This Arduino failsafe protects a tremendous yard observatory
June third, 2025
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Nothing fairly compares to the sensation of trying up on the cosmos on a darkish evening, and even an reasonably priced telescope can improve that have. However in the event you’re keen to spend the money and time, you may take issues a lot additional. That’s what Redditor CosmicRuin did after they constructed a tremendous yard observatory. They usually not too long ago designed this Arduino-based failsafe to guard that observatory within the occasion of an influence outage.
CosmicRuin’s Tremendous RobDome observatory will make each beginner astronomer seethe with envy. It’s, basically, a smaller model of the varieties of significant observatories you’ll see on darkish mountaintops all over the world. And like these, this observatory has a dome. That’s there to guard the telescope and different gear from the weather, and to dam as a lot of the encircling gentle as attainable.
But when the mains energy fails, the dome wouldn’t have the ability to shut and supply safety. CosmicRuin used an Arduino UNO Rev3 board to detect such an influence outage and mechanically shut the dome if it does, whereas operating on energy from a battery backup system.

The Arduino displays mains AC voltage by way of a MCP6002-based Grove sensor. If that drops beneath a set threshold, both from a brownout or an entire blackout, it is going to flip a relay linked to the dome’s controller and that tells it to maneuver to the “house” place and shut the quilt. As a result of it runs on a battery backup, it will probably do this even when the ability is totally out.
Now CosmicRuin can relaxation simple understanding their costly gear is secure always.