Introduction

The Native Instruments Komplete Kontrol software has a Scale mode which can be used to automatically indicate, map or form chords from the notes in a given musical scale.  There is a large number of available scales from the most common to some that are truly obscure.  If you know the scale you want you can just dial it up but, if your knowledge of all of these scales is limited, it can be difficult to find the scale that suits your needs.

The software presented here is designed to at least partially alleviate that problem.

Introduction

The AAG Cloudwatcher is a a box of sensors that can be used to monitor various weather conditions with the aim of closing the shutter/roof of an automated observatory when conditions are deemed unsafe.  A related piece of gear is the AAG Solo which is a small computer, based on a Raspberry Pi, which can read and display data from the Cloudwatcher via a web interface.

Introduction

One of the potential problems with the LED based flats panel I described in a previous article is that if the exposure time used for flats is too short the resulting images can show banding - sometimes quite severely.  The images below give a couple of examples.

Introduction

Xojo is a great tool for developing cross-platform applications from a single codebase.  It allows code to be developed and then built for any or all of the following desktop platforms:

Introduction

This project describes a simple device to measure temperature and relative humidity and displays their values, along with the apparent temperature, often describe as “feels like”.

Electronics

The Circuit

The sensor used is the ubiquitous DHT21, a digital sensor which in this case is read via a small MCU chip, an ATtiny84, and the output displayed on a 16 character by 2 line LCD display.

The circuit schematic is shown below, and dxf files are available for download at the bottom of the page.

UPDATE: Under certain circumstances it is possible that this panel can produce flats with moderate to severe banding.  An explanation of why this happens and how to fix it is given in this article.