Wifi connection - OpenEVSE

Tags: #<Tag:0x00007fdb5928dc78>

Hi guys,

We connected the OpenEVSE on our Wireless Network. After that, We lost the HTTP access. We are able to ping the new OpenEVSE IP, but we can’t access it via browser. Do you know how to fix it?


Do you mean it was first connected via a wired connection and it worked? If so the WiFi connection will be a different IP address.

We connected by wifi to ip,
we create a local wifi network and provide a new ip address changing the to the new one. After that we lost the to openevse.

I’m not exactly sure what you mean here unfortunately. @TrystanLea @glyn.hudson can you help?

Hi @Geinian, nice work connecting the OpenEVSE WiFi to your network. I’m assuming the web interface worked fine in AP mode when connecting to It’s very strange you no longer have access to the web interface when browsing to the IP address on your local network.

If you power cycle the OpenEVSE does you local IP address appear on the LCD?

To reset the WiFi module to disconnect it from you local network and put it into AP mode again hold down boot / GPIO0 button on the ESP8266 module for about 5s will force WiFi access point mode.

Do you have a different WiFi network you can test to connect to?

If you’re still having issues then it sounds like you have a faulty WiFi module. We could try and send out a replacement Wifi module for you to test with.

After upgrading the wifi module (Adafruit HUZZAH ESP8266 breakout) firmware from 2.7.8 to 2.8.1 I am not able to access it anymore, it’s bricked. No SSID is being broadcasted and it’s not connected to my network. Upgrade went successful as per the message on the display.
We’ve bought a programmer USB to UART and followed some guides to write a new firmware to the flash but it’s not working. We’ve hold down the GPIO0 button, clicked the reset button then released the GPIO0 to enter bootload mode but not sure whether it worked.
Tried transferring the file using on Linux and esptool GUI on Windows. We are getting connection failure messages on both cases. The module’s blue LED blinks during the connection phase.
That’s how we have connected things:
TX and RX pins going to the programmer and GROUND and V+ to the Arduino.

This might help:
Connect the +5V and GND from your USB->TTL programmer to the ESP8266 module - disconnect it from the EVSE supply first. The Rx and Tx as you have connected it - RX(Programmer) to TX(ESP) and TX(Programmer) to RX(ESP). Not connecting ground can be the reason it will not flash as you are powering the ESP from a power supply that does not share the same ground plane as the USB port of the PC.

@Steven_Bense is correct. You will need at least GND from the programmer. I would recommend connecting both VCC and GND from your programmer with the module disconnected from the OpenEVSE

When I set the IP adress to an internal network IP, I lose access in OpenEvse.
The default IP is and I changed to an internal network IP the was reserved to this equipment.
Every time we connect to a different IP in OpenEvse we have to reset the module because it is inaccessible to the network, how to solve this problem?

To ensure the OpenEVSE uses the same IP address each time you will need to reserve it’s IP address via your router. Alternatively you could access via the hostname which should work irrespective of IP address http://openevse or http://openevse.local. Local IP address lookup does not work on all networks.

What WiFi router are you using?

There is a reserved ip, I just can’t access the openEvse interface through this ip.
the device generates the new ip but does not access the graphical interface
every time I turn on the device it generates the same ip
which is from the internal network.

You need to go into your router and expire the lease on that IP Address and then reserve a different IP against the MAC address of the OpenEVSE.

This is an issue with your WiFi / DHCP server not the OpenEVSE. The OpenEVSE just takes the IP Address the Router/DHCP server gives it.

1 Like