Sep28

speechlion with cmu sphinx doesn’t seem to like open jdk – gives SEVERE can’t open microphone error

Categories: carputer
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I found that once I installed SUNs java6 and ran
sudo update-alternatives –config java
it started working

Note that I’m using ubuntu and the instructions on speechlion say to run update-alternative. I don’t know if that was a typeo or not on their part.

So, with speechlion running I am one step closer to controling the system by speech. I had it working on the test bench but never in the car.

I want to make one more comment on CMU sphinx and java. Make sure you run the update-alternative(s) command because I found that even though I did an apt-get install in ubuntu that it wasn’t using the sun version until I did. I suppose if you never installed a different version of the java runtime it might not be a problem but better to make sure it is using the right one than to make an assumption.

I can’t tell you how hard it was to figure this out because no one bothered to document the issue with openjdk and cmu sphinx and the “Can’t open microphone null error”

Sep8

Car Battery protector low voltage shut off

Categories: carputer
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After much looking I finally found this CAR BATTERY PROTECTOR 12V-12V / MAX. 10A

The battery protector prevents appliances from draining the battery of your car. The device continuously monitors the voltage and charge status of your car battery.

Specifications

input voltage: DC 12V
connected voltage: 12.5V ± 0.3V
cutoff voltage: 11.2V ± 0.3V
maximum operating current: 10A (protected by 10A fuse) (PSPC10BP)

car battery protector low voltage cut off

I want my carputer on as long as possible but the problem is that my power supply won’t cut power until the battery goes to 8 or 9 volts. Hopefully this little thing will prevent a dead battery.

Sep5

More work on the carputer

Categories: carputer
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I drove down to Baltimore for a day trip to go to ARK Fest and meet up with some online people I knew through mp3car.com. Seeing some cool setups and talking about car computing really energized me. I’ve been playing with a lot of stuff.

1) working on voice commands and stuff using simon again.

2) tweaked my traffic screen a little

3) worked on fixing my weather.

I think I made lots of progress in the last week or so. I haven’t tested some of the stuff I did this weekend yet but if it works like it is supposed to my car computer should be one step closer to being where I want it to be.