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Aness
4/21/20
Q&A
Save image from byte array returned by Raspberry Pi UART Camera
I'm not sure if cross posting questions is allowed, but I thought that I might have more luck
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java
serial
uart
Q&A
Save image from byte array returned by Raspberry Pi UART Camera
I'm not sure if cross posting questions is allowed, but I thought that I might have more luck
4/21/20
Sławomir Korman
4/1/20
Q&A
PI4J in Struts2 Action
Hi, I liked mych PI4J I have a question regaring usung PI4J in Struts2 Web framework. I wanted to add
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java
raspberrypi
Q&A
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 Chandler
4
7/14/19
Q&A
error: unreported exception UnsupportedBusNumberException; must be caught or declared to be thrown
Oh that is awesome news Geert!
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MCP23017
gpio
i2c
java
pi4j
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rpi
Q&A
error: unreported exception UnsupportedBusNumberException; must be caught or declared to be thrown
Oh that is awesome news Geert!
7/14/19
Robert Savage
2/28/19
Announcement
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,
announcements
gpio
java
notice
pi4j
raspberrypi
release
rpi
Announcement
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
Synapsido
8/8/18
Q&A
Move servo to certain angle
Hi, How to move the servo motor to specific angle, (0º, 90º ... 180º) Someone have an example...?
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java
motor
pi4j
Q&A
Move servo to certain angle
Hi, How to move the servo motor to specific angle, (0º, 90º ... 180º) Someone have an example...?
8/8/18
Developer42
5/10/18
Q&A
How to Translate code Python to Java Pi4j
Hello eveybody, I need help, I wrote the following code in python and how can I do it using pi4j Java
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gpio
java
pi4j
Q&A
How to Translate code Python to Java Pi4j
Hello eveybody, I need help, I wrote the following code in python and how can I do it using pi4j Java
5/10/18
Dzmitry Suhlob
5/4/18
Q&A
please, help Me.
How to deduce on seven-segment display by means of library pi4j using raspberry pi3? On which pins to
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gpio
java
pi4j
raspberrypi
Q&A
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 Savage
3
4/23/18
Q&A
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
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gpio
java
pi4j
raspberrypi
rpi
Q&A
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
Tom Moyer
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
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gpio
i2c
java
pi4j
raspberrypi
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
dwa...@millersoftwaresolutions.com
12/24/17
Q&A
pi4j and MCP23017 - reading and writing device registers
I have connected an Adafruit 16x2 plate that uses the MCP23017 expander to control a 16x2 LCD display
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MCP23017
gpio
i2c
java
pi4j
Q&A
pi4j and MCP23017 - reading and writing device registers
I have connected an Adafruit 16x2 plate that uses the MCP23017 expander to control a 16x2 LCD display
12/24/17
Mark Wilson
11/27/17
Q&A
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
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gpio
java
pi
pi4j
raspberrypi
Q&A
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
SylZi
2
11/14/17
Q&A
How to get value of voltage from ADS1015
Here I found solution: https://stackoverflow.com/questions/15705843/how-do-i-best-return-a-value-from
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gpio
java
pi4j
Q&A
How to get value of voltage from ADS1015
Here I found solution: https://stackoverflow.com/questions/15705843/how-do-i-best-return-a-value-from
11/14/17
Airton Miguel Junior
,
SylZi
2
11/10/17
Q&A
fm radio tea5767 & raspberry
I see that tea5767 use I2C interface, that is supported by pi4j. So its should be possible to run it
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java
raspberrypi
Q&A
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
Peter Jeschke
6/26/17
Q&A
SPI answer repeats sent bytes
I'm using Pi4J to write to a SPI interface. This issue occurs in a big application, but I managed
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java
pi4j
spi
Q&A
SPI answer repeats sent bytes
I'm using Pi4J to write to a SPI interface. This issue occurs in a big application, but I managed
6/26/17
Edward Roberts
4/23/17
Q&A
WiringPi still needs to run as root?
I have a working java application that I would like to add a gui to. When I run it as non-root (in
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gpio
java
pi4j
Q&A
WiringPi still needs to run as root?
I have a working java application that I would like to add a gui to. When I run it as non-root (in
4/23/17
simon
2
3/31/17
Q&A
pi4j max17043 lipo fuel gauge i2c library help
hey sry for the big black code block i can't find a edit button for the post but here is a past
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i2c
java
pi4j
Q&A
pi4j max17043 lipo fuel gauge i2c library help
hey sry for the big black code block i can't find a edit button for the post but here is a past
3/31/17
magher
3/24/17
Q&A
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
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install
java
jdk8
pi4j
raspberrypi
Q&A
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
raspinloop
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
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java
pi4j
raspberrypi
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 Savage
3
2/28/17
Q&A
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
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gpio
java
programming
raspberrypi
Q&A
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
Tal Katz
2/14/17
Q&A
bluej and jar file
i have a small project on my pi3 while runing my progrem from the bulej SystemInfo.getSerial() is
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java
pi4j
raspberrypi
Q&A
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
Michael Mühlhauser
12/5/16
Q&A
HMC5833L
Hi, I'am trying to read data from a HMC5833L sensor on my raspberry pi 3. When I run the code
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java
pi4j
raspberrypi
Q&A
HMC5833L
Hi, I'am trying to read data from a HMC5833L sensor on my raspberry pi 3. When I run the code
12/5/16
Bashar A.Asaad
10/12/16
Q&A
SerialDataEvent.lenght = 0 ?????
Hello all SerialDataEvent.lenght = 0 ????? i must put this code if (SerialDataEvent.length() != 0 )
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MCP23008
MCP23017
gpio
java
pi4j
raspberrypi
serial
Q&A
SerialDataEvent.lenght = 0 ?????
Hello all SerialDataEvent.lenght = 0 ????? i must put this code if (SerialDataEvent.length() != 0 )
10/12/16
Capt.D
, …
Robert Savage
7
9/20/16
Q&A
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
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java
pi4j
raspberrypi
Q&A
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
Robert Savage
2
7/27/16
Announcement
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,
announcements
gpio
java
notice
pi4j
raspberrypi
release
rpi
Announcement
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 Savage
4
4/23/16
Q&A
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
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MCP23017
gpio
java
jdk8
pi-face
pi4j
piface
raspberrypi
Q&A
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
Jorgen Wortel
, …
Robert Savage
4
3/16/16
Q&A
RCSwitch implementation works in Pi4j 0.0.5 and not in 1.0
How can I help, I'm not sure where to start? If its a matter of GPIO switching speed .. then yes
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gpio
java
pi4j
Q&A
RCSwitch implementation works in Pi4j 0.0.5 and not in 1.0
How can I help, I'm not sure where to start? If its a matter of GPIO switching speed .. then yes
3/16/16
Harald SATTMANN
,
Kyle Godett
7
2/16/16
Q&A
I2C - use of REPEATED START in reading date from slave MMA8452Q
Hi Found the solution. You are right. Your codesnippet solves the problem after I set the combined
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i2c
java
pi4j
rpi
Q&A
I2C - use of REPEATED START in reading date from slave MMA8452Q
Hi Found the solution. You are right. Your codesnippet solves the problem after I set the combined
2/16/16
Lee Bethune
2
1/27/16
Q&A
Problem with multiple byte writes
Solved On Wednesday, January 27, 2016 at 11:09:11 AM UTC-5, Lee Bethune wrote: Trying to get serial
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java
pi4j
Q&A
Problem with multiple byte writes
Solved On Wednesday, January 27, 2016 at 11:09:11 AM UTC-5, Lee Bethune wrote: Trying to get serial
1/27/16
GeertVc
,
Robert Savage
3
3/16/16
Q&A
Files are changed during mvn compile process
Your pull-request to fix this issue was recently merged. https://github.com/Pi4J/pi4j/pull/211 I
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java
maven
Q&A
Files are changed during mvn compile process
Your pull-request to fix this issue was recently merged. https://github.com/Pi4J/pi4j/pull/211 I
3/16/16
Robert Savage
12/14/15
Announcement
Raspberry Pi with Java: Programming the Internet of Things (IoT)
Raspberry Pi with Java: Programming the Internet of Things (IoT) by Stephen Chin and James L. Weaver
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gpio
iot
java
javafx
pi4j
programming
raspberrypi
rpi
Announcement
Raspberry Pi with Java: Programming the Internet of Things (IoT)
Raspberry Pi with Java: Programming the Internet of Things (IoT) by Stephen Chin and James L. Weaver
12/14/15