Image: Fans and Fan Speed Contoller fitted to the DMR Repeater.
In the previous article I described the two PWM Fan Controllers that I purchased to install in the MMDVM Repeater to keep it cool during those hot summer days. I setup the controllers and tested them at different temperatures on the workbench. So far they work as expected. I fitted the two controllers in a 3D printed project box and installed it at the back of the DMR Repeater.
I opted to mount the fans on the outside of the repeater cabinet as the spacing inside the repeater cabinet makes it rather difficult to work on the fans and installing the controllers. By mounting the fans and fan controller box on the outside of the repeater cabinet, it is now easy to access the controllers and service/replace the fans when necessary.
The modification turned out quite well and the fans and controllers are working as it should. Herewith a few images of the repeater after installing the new fans and controllers.
Images: Click on images for larger view.
