Pi4J

1–30 of 529

THIS GROUP IS NO LONGER ACTIVE, PLEASE SEE pi4j.com FOR FURTHER INFORMATION.

0 selected

4/2/20

Conducting a revolutionary experiment. Looking for volunteers

Dear Members, Thank you for taking the time to check this post out! I am the Product Manager of a

unread,

Conducting a revolutionary experiment. Looking for volunteers

Dear Members, Thank you for taking the time to check this post out! I am the Product Manager of a

4/2/20

Sławomir Korman

4/1/20

PI4J in Struts2 Action

Hi, I liked mych PI4J I have a question regaring usung PI4J in Struts2 Web framework. I wanted to add

unread,

PI4J in Struts2 Action

Hi, I liked mych PI4J I have a question regaring usung PI4J in Struts2 Web framework. I wanted to add

4/1/20

Ronnie76, … Andrew Chandler4

7/14/19

error: unreported exception UnsupportedBusNumberException; must be caught or declared to be thrown

Oh that is awesome news Geert!

unread,

error: unreported exception UnsupportedBusNumberException; must be caught or declared to be thrown

Oh that is awesome news Geert!

7/14/19

Nicola Cisternino

3/13/19

Pi4J + OpenHAB + PiFace Digital 2

Hi all. I've correctly installed Pi4J on a "Pi3+PiFace Digital 2 board" and all PiFace

unread,

Pi4J + OpenHAB + PiFace Digital 2

Hi all. I've correctly installed Pi4J on a "Pi3+PiFace Digital 2 board" and all PiFace

3/13/19

2/28/19

Pi4J VERSION 1.2 IS RELEASED!

Version 1.2 of the Pi4J Library is finally released! http://www.savagehomeautomation.com/pi4j-1.2 The

unread,locked,

Pi4J VERSION 1.2 IS RELEASED!

Version 1.2 of the Pi4J Library is finally released! http://www.savagehomeautomation.com/pi4j-1.2 The

2/28/19

Martijn van Vloten

5/11/18

UART baudrate 500000

Hi everyone, Does pi4j work with a baud rate of 500000? The device I'm trying to control only

unread,

UART baudrate 500000

Hi everyone, Does pi4j work with a baud rate of 500000? The device I'm trying to control only

5/11/18

5/4/18

please, help Me.

How to deduce on seven-segment display by means of library pi4j using raspberry pi3? On which pins to

unread,

please, help Me.

How to deduce on seven-segment display by means of library pi4j using raspberry pi3? On which pins to

5/4/18

Steven F. Le Brun, … Robert Savage3

4/23/18

Raspberry Pi 3 B+ and pi4j not playing well together.

All, I was able to update the Pi4J 1.2-SNAPSHOT build today with the latest WiringPi. I have not had

unread,

Raspberry Pi 3 B+ and pi4j not playing well together.

All, I was able to update the Pi4J 1.2-SNAPSHOT build today with the latest WiringPi. I have not had

4/23/18

2/9/18

Scala Java maven project in ScalaIDE Eclipse workspace with demo code for MMA8451 in both languages

Have started a project involving the Raspberry Pi and prefer to program in Scala. Was able to port

unread,

Scala Java maven project in ScalaIDE Eclipse workspace with demo code for MMA8451 in both languages

Have started a project involving the Raspberry Pi and prefer to program in Scala. Was able to port

2/9/18

11/27/17

Blinking Pi Zero Activity LED

Hi, I have been reading that it is possible to turn on and off the activity LED on the Pi Zero (the

unread,

Blinking Pi Zero Activity LED

Hi, I have been reading that it is possible to turn on and off the activity LED on the Pi Zero (the

11/27/17

Airton Miguel Junior, SylZi2

11/10/17

fm radio tea5767 & raspberry

I see that tea5767 use I2C interface, that is supported by pi4j. So its should be possible to run it

unread,

fm radio tea5767 & raspberry

I see that tea5767 use I2C interface, that is supported by pi4j. So its should be possible to run it

11/10/17

Olivier Le Diouris

6/12/17

Exception in SoftPwmExample

Using 1.2-SNAPSHOT, I am trying to run the sample at https://github.com/Pi4J/pi4j/blob/master/pi4j-

unread,

Exception in SoftPwmExample

Using 1.2-SNAPSHOT, I am trying to run the sample at https://github.com/Pi4J/pi4j/blob/master/pi4j-

6/12/17

K Chand, … Steven F. Le Brun3

4/8/18

40 x 2 LCD Display not working

Are you connecting an LCD display directly to the Raspberry Pi GPIO or are you using an I2C LCD

unread,

40 x 2 LCD Display not working

Are you connecting an LCD display directly to the Raspberry Pi GPIO or are you using an I2C LCD

4/8/18

4/27/17

Reading button states from a 4DPi-24-HAT

Ok, after some internal testing/fiddling, plus some (more) digging, I have found the following: -

unread,

Reading button states from a 4DPi-24-HAT

Ok, after some internal testing/fiddling, plus some (more) digging, I have found the following: -

4/27/17

3/24/17

Unsupported major.minor version 52.0

Hi, I get the 'Unsupported major.minor version 52.0' error message when I try to run a simple

unread,

Unsupported major.minor version 52.0

Hi, I get the 'Unsupported major.minor version 52.0' error message when I try to run a simple

3/24/17

3/19/17

Too much idea, too much enthusiasm, too much excitement but too few time...

Hi, I've started a project called RaspInLoop. Its goal is to simulate the raspberry pi board

unread,

Too much idea, too much enthusiasm, too much excitement but too few time...

Hi, I've started a project called RaspInLoop. Its goal is to simulate the raspberry pi board

3/19/17

Brian Acken, Robert Savage3

2/28/17

Is there a way to trigger GPIO event based on time of day or possibly every few days?

Thank you! I'll take a look at this On Tuesday, February 28, 2017 at 12:22:28 PM UTC-5, Robert

unread,

Is there a way to trigger GPIO event based on time of day or possibly every few days?

Thank you! I'll take a look at this On Tuesday, February 28, 2017 at 12:22:28 PM UTC-5, Robert

2/28/17

2/15/17

serial configuration and 9 bit, mark, space and timming

I've got a few questions about the serial interface that I couldn't figure out from the code

unread,

serial configuration and 9 bit, mark, space and timming

I've got a few questions about the serial interface that I couldn't figure out from the code

2/15/17

2/14/17

bluej and jar file

i have a small project on my pi3 while runing my progrem from the bulej SystemInfo.getSerial() is

unread,

bluej and jar file

i have a small project on my pi3 while runing my progrem from the bulej SystemInfo.getSerial() is

2/14/17

Alex Noble, … synergi...@gmail.com7

5/12/17

MCP23008 LCD (Adafruit i2c Backpack)

Hello, I have also tried to use MCP23008 (Adafruit LCD) with "GpioLcdDisplay" or "

unread,

MCP23008 LCD (Adafruit i2c Backpack)

Hello, I have also tried to use MCP23008 (Adafruit LCD) with "GpioLcdDisplay" or "

5/12/17

David Albert, Robert Savage3

12/9/16

Counter support

Hi David, No, there is no counter impl currently in Pi4J. I looked at the article that you suggested

unread,

Counter support

Hi David, No, there is no counter impl currently in Pi4J. I looked at the article that you suggested

12/9/16

Michael Mühlhauser

12/5/16

Hi, I'am trying to read data from a HMC5833L sensor on my raspberry pi 3. When I run the code

unread,

Hi, I'am trying to read data from a HMC5833L sensor on my raspberry pi 3. When I run the code

12/5/16

Pablo Rodrigo A.B, … Steve Kim3

11/1/16

Reading signals with MCP3008

Type "SPI interface daisy chain" in the Google search engine. This search will show how to

unread,

Reading signals with MCP3008

Type "SPI interface daisy chain" in the Google search engine. This search will show how to

11/1/16

10/12/16

SerialDataEvent.lenght = 0 ?????

Hello all SerialDataEvent.lenght = 0 ????? i must put this code if (SerialDataEvent.length() != 0 )

unread,

SerialDataEvent.lenght = 0 ?????

Hello all SerialDataEvent.lenght = 0 ????? i must put this code if (SerialDataEvent.length() != 0 )

10/12/16

Capt.D, … Robert Savage7

9/20/16

pin.pulse compilation issue

I think you will find it easier to start with SE. These days the Oracle SE JVM/JDK come pre-installed

unread,

pin.pulse compilation issue

I think you will find it easier to start with SE. These days the Oracle SE JVM/JDK come pre-installed

9/20/16

7/27/16

Pi4J VERSION 1.1 IS RELEASED!

Pi4J Version 1.1 has now been synced to the Maven Central Repository. http://search.maven.org/#search

unread,locked,

Pi4J VERSION 1.1 IS RELEASED!

Pi4J Version 1.1 has now been synced to the Maven Central Repository. http://search.maven.org/#search

7/27/16

Tom Tibbetts, Robert Savage4

4/23/16

Introducing a new way to configure the Raspberry Pi using a web interface.

Code repository is posted: https://github.com/tomtibbetts/Breezy I finally learned basic Github and

unread,

Introducing a new way to configure the Raspberry Pi using a web interface.

Code repository is posted: https://github.com/tomtibbetts/Breezy I finally learned basic Github and

4/23/16

1/26/16

MCP23008 as Input Errors

Hi there, I have configured a MCP23008 expander as Digital Input and i have the following errors.

unread,

MCP23008 as Input Errors

Hi there, I have configured a MCP23008 expander as Digital Input and i have the following errors.

1/26/16

1/24/16

I2C producer consumer pattern for MCP23008 and Arduino

Hi, Can someone help me implement producer consumer pattern for i2c ? Right now i am working on a

unread,

I2C producer consumer pattern for MCP23008 and Arduino

Hi, Can someone help me implement producer consumer pattern for i2c ? Right now i am working on a

1/24/16

Robert Savage, … manfred....@gmail.com6

7/27/16

Pi4J Now Supports Non-Privileged Access (no more root/sudo)

This feature is now available in the latest v1.1 release of Pi4J. http://www.savagehomeautomation.com

unread,

Pi4J Now Supports Non-Privileged Access (no more root/sudo)

This feature is now available in the latest v1.1 release of Pi4J. http://www.savagehomeautomation.com

7/27/16

Search

Clear search

Close search

Google apps

Main menu