Expanded my previous circuit with the DFPlayer Mini to now activate an arduino servo from 0 – 180 degrees while playing an audio file of a garage door. When pressed again, the servo reverts back from 180 – 0 and again plays the audio file. Six of these will be used to control the bay doors on the Walthers diesel house.
In the process of expanding my knowledge and experience with Arduino microcontrollers I’ve taken the base circuit for the welder I created and added sound. To do this I used a small board called DFPlayer Mini. This provides a direct output for a speaker or left / right channels. It also has a mini SD card port for your mp3 or wav files. See the details inside.
Continue reading Electronics: Arduino Welder with Sound