This is a project I have been working on for a very long time. I am finally at the point of writing it up. It’s been so long in fact I can’t even remember all the details so this will piece it together as best I can with lots of pictures and some vague descriptions of what’s going on.
Basically it’s my John Steed marionette. John Steed of course being one of the two main characters form the 60s television programme The Avengers. The other (best known) main character being Mrs Peel.
Adding quality audio to an electronic project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to 22KHz, 12bit uncompressed audio files of any length. It’s low cost, available as an easy-to-make kit. It has an onboard DAC, filter and op-amp for high quality output. Audio files are read off of an SD/MMC card, which are available at nearly any store. Volume can be controlled with the onboard thumbwheel potentiometer.Related
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