ESP32: assign a static IP and reserve it in the router
Give an ESP32 a fixed IP with WiFi.config(), reserve it in your router with a DHCP reservation, and stop hunting the network for a device that moved.
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#static-ip
2 tutorials
Pico W: set a static IP for a reliable local device
Give a Pico W a fixed IP address with MicroPython so bookmarks, port forwards, and automations keep working after the router reboots.