Viewing AAG Solo's Data Log

Posted on: Wed, 01/08/2018 - 20:53 By: Peter


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.

Temperature-Humidity Meter

Posted on: Wed, 23/05/2018 - 13:19 By: Peter


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”.


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.

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