Category Archives: Uncategorized

esp32, deep sleep and mqtt

Posted on April 15, 2019 by Michael Glauche

I saw a lot of posts about sending mqtt messages from an esp32/esp8266 with deep sleep between the sending cycles. This works fairly well as long as you keep a some time for the message to transmit before the deep … Continue reading →

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Persisting Joda-Time Fields with openjpa

Posted on January 5, 2013 by Michael Glauche

Lately i became curious about how to store joda-time objects into a database with openjpa. Well, its supprisingly easy if you only want to store/retrieve the objects: import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import org.apache.openjpa.persistence.Persistent; import org.joda.time.DateTime; @Entity public class … Continue reading →

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Reducing Raspberri PI’s memory usage

Posted on August 10, 2012 by Michael Glauche

I just got my Raspberry pi recently and found this really usefull link for tuning Raspbian to use less memory : http://extremeshok.com/blog/debian/raspberry-pi-raspbian-tuning-optimising-optimizing-for-reduced-memory-usage/

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Git with Jenkins

Posted on March 30, 2012 by Michael Glauche

Recently I did try to use jenkins together with git on windows. During configuration i stumbled along some blogpost that advised to use git.cmd instead of git.exe (which does set some more enviromnent variables, for example %HOME% to use _nettrc … Continue reading →

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