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I replaced my $60 Raspberry Pi with a $5 ESP32 and my smart home never noticed
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Fusion42 · 29 July 2026 · Fusion42 review
An author details successfully replacing a $60 Raspberry Pi, a full single-board computer, with a $5 ESP32 microcontroller for reading sensors in a home automation system. The much cheaper and more power-efficient component handled the task without any degradation in performance.
This Wire brief sits within Fusion42's coverage of Deep Tech: IoT & Edge. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.
◆ ◆ The Wire takeaway
Your bill of materials is probably too high. An ESP32 can now handle edge compute tasks that once required a full single-board computer, at a tenth of the cost.
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