ANNOUNCEMENT: OpenRocket 23.09 is now available for download

[Stargeezer]

Yes, I've triedn uninstalling and reinstalling. Both the new and the older version. I'm stuck with WIn 11 right now. I also have an iPad though OR doesn't run on that sadly. Hmmm.....

 

[thzero]

Yes, I've triedn uninstalling and reinstalling. Both the new and the older version. I'm stuck with WIn 11 right now. I also have an iPad though OR doesn't run on that sadly. Hmmm.....

Got specs for your device?

 

[cls]

It's open source, you could compile the parts you want to run on the platform you want.

you're right, in a perfect world I would. but I'm allergic to Java, seriously. if I could tackle it without retching I'd fix some other things, too, such as the Altus Metrum app.

 

[kjhambrick]

Yes, I've triedn uninstalling and reinstalling. Both the new and the older version. I'm stuck with WIn 11 right now. I also have an iPad though OR doesn't run on that sadly. Hmmm.....

I wonder if some other App installed Java on your machine and messed up the registry or your Java environment variables ...

I wonder what you would see if you opened a command prompt and typed: java -version

-- kjh

 

[NTP2]

you're right, in a perfect world I would. but I'm allergic to Java, seriously. if I could tackle it without retching I'd fix some other things, too, such as the Altus Metrum app.

I tried it once, I’ll stick with python.

 

[thzero]

It's open source, you could compile the parts you want to run on the platform you want.

I should try it since I have a couple of raspberry pis including one of the new pi5s

 

[thzero]

I tried it once, I’ll stick with python.

Java almost always shows up as one of the top languages used in the IT industry.

Looking at specialized industries, such as data scientists yes they use python a lot (its interpreted so can be run on the fly, but yes it can be compiled).

In other industries, neither is used much at all.

Anyone pursuing software development should really be able to program, and understand the fundamentals, then a language just becomes a language.

 

[NTP2]

I should try it since I have a couple of raspberry pis including one of the new pi5s

Please do, I am imaging a range box with a lid that on the inside has a screen and a PI that runs open rocket!! I’d call it my hacking system.

 

[NTP2]

Java almost always shows up as one of the top languages used in the IT industry.

Looking at specialized industries, such as data scientists yes they use python a lot (its interpreted so can be run on the fly, but yes it can be compiled).

In other industries, neither is used much at all.

Anyone pursuing software development should really be able to program, and understand the fundamentals, then a language just becomes a language.

I am (and don’t plan to be) in software I just know a little bit the most complex thing I did was a super simple encryption system for fun.

 

[thzero]

I am (and don’t plan to be) in software I just know a little bit the most complex thing I did was a super simple encryption system for fun.

I use tablets for this. OR works on a Chrome OS (I just don't like ChromeOS, prefer Windows or Linux). OR works just fine a Windows tablets.

Benefit of Linux (I have a surface pro 3 converted to Ubuntu) is its supposed to be able to (haven't get hack it fully working yet) connect to multiple WiFi networks. So for us with Eggtimers Quantums/Quasars/etc. that is nice if using more then one Eggtimer.

 

[Art Upton]

Java almost always shows up as one of the top languages used in the IT industry.

Looking at specialized industries, such as data scientists yes they use python a lot (its interpreted so can be run on the fly, but yes it can be compiled).

In other industries, neither is used much at all.

Anyone pursuing software development should really be able to program, and understand the fundamentals, then a language just becomes a language.

I could do that in my Programming Prime... Then I managed and then directed... you loose you skill a little after that.

 

[the random rocketer]

Ok I've installed Java 17 downloaded the latest open rocket package and tried to run the installer. I get this. I'm running the latest raspberry pi OS (debian 12 bookworm)

 

[the random rocketer]

This is on a Pi 5 with 8 gb memory (Broadcom BCM2712 quad-core Arm Cortex A76 processor @ 2.4GHz) so it should have enough umph to run.
Permissions issue? Wrong java version?

 

[the random rocketer]

 

[neil_w]

I'm not a Raspberry Pi or Linux expert but I would *think* that your best bet there is to install Java (11 or 17) and then run the jar file, rather than trying to use the installer. This is opposite to the advice I would normally give to Mac or Windows users (or desktop Linux users, for that matter).

 

[jmasterj]

Bundled Java is probably Intel, not ARM. Try the jar like Neil said.

 

[thzero]

Bundled Java is probably Intel, not ARM. Try the jar like Neil said.

Yup

 

[thzero]

I'm not a Raspberry Pi or Linux expert but I would *think* that your best bet there is to install Java (11 or 17) and then run the jar file, rather than trying to use the installer. This is opposite to the advice I would normally give to Mac or Windows users (or desktop Linux users, for that matter).

Yup

 

[kjhambrick]

This is on a Pi 5 with 8 gb memory (Broadcom BCM2712 quad-core Arm Cortex A76 processor @ 2.4GHz) so it should have enough umph to run.
Permissions issue? Wrong java version?

The Exec format error means you're trying to run code compiled for ( probably ) Intel x86_64 on your Arm CPU ...

I don't have a pi anymore and, I don't know for sure what the OpenRocket installer does so first make sure your jre and JAVA environment are still OK:

java -version

This is what I see on my intel Slackware Linux Box. you should see something similar:

[konrad@kjhlt7 ~]$ java -version
openjdk version "11.0.21" 2023-10-17
OpenJDK Runtime Environment (build 11.0.21+9)
OpenJDK 64-Bit Server VM (build 11.0.21+9, mixed mode)

If your `java -version` command still looks OK on your machine, maybe try this:

mkdir $HOME/test
cd $HOME/test
wget https://github.com/openrocket/openrocket/releases/download/release-23.09/OpenRocket-23.09.jar

if that works, I believe this is what Neil meant by 'run the jarfile'

java -jar $HOME/test/OpenRocket-23.09.jar

If the OpenRocket-23.09.jar runs, maybe make a generic script wrapper so you can manage it later ...

HTH ...

-- kjh

 

[NTP2]

The Exec format error means you're trying to run code compiled for ( probably ) Intel x86_64 on your Arm CPU ...

I don't have a pi anymore and, I don't know for sure what the OpenRocket installer does so first make sure your jre and JAVA environment are still OK:

java -version

This is what I see on my intel Slackware Linux Box. you should see something similar:

[konrad@kjhlt7 ~]$ java -version
openjdk version "11.0.21" 2023-10-17
OpenJDK Runtime Environment (build 11.0.21+9)
OpenJDK 64-Bit Server VM (build 11.0.21+9, mixed mode)

If your `java -version` command still looks OK on your machine, maybe try this:

mkdir $HOME/test
cd $HOME/test
wget https://github.com/openrocket/openrocket/releases/download/release-23.09/OpenRocket-23.09.jar

if that works, I believe this is what Neil meant by 'run the jarfile'

java -jar $HOME/test/OpenRocket-23.09.jar

If the OpenRocket-23.09.jar runs, maybe make a generic script wrapper so you can manage it later ...

HTH ...

-- kjh

+1

 

[thzero]

The Exec format error means you're trying to run code compiled for ( probably ) Intel x86_64 on your Arm CPU ...

Absolutely. The installers would be installing a JVM (java virtual machine) compiled for x86_64 vs Arm which are different CPU architectures. JVM is the virtual machine that runs the compiled Java bytecode on the actual machine platform.

 

[gdjsky01]

FWIW
Running the 23.09 jar works on my RP 5 4G

 

[neil_w]

FWIW
Running the 23.09 jar works on my RP 5 4G

Cool! Which JVM are you running, and do the 3D graphics work?

 

[gdjsky01]

me@raspberrypi:~ java --version

openjdk 17.0.9 23-10-17
OpenJDK 64-Bit Server VM (build 17.0.9+9-Debian-1deb12u1, mixed mode)


me@raspberrypi:~ java -jar ~/Downloads/OpenRocket-23.09.jar &

Yes, Using the demo Three-starge Rocket the 3D views work and the photostudio works

 

[neil_w]

Awesome!!!

 

[cls]

Excellent! Thanks, folks. I'll try it asap.

 

[NTP2]

My range box of my dreams is on the horizon!!!

 

[kjhambrick]

me@raspberrypi:~ java --version

openjdk 17.0.9 23-10-17
OpenJDK 64-Bit Server VM (build 17.0.9+9-Debian-1deb12u1, mixed mode)

me@raspberrypi:~ java -jar ~/Downloads/OpenRocket-23.09.jar &

Yes, Using the demo Three-starge Rocket the 3D views work and the photostudio works

Woo Hoo, Jeff !

Thanks for the feedback !

Good call appending the & to run the .jar in background mode !

-- kjh

 

[neil_w]

Update: @jddj has gotten OR running on his Pi4, using LXDE and 256 MB graphics memory. This includes 3D functions.

That's all I know for now.

 

[the random rocketer]

Happy dance time!! Downloading the .jar file does it. It opens and runs and on a pi 5 It's even snappy. I haven't had time to explore yet as I've got something else to do but will try it out fully later and report back. Install the Java runtime environment as per the instructions on the raspberry tips site. Then download the jar file from open rockets site. Run it with java -jar OpenRocket-23.09.jar