SMS‑Controlled Smart AC Power Switch with Raspberry Pi & Hologram
Combine a Raspberry Pi, Nova Hologram, and an IoT relay to create a reliable remote smart switch that lets you toggle devices on or off via SMS.
Story
When our ISP modem occasionally locks up, a quick power cycle is the only way to restore service. While the ISP works on the underlying issue, I needed a way to reset the modem from anywhere, especially when traveling with my laptop.
I leveraged the Nova Hologram’s cellular connectivity and the Raspberry Pi’s versatility to build a SMS‑controlled remote power switch. After sourcing a suitable AC power module from Amazon, I integrated the Pi, Hologram, and IoT relay to achieve instant, remote control of the modem’s power state.
The implementation is based on a well‑documented project by Benstr, which I adapted for SMS input. This approach ensures a low‑cost, low‑power solution that can be replicated for any device requiring remote power cycling.
Source: Hologram SMS Controlled AC Power Switch
Manufacturing process
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