3D Printed Flip Clock Is Worth A Second Look

Flip clocks: they were cool long before Bill Murray was slapping one repeatedly in Groundhog Day, they were cool in 1993, and they’re still cool now. If you can’t find one on the secondhand market, you’re in luck, because [iz2k] has laid out an extensive blueprint for building a gorgeous retro-looking clock with some modern touches.

There’s a Raspberry Pi to fetch the time, the weather, and the Spotify. Old flip clocks invariably tuned in FM radio, so [iz2k] used an RTL-SDR dongle and a software decoder for the deed. This clock even has a big snooze bar, which functions like a night light when there is no alarm actively going off. The three groups of painstakingly-printed flaps are controlled with stepper motors and an IR transmitter/receiver pair to do the counting.

For the interface, [iz2k] kept things nice and simple. The big-knobbed rotary encoder handles volume up/down/mute, and the little one on the front switches between FM radio, Spotify, and silence. Moving either knob generates feedback by flashing LEDs that sit underneath the display. Take a few seconds to flip past the break and check out the short demo.

If you do find a nice flip clock out in the wild, maybe you can retrofit it.

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Retro Flip Clock Gets A Retrofit

Retro tech is almost always ripe for the hacking — be it nostalgia, an educational teardown, or acknowledging and preserving the shoulders upon which we stand. Coming across an old West-German built flip clock, YouTuber [Aaron Christophel] retrofitted the device while retaining its original mechanical components!

No modern electronics are complete without LEDs of some kind, so he has included a strip in the base of the clock face for visibility and cool factor. He doesn’t speak to the state of the clock beforehand, but he was able to keep the moving bits of the clock working for its second shot at life.

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Exposed Clock Is Flippin’ Cool

Some hacks are triumphs of cleverness, others…are just cool. [Super Cameraman’s] exposed retro flip clock tends toward the latter half of that spectrum—it may not be the most complex, but we’re relieved that for once there isn’t an Arduino crammed into the back of it.

You can buy pared down, exposed flip clocks at museums for an arm and a leg, or you can trudge through eBay and local thrift shops until you come across a cheapo clock radio. [Super Cameraman’s] clock cost him exactly $2, and is split into two sections: a clock side and a radio side. Prying off the knobs and popping open the case reveals all the shiny mechanisms and electronics, most of which he trashed. The radio and even the transformer were removed, leaving only the flip clock, which he re-wired directly to the plug—it seems these types of clocks run straight off 120VAC. Check out the video below.

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