This core ESPHome component sets up WiFi connections to access points for you. It needs to be in your configuration or otherwise ESPHome will fail in the config validation stage.
It’s recommended to provide a static IP for your node, as it can dramatically improve connection times.
# Example configuration entry wifi: ssid: MyHomeNetwork password: VerySafePassword # Optional manual IP manual_ip: static_ip: 10.0.0.42 gateway: 10.0.0.1 subnet: 255.255.255.0
ssid (Optional, string): The name (or service set identifier) of the WiFi access point your device should connect to.
password (Optional, string): The password (or PSK) for your WiFi network. Leave empty for no password.
networks (Optional): Configure multiple WiFi networks to connect to, the best one that is reachable will be connected to. See Connecting to Multiple Networks.
manual_ip (Optional): Manually configure the static IP of the node.
static_ip (Required, IPv4 address): The static IP of your node.
gateway (Required, IPv4 address): The gateway of the local network.
subnet (Required, IPv4 address): The subnet of the local network.
dns1 (Optional, IPv4 address): The main DNS server to use.
dns2 (Optional, IPv4 address): The backup DNS server to use.
use_address (Optional, string): Manually override what address to use to connect to the ESP. Defaults to auto-generated value. Example, if you have changed your static IP and want to flash OTA to the previously configured IP address.
ap (Optional): Enable an access point mode on the node.
ssid (Required, string): The name of the access point to create.
password (Optional string): The password for the access point. Leave empty for no password.
channel (Optional, int): The channel the AP should operate on from 1 to 14. Defaults to 1.
manual_ip (Optional): Manually set the IP options for the AP. Same options as manual_ip for station mode.
ap_timeout (Optional, time): The time after which to enable the configured fallback hotspot. Defaults to
domain (Optional, string): Set the domain of the node hostname used for uploading. For example, if it’s set to
.local, all uploads will be sent to
<HOSTNAME>.local. Defaults to
reboot_timeout (Optional, time): The amount of time to wait before rebooting when no WiFi connection exists. Can be disabled by setting this to
0s, but note that the low level IP stack currently seems to have issues with WiFi where a full reboot is required to get the interface back working. Defaults to
power_save_mode (Optional, string): The power save mode for the WiFi interface. See Power Save Mode
output_power (Optional, string): The amount of TX power for the WiFi interface from 10dB to 20.5dB. Default for ESP8266 is 20dB, 20.5dB might cause unexpected restarts.
fast_connect (Optional, boolean): If enabled, directly connects to WiFi network without doing a full scan first. This is required for hidden networks and can significantly improve connection times. Defaults to
off. The downside is that this option connects to the first network the ESP sees, even if that network is very far away and better ones are available.
id (Optional, ID): Manually specify the ID used for code generation.
Access Point Mode¶
ESPHome has an optional “Access Point Mode”. If you include
in your wifi configuration, ESPHome will automatically set up an access point that you
can connect to. Additionally, you can specify both a “normal” station mode and AP mode at the
same time. This will cause ESPHome to only enable the access point when no connection
to the WiFi router can be made.
wifi: ap: ssid: "Livingroom Fallback Hotspot" password: "W1PBGyrokfLz"
If you’re having problems with your node not connecting to WiFi or the connection process taking a long time, it can be a good idea to assign a static IP address to the ESP. This way, the ESP doesn’t need to go through the slow DHCP process.
You can do so with the
manual_ip: option in the WiFi configuration.
wifi: # ... manual_ip: # Set this to the IP of the ESP static_ip: 10.0.0.42 # Set this to the IP address of the router. Often ends with .1 gateway: 10.0.0.1 # The subnet of the network. 255.255.255.0 works for most home networks. subnet: 255.255.255.0
After putting a manual IP in your configuration, the ESP will no longer need to negotiate a dynamic IP address with the router, thus improving the time until connection.
Additionally, this can help with Over-The-Air updates if for example the
home network doesn’t allow for
.local addresses. When a manual IP is in your configuration,
the OTA process will automatically choose that as the target for the upload.
See also Changing ESPHome Node Name.
Power Save Mode¶
The WiFi interface of all ESPs offer three power save modes to reduce the amount of power spent on WiFi. While some options can reduce the power usage of the ESP, they generally also decrease the reliability of the WiFi connection, with frequent disconnections from the router in the highest power saving mode.
NONE(least power saving, Default for ESP8266)
LIGHT(Default for ESP32)
HIGH(most power saving)
wifi: # ... power_save_mode: none
Connecting to Multiple Networks¶
Starting with version 1.10.0, you can give ESPHome a number of WiFi networks to connect to. ESPHome will then attempt to connect to the one with the highest signal strength.
To enable this mode, remove the
password options from your wifi configuration
and move everything under the
# Example configuration entry wifi: networks: - ssid: FirstNetworkToConnectTo password: VerySafePassword - ssid: SecondNetworkToConnectTo password: VerySafePassword # Other options # ...
ssid (Optional, string): The SSID or WiFi network name.
password (Optional, string): The password to use for authentication. Leave empty for no password.
eap (Optional): See Enterprise Authentication.
channel (Optional, int): The channel of the network (1-14). If given, only connects to networks that are on this channel.
bssid (Optional, string): Optionally define a BSSID (MAC-Address) of the network to connect to. This can be used to further restrict which networks to connect to.
hidden (Optional, boolean): Whether this network is hidden. Defaults to false. If you add this option you also have to specify ssid.
priority (Optional, float): The priority of this network. After each time, the network with the highest priority is chosen. If the connection fails, the priority is decreased by one. Defaults to
WPA2_EAP Enterprise Authentication is supported on ESP32s. In order to configure this feature you must use the Connecting to Multiple Networks style configuration. The ESP32 is known to work with PEAP, EAP-TTLS, and the certificate based EAP-TLS. These are advanced settings and you will usually need to consult your enterprise network administrator.
# Example EAP configuration wifi: networks: - ssid: EAP-TTLS_EnterpriseNetwork eap: username: bob password: VerySafePassword - ssid: EAP-TLS_EnterpriseNetwork eap: identity: bob certificate_authority: ca_cert.pem certificate: cert.pem key: key.pem
identity (Optional, string): The outer identity to pass to the EAP authentication server. This is required for EAP-TLS.
username (Optional, string): The username to present to the authenticating server.
password (Optional, string): The password to present to the authentication server. For EAP-TLS this password may be set to decrypt to private key instead.
certificate_authority (Optional, string): Path to a PEM encoded certificate to use when validating the authentication server.
certificate (Optional, string): Path to a PEM encoded certificate to use for EAP-TLS authentication.
key (Optional, string): Path to a PEM encoded private key matching
certificatefor EAP-TLS authentication. Optionally encrypted with
This Condition checks if the WiFi client is currently connected to a station.
on_...: if: condition: wifi.connected: then: - logger.log: WiFi is connected!