Blog

postgresql hstore is easy to compare

hstore is an option key=>value column type that's been around in postgresql for a long time. I was looking at it for a project where I want to compare "new data" to old, so I can approve it. There is a hstore-hstore option that compares two hstore collections and shows the differences.

Programming Uniden AMH-350 for APRS

This is a narrative post. If you want to see my python program that calculates out the diode matrix, skip to the end or click here,

LaView DVR access from zoneminder/vlc

Finally connected my DVR to the network. It's an LaView lv-d0404bs (4-ch dvr). I searched all over and couldn't find an rtsp url for this model. Finally, I did what I should have done, and opened the source of the web page.

rPI DPI Display, cheap.

Recently the internet noticed the Raspberry Pi could drive LCD panels using DPI. This allows very inexpensive displays to be used with basically no additional hardware.

Enter the Matrix

I used to be a big proponent of xmpp. However, over the years my enthusiasm has waned for it. I'm not the only one. Essentially, these days if your chat service is not done over HTTP(s), and if it doesn't have persistence, your chat service is now legacy. Yes, I still enjoy IRC, and I think it's great for ephemeral communications. But in this multi-device, mobile world, it's hard to use IRC as a daily driver for my friends and coworkers.