Matthias A Lee

Matthias Lee is a Software Performance Engineer, Technical Lead and Computer Science PhD. Currently a Lead Performance Engineer at Appian.

Building the Open-Electronics.org GSM/GPRS Shield V2

I got one of these SIM900 based GSM Arduino shields and decided to write a little step-by-step guide of building this shield. For schematics and the official documentation have a look here. Happy building! Lets start by soldering on microphone and speaker jacks: Clip the two separate jacks into place, you might need to...

Use the "SWAP" (on your VPS)

SWAP space can be a life saver. If your are like me, you may often find yourself messing with VPSes and other servers. All too often these are provisioned with very little RAM, 512MB or less. When your applications/processes run out of RAM, most of them become relatively unhappy and begin to behave...