To connect your EZ-B V4 in client mode using the IoTiny as the server, you'll need to follow these steps to configure the network settings for both devices. Here's a step-by-step guide:

Step 1: Configure IoTiny in Access Point (AP) Mode

1. Power on the IoTiny and ensure it is in Access Point mode. This is the default mode when the device is reset.
2. Connect to the IoTiny's WiFi network using a computer or mobile device. The network name (SSID) will typically be something like EZ-B v4 1234.
3. Access the IoTiny's web server by opening a web browser and navigating to http://192.168.1.1.
4. Configure the IoTiny's settings as needed, ensuring it is set to operate in AP mode. This will allow other devices, like the EZ-B V4, to connect to it.

Step 2: Configure EZ-B V4 in Client Mode

1. Power on the EZ-B V4 and connect to its WiFi network using a computer or mobile device.
2. Access the EZ-B V4's web server by opening a web browser and navigating to http://192.168.1.1.
3. Navigate to the WiFi settings and switch the EZ-B V4 to Client mode.
4. Enter the SSID and password of the IoTiny's WiFi network. This will allow the EZ-B V4 to connect to the IoTiny as a client.
5. Save the settings and restart the EZ-B V4 to apply the changes.

Step 3: Connect Both Devices in ARC

1. Open ARC and add the EZB Connections skill to your project.
2. Connect the IoTiny by selecting its IP address or COM port in the EZB Connections skill.
3. Connect the EZ-B V4 by selecting its IP address or COM port in the EZB Connections skill. Ensure that both devices are listed and connected.

Step 4: Verify the Connection

1. Check the connection status in ARC to ensure both the IoTiny and EZ-B V4 are connected.
2. Test the communication between the two devices by sending commands or data from one to the other.

Additional Tips

• Ensure both devices are on the same network: The IoTiny and EZ-B V4 must be on the same network for them to communicate effectively.
• Check for firmware updates: Make sure both devices have the latest firmware to ensure compatibility and stability.
• Use a stable power source: Ensure both devices are powered adequately to prevent disconnections.

If you encounter any issues, feel free to ask for further assistance!

In addition to Athena’s response, this link provides step by step for different ways to do it: https://synthiam.com/Support/Tips-to-Make-a-Robot/Multiple-EZ-B-over-WiFi

This solved my problem.  Works Great ,  Thanks so Much !