via HACKADAY: Teddy Ruxpin: Navigate to 143 Main Street

In the United States, TV and radio stations have to give the opportunity of equal airtime to all candidates. In that spirit, we thought we should show you [Jayden17’s] hack that puts Google Assistant into a Teddy Ruxpin. You can see the hacked bear do its thing in the video below.

Teddy was the best-selling toy for 1985 and 1986, and is still available, so over 30 years there are a lot of these hanging around. If you never looked at how they work, the original ones were quite simple. A cassette player routed one stereo channel to a speaker and used the other channel to control servo motors to move the mouth and eyes. The cassette was eventually replaced with a digital cartridge, and newer versions of Teddy only use two motors instead of the three in the original.

[Jayden17’s] bear was an original “Worlds of Wonder” bear which means it is from the 1985-1990 time period. If you have a newer bear, you might have to work things out a little differently. These bears often have stuck motors, which can be fixed and broken cassette mechanisms. The cassette isn’t used with this project, so that’s not a problem.

The real key to the project is an Arduino that listens to the audio coming in from a smartphone or other source and drives the motors. The project just uses a cable for the phone, although we would have been tempted to put a cheap Bluetooth receiver in there. However, because of the way it is set up, you could easily do that. You could also use a Raspberry Pi or even switch to Alexa. The Arduino doesn’t know anything about the source audio.

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