Wi-Fi and reaching the station
Use this page when the station does not join your Wi-Fi, or when you cannot open its web page.
Things to know first
- The station uses 2.4 GHz Wi-Fi only. WPA3-only networks are not supported.
- When it has no working Wi-Fi it opens its own setup network,
OpenTag-Setup-XXXX. It has no password. - The setup network appears when no Wi-Fi is set up, and again after three failed connection attempts in a row. It closes about 30 seconds after the station has connected.
- The tag reader starts only once the station is on your Wi-Fi and the setup network has closed.
Without Wi-Fi it does not read tags; the NFC READER setup step shows "NFC reader starting...",
and Manage tag shows
PLACE A TAGeven with a tag on the reader.
Where to look
| What you need | Where it is |
|---|---|
| Is the station connected, and its IP address | Touchscreen Settings: "Connected - " and the address, or "Wi-Fi not connected" |
| Setup network name | Touchscreen Settings: "Setup Wi-Fi … (no password)" |
| More detail (network name, signal, gateway) | Touchscreen Settings → About / Advanced |
| The reason the last attempt failed | Touchscreen Settings → Wi-Fi & services (the WI-FI step), or the setup page |
The station does not join your Wi-Fi
| What you see | What it means | What to do |
|---|---|---|
| "Wi-Fi password was rejected. Check the password (it is case-sensitive)." | Wrong password. | Enter it again. |
| "Wi-Fi password or security mismatch. Check the password; WPA3-only networks are not supported." | Wrong password, or the network only allows WPA3. | Check the password. Set the router to WPA2 or WPA2/WPA3 mixed mode, or use another network. |
| "Wi-Fi network not found. Use a 2.4 GHz network and check the name." | The station cannot see a network with that name. | Check the spelling. Make sure the router offers this network on 2.4 GHz. |
| "Wi-Fi signal too weak or unstable. Move the station closer to the router." | The signal is poor at the station. | Move the station or the router. |
| "The router refused the connection. Check for MAC filtering, WPA3-only or client limits on this network." | The router does not let the station in. | Allow the station in the router's settings. |
| "Wi-Fi connection timed out" | No answer in time. | Try again; if it repeats, treat it like a weak signal. |
To enter the Wi-Fi details again:
- Touchscreen: Settings → Wi-Fi & services, then Scan, choose the network, type the password, Save.
- Phone or computer: join the setup network and open
http://192.168.4.1/, then Scan for networks and Save and connect.
Both are described step by step in First boot and Wi-Fi.
You cannot open the station's web page
| What you see | What it means | What to do |
|---|---|---|
http://opentag-station.local/ does not open |
Your device cannot look up the name, or you chose another hostname. | Use the IP address from the touchscreen Settings page, for example http://192.168.1.50/. |
| The IP address does not open either | Your device is on another network, or the address changed. | Connect the device to the same network as the station and read the address from the touchscreen again. |
| The touchscreen shows "Wi-Fi not connected" | The station is offline. | See the table above. After three failed attempts the setup network starts. |
http://192.168.4.1/ does not open |
Your device is not on the setup network, or the setup network has closed. | Join OpenTag-Setup-XXXX first. If it is not in the list, the station is connected to your Wi-Fi: use its normal address. |
Your device cannot join OpenTag-Setup-XXXX |
It remembered a password from an older firmware, or it leaves networks without internet. | Forget the network on your device and join it again; it has no password. If your device offers to stay connected without internet, accept. |
| The page opens but changes ask for a token | An access token is set. | Enter it. If you forgot it, see Access token and network safety. |
Open the setup network on purpose
If the station is connected but you want the setup network anyway — for example to move it to another Wi-Fi from your phone:
- Browser: Settings → Advanced → Device controls → Start setup access point.
- Confirm "Open the temporary setup network? It has no password and closes by itself after 10 minutes. Normal Wi-Fi stays connected."
- Read its name from the touchscreen Settings page and join it; it has no password. The line reads "Setup Wi-Fi … (no password) - closes in N min".
A setup network you started yourself closes by itself after 10 minutes. While it is open the browser shows "Setup network open for N more min." and a Stop setup network button that closes it straight away.
You cannot stop the setup network while the station has no working Wi-Fi (no Wi-Fi saved, or three failed connection attempts in a row). In that case the setup network is the only way to reach the station, so it stays on until the station connects to your Wi-Fi.
Tags are ignored after Wi-Fi trouble
The tag reader does not start until the station has joined your Wi-Fi once since it was switched on. If the NFC READER setup step keeps showing "NFC reader starting...", fix the Wi-Fi first, then wait about half a minute. See also Tag is not detected.
For a closer look
Connected to a computer over USB, the station prints one line for every failed attempt on its
serial port (115200 baud), starting with sta_failure. It says whether the network was seen in
the scan and how strong the signal was.