About a week ago I wrote about a Darth Vader voice changer that I am making. I finally have finished a prototype but not without problem. I soldered all the external components to the Velleman MK171 kit. When I tested the circuit I discovered that three red push-buttons (see images below) weren’t functioning. I disconnected all four red push-buttons and tested them on a breadboard with an LED. They all worked fine. I reconnected the buttons to the kit and again three of them didn’t work. Running out of ideas and time I decided to use the regular mini push-buttons instead that came with the kit. The voice changer works excellent and the sound is loud (due to the 2 inch speaker and the box) and resembles Darth Vaders however changing the voice requires opening the enclosure which is far from ideal.
There is still a little work left. I have to attach the mic to the inside of the Darth Vader mask and I need something to easily lock and unlock the back of the enclosure.
Here is a link to part 3: https://homehack.nl/making-a-darth-vader-voice-changer-part-3