Computer Controller Beer Fermentation

I’ve spent this and the last weekend soldering together a bunch of circuitry that I can use to control my beer brewing process. I have built three calibrateable temperature sensors and two circuits to drive two different relays. There will then be connected to an Arduino that will be the brains. The temerature sensors will [...]

How To Force Eject a CD or DVD on a Mac

If you ever end up with a CD or DVD stuck in your Mac, and you can’t do a mechanical force eject because you don’t actually have a hole in which to poke your cdrom-drive through, you are still not without hope. The trick is to do a cold start with the computer (shut it [...]

The technical description of a 802.11 MAC

It is fairly simple. The MAC sits on the ground, trying to look as tempting as possible. The frames come flying through the air from the Internet. Once a frame is close enough to the MAC, it will be caught and “eaten”. Once it has been eaten, it will be “digested, ie. we take care [...]