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ESP32-S3-ETH-8DI-8RO-C

The Waveshare ESP32-S3-ETH-8DI-8RO and ESP32-S3-ETH-8DI-8RO-C are the main relays currently supported in Sensa Nomad. The main difference is ESP32-S3-ETH-8DI-8RO is for RS485 and ESP32-S3-ETH-8DI-8RO-C supports CAN.

If you are unsure, purchase the ESP32-S3-ETH-8DI-8RO-C model as the CAN model is useful for wired battery BMS options.

ESP32-S3-ETH-8DI-8RO-C

Install firmware on a new unit​

The ESP32-S3-ETH-8DI-8RO-C supports both ethernet and wifi. We offer a firmware for each.

You will need:

  • Your Waveshare ESP32-S3-ETH-8DI-8RO-C relay
  • A USB-C cable that supports data (not charge-only)
  • A desktop browser that supports Web Serial — Chrome or Edge on Windows, macOS, Linux, or ChromeOS. Safari and Firefox are not supported.

Steps:

  1. Plug the relay into your computer with USB-C.
  2. Click the Install Firmware button for your variant you require.

Wifi

Loading installer…

Ethernet

Loading installer…
  1. In the browser pop-up, pick the serial port for the device (usually shows up as USB JTAG/serial debug unit or USB Single Serial).
Can't see the device?

If the port picker is empty, try a different USB-C cable — many cables are charge-only and won't carry data. On Windows you may also need to hold the AtomS3's side button while plugging in to force boot mode.

  1. Choose Install when prompted, then wait — flashing takes about a minute.
  2. When it finishes, unplug and re-plug the device to boot the new firmware.

Join Wireless Network​

If you are configuring the relay for Wifi, follow these steps. This is not required if you are connecting your relay with ethernet.

Steps:

  1. On your mobile or another wireless device, a new wireless SSID should appear named sen-setup-btp. Join this network, the password is sensasetup

  2. You will then be presented with a list of all the SSIDs available, select YOUR wireless network and enter YOUR wireless password.

Bluetooth Proxy web interface
  1. Power off the device and power on. The device should then join your network.

Running Web Interface​

The device has a basic web interface which is useful to ensure the device is running and check the logs.

Steps:

  1. Identify the ip address of the device from your wireless network. You should see a device ss-bt-proxy-c124-xxxxxx, where xxxxxx is th e last 6 characters of the MAC address of the unit. That is used to make them unique incase you have multiple proxies on the network.
  2. Connect to your ip address in your browser
  3. You will be prompted for a user and password, user: admin, password: sensaweb

Bluetooth Proxy web interface

Add to Sensa Nomad​

If you are building a Bluetooth Proxy for your Sensa Nomad installation, follow these steps.

Steps:

  1. Click on Settings to show the Discovery page. Now that the Bluetooth proxy has been configured to your Wifi network, the discovery should find it. Discovery

  2. Select the device and click Add Selected Devices. Discovery

  3. The device should now show in the Added group of devices. Discovery

Add to Home Assistant (DIY)​

If you are building a Bluetooth Proxy for your own Home Assistant installation, follow these steps.

Steps:

  1. Enter the Settings > Devices & Services
  2. Home Assistant should automatically discover the device as a ESP device, named Sensa Bluetooth Proxy 0ed520
  3. Just click Add.

Bluetooth Proxy web interface

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