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...
...You can see more info about these modules here: http://bb-elec.com The 232SDA12 has 11 analog inputs, 4 digital inputs, and 4 digital outputs.
Use the installer here: http://jimroal.com/exe/SDA232/publish.htm