Pseudonymous maker “gokux” has designed a remote-control for these occasions when your out-of-the-way wi-fi router goes unresponsive or in any other case wants a fast reboot — utilizing a pair of Espressif ESP32 microcontrollers speaking instantly with one another to set off an influence cycle, even when the router’s Wi-Fi is down.
“In case you have a Wi-Fi connection, chances are you’ll encounter some issues together with your Wi-Fi router, resembling disconnecting from the web. More often than not, you’ll be able to repair this concern by energy biking your router,” gokux explains. “To make this course of simpler, I’ve created a wi-fi change that permits you to flip the router on and off with no need to be close to it. Press a button at your desk, and the router will probably be turned off for 2 seconds, after which it can flip again on routinely.”
The thought of a distant management for the router is an efficient one, with one key drawback: in case your distant depends on a Wi-Fi connection, how will it work when the issue the distant is designed to repair is that the Wi-Fi is down? The reply is easy: the Seeed Studio XIAO ESP32C3 boards within the distant and receiver by no means hook up with the router’s Wi-Fi community, however speak instantly to one another utilizing Espressif’s ESP-NOW protocol.
Housed in 3D-printed instances, the distant management is easy: the sender is nothing greater than a 3D-printed chunky push-button change, which triggers the transmission on its inside microcontroller; the receiver has an identical microcontroller plus a MOSFET and step-down buck converter, and is designed to sit down in-line on the router’s 12V energy enter. When the sign is obtained, the MOSFET interrupts the ability briefly — triggering a reboot.
Full directions for constructing your individual remote-reboot management system can be found in gokux’s Instructables web page, together with recordsdata for 3D printing the housings, supply code, and a full invoice of supplies.