Chapter · Wi-Fi
On your ESP32
The ESP32 on the bench, its band, its antenna and its power, and how to find the fault when it says connected but nothing works.
- 12The ESP32 on the bench5 minMost ESP32 chips have a 2.4 GHz radio only. A hand or a metal case near the antenna costs signal, the radio draws a burst of current when it transmits, and ADC2 is shared with Wi-Fi on the ESP32, S2 and S3.
- 13Connected, but nothing works5 minWhen an ESP32 says connected and nothing works, check from the bottom up. Power, the band, the scan, the password, the signal, an address, then the way out, and fix the first that fails.
Start at 12 and read down — the order is the order things get easier in. Or take the one with your part in it; every article stands on its own, and links back to whatever it needs.