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A 3-channel fully automated Dew Controller (DIY project) based on Arduino Nano for telescopes. For $48 or less. (c) Copyright Robert Brown 2014-2025. All Rights Reserved. Permission is granted for personal and Academic use only. Code or portions of code may not be copied or used without appropriate credit given to author. A very popular project with over 48,000 downloads. There is a new ESP32 WiFi version at https://sourceforge.net/projects/esp32-dew-controller/ The older myDCP2 (two-channel dew controller) is found here https://sourceforge.net/projects/arduinonanodewcontrollerpro/files/myDewController%20v200%202channel/

...For the casual user, this program allows you to truly become familiar with the solar system. Flying a space ship with unlimited fuel, lots of dials to guide you to your destination, and one less dimension to worry about, you can experience the vast distances, enormous speeds and tremendous power of gravity first hand as you travel around the solar system. Yet you will find that space travel still require great skill and patience to master. However, it will also give you the context to understand these huge numbers when you read about space stories in the newspapers. ...