This Building Sucks  (literally)

This Building Sucks (literally)

Today the doors to the new Science Hall at SUNY New Paltz are really hard to open.   There is a howling sound as wind screams its way through the cracks between the doors, which goes away temporarily as you open…

Cosmic Watch cost estimate

Cosmic Watch: Initial Cost Estimate

CosmicWatch is a small, inexpensive, home-built (or lab-built) cosmic ray detector designed by the Laboratory for Nuclear Science at MIT.     I’ve set out to build one, and this is Episode 2 of the adventure. The claim is that “single…

DHCP daemon on Raspberry Pi

DHCP stands for “Dynamic Host Configuration Protocol”.    The DHCP daemon is the process which assigns IP addresses to computers when they join a network, and gives them other important information about the network. Here is how to set up…

The Compartment Box Trick

Have you ever taken something apart and then put it back together and had parts left over? Me too. Sometimes it’s something I know isn’t needed, but it’s still better to get everything back in the right place. A few…

hostapd on Raspberry Pi

The daemon hostapd is a Linux service which enables  a “host” computer to become a wifi Access Point (AP).     Thus  “host” + “AP” + “d”  (for daemon) gives the name hostapd. I originally learned to set up hostapd from …

CosmicWatch Project, Episode 1: Getting Started

CosmicWatch is an inexpensive “home-built” cosmic ray detector designed by physicists at the Laboratory for Nuclear Science at MIT.   You can read more about it here: http://cosmicwatch.lns.mit.edu/about The claim is that a college student can build one of these as a project…

Raspberry Pi Initial Configuration

Whenever I flash a new SD card with a Raspbian image, there are a number of configuration steps that are needed to tune the configuration.    This post is just to record the steps for my own future reference. It’s…

Van de Graaaaafffff!

My colleague and friend Glenn Geher from the New Paltz Psychology department was visiting our new building, and so I showed him around our teaching lab space.    He was especially excited about the Van de Graaff generator, so I…

Wooster Hall stairs at Solar Noon on the Vernal Equinox, 2018

Vernal Equinox in Wooster Hall

The newly updated Wooster Hall has a neat feature at the bottom of the stairwell between the first and second floors. Above that stairwell there is a large skylight with 4 windows, and at the bottom of the stairs there…

Figure 3: Case screws

Repairing a Cenco 33031 Power Supply

by Laurence Rowe and Eric Myers We use the Cenco 33031 Low Voltage Power Supply (Figure 1) for several of our electricity and magnetism labs.   It can provide variable DC up to 6 Volts at up to  5 Amps, and…

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