Archive for month: February, 2014

Products of Primes and the Primorial Function…

February 26, 2014 | Math | By: Mark VandeWettering

A friend of mine was working on a programming exercise, and it turns it out was based on a chunk of math which I thought I should have seen before, but either have not seen or have forgotten. It’s basically that the products of all primes less than some number n is less than or […]

The Minima — A General Coverage Transceiver

February 15, 2014 | Amateur Radio | By: Mark VandeWettering

A while ago, Bill Meara from Soldersmoke brought Ashar Farhan’s new design, the Minima to my attention. The Minima is a general coverage transceiver which has a lot of cool features. It’s a superhet design which is Arduino based (actually, it incorporates a bare bones Arduino, which is little more than an Atmel ATMega328 chip.) […]

Raspberry Pi Camera NoIR…

February 10, 2014 | Raspberry Pi | By: Mark VandeWettering

I’ve been playing around with the Raspberry Pi Camera for a number of different purposes, but one thing is pretty apparent right off: while the quality overall is quite good, it’s not very good in low light. Because at least part of my potential application is watching the night-time activities of wildlife (most likely my […]

Streaming Video From the Raspberry Pi Camera…

February 6, 2014 | Raspberry Pi | By: Mark VandeWettering

First of all, let me get this off my chest: video over the web is a hideous Tower of Babel. With that basic complaint, let me start by saying that this project started with a Raspberry Pi and the Raspberry Pi Camera. Previously, I had used the Pi with a USB webcam and had connected […]

An $8.88 WiFi adapter for my Raspberry Pi…

February 2, 2014 | Raspberry Pi | By: Mark VandeWettering

I was out running errands the other day, and found myself at Fry’s Electronics. I needed to pick up a VGA extension cable to replace one that had inexplicably become bad, and as I often do while wandering around, found myself doing a bit of window shopping. (Not Windows shopping, I’ve had enough of that.) […]