Jun 08 2018
An instrument shelter provides a flow of air around weather sensors while protecting them from direct sunlight and rain. Without a shield, the sun can heat the temperature sensor giving a false high-temperature reading. Professional weather stations use a large louvered box called a Stevenson Screen that is built to specific dimensions for standardized weather …
Permanent link to this article: https://w4krl.com/diy-instrument-shield/
Jun 07 2018
The D1M-WX1 and D1S-WX1 solar-powered weather stations heat up in direct sunlight giving an incorrectly high-temperature reading. Early results from testing an Acurite solar radiation shield are very good. The shield is available from several online vendors. Check around for a good price as the same item sells for $10 to $60 from different vendors. …
Permanent link to this article: https://w4krl.com/solar-radiation-shield-under-test/
May 21 2017
Most electronic projects operate on low voltage direct current. This is often provided by a USB connection or a battery. There are several possibilities to power a project from the 120 Vac power line. A common way is to use a wall adapter (wall wart) and feed low voltage direct current to your project through …
Permanent link to this article: https://w4krl.com/power-supply-measurements/