen using Pi4J now.

Best regards

Denis
by morind79
Tue Dec 11, 2012 2:04 pm
Forum: Other programming languages
Topic: Pi4J and I2C
Replies: 5
Views: 5755

Pi4J and I2C

Hi all, I have made a PCB with several things working with I2C, SPI and digital I/O. I plan to use Pi4J which seems very good. For normal digital I/O, no problem I can do what I need. But for I2C and also SPI, I think I will need some code example. For example I connected an I2C Lcd screen (2*16) th...
by morind79
Tue Dec 11, 2012 1:58 pm
Forum: General discussion
Topic: forum request
Replies: 3
Views: 1049

Re: forum request

Yes, having a Java forum will be really nice, I vote +1 000 000
by morind79
Mon Dec 10, 2012 4:09 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi looping at startup
Replies: 4
Views: 686

[SOLVED] Re: Pi looping at startup

Hi,

I have solved my issue, this was my mistake :?
In fact on the 3.3V there was a kind of short ! I solved this and now everything is all right.
Now, this is programing using Pi4J :)

Thanks for all

Denis
by morind79
Mon Dec 10, 2012 12:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi looping at startup
Replies: 4
Views: 686

Re: Pi looping at startup

Hi,

Yes I thought it was a power issue, but I have removed the fuses (near the host connector) and my power supply is able to deliver 2 A. I have a ampermeter and I am bellow 2A (around 1A) so I do not think this is the issue.

Another ideas ?

Best regards

Denis
by morind79
Mon Dec 10, 2012 10:36 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi looping at startup
Replies: 4
Views: 686

Pi looping at startup

Hi All, I build a PCB to add more GPIOs and also I2C... I can send the schematics if needed. I plugged it on the RPi and start it up. I see the Pi is booting up for 10 secondes and then reboot... So it is looping like that. I saw the issue concerning the limitted current, but as I already removed th...

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