I have a PCB disassembled from a RGB bulb with an BK7231T chip on it.
I successfully flashed OpenBeken to it, connected to the devices Access Point, were able to configure details and so on.
Unfortunately the device does not create this internal access point anymore. Usually you can request it do start this access point by poweing it down and up 5-6 times. But is does not work anymore.
Do you have any idea what happened and how I can solve it?
I already flashed the device again with OpenBeken and were able to create a backup. So the communication with the BK7231T chip is still working fine.
(...) do start this access point by poweing it down and up 5-6 times. But is does not work anymore.
Do you have any idea what happened and how I can solve it?
I already flashed the device again with OpenBeken and were able to create a backup. So the communication with the BK7231T chip is still working fine.
It sounds like you have done a great job so far in flashing the OpenBeken firmware to your BK7231T chip and initially getting it to work. However, the issue with the device not creating its internal access point (AP) and not responding to the power cycle method suggests there might be a configuration or firmware-related issue. Let's troubleshoot the issue step-by-step and explore potential solutions.
Step-by-Step Troubleshooting
1. Verify Power Cycling Method: - Ensure you are following the correct power cycling procedure. Typically, the device needs to be powered on and off in quick succession (5-6 times) within a specific time frame to trigger AP mode. - Confirm that the timing of the power cycles is consistent with the instructions provided by OpenBeken.
2. Check for Configuration Issues: - Since you can still communicate with the BK7231T chip, check the current configuration settings. There might be settings preventing the device from starting the AP. - Look for any settings related to Wi-Fi modes, AP behavior, or network configurations that might need adjustment.
3. Factory Reset: - If possible, perform a factory reset of the OpenBeken firmware. This should revert the device to its default settings, including enabling the AP mode. Check the OpenBeken documentation for the factory reset procedure.
4. Check Logs and Diagnostics: - If OpenBeken provides access to logs or a diagnostics interface, review the logs for any errors or warnings related to Wi-Fi or AP mode. - Look for any specific error messages that might indicate what is preventing the AP from starting.
5. Re-flash the Firmware: - Although you have already re-flashed the firmware, it's worth trying again to ensure no issues occurred during the process. Use the latest stable version of OpenBeken, and verify the integrity of the firmware file before flashing. - After re-flashing, perform a factory reset to ensure the device starts with default settings.
6. Check for Hardware Issues: - While less likely, it's possible there could be a hardware issue affecting the Wi-Fi module. Inspect the PCB and components for any visible damage or loose connections. - Ensure the power supply is stable and providing sufficient power to the device.
Potential Solutions
1. Reconfigure via Serial Connection: - If the device has a serial interface, you might be able to connect via a serial terminal and reconfigure the Wi-Fi settings directly. - Use a serial-to-USB adapter and connect to the BK7231T chip's serial interface. Access the console and check or modify the Wi-Fi settings to re-enable the AP mode.
2. Manual Configuration File Edit: - If OpenBeken allows for manual editing of the configuration file, you might be able to modify the settings directly. This could involve downloading the configuration file, editing it to re-enable AP mode, and then re-uploading it to the device.
3. Consult OpenBeken Documentation and Community: - Review the OpenBeken documentation and any available troubleshooting guides. There might be specific instructions for resolving AP mode issues. - Engage with the OpenBeken community or support channels. Other users might have encountered similar issues and could offer insights or solutions.
Example Commands for Serial Configuration (Hypothetical)
Code: Text
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Final Thoughts
By following these steps and exploring the potential solutions, you should be able to diagnose and hopefully resolve the issue with your BK7231T chip not creating the internal access point.
If you encounter specific errors or need further assistance, please share more details about the configuration settings, logs, or any error messages you observe, and I'll be happy to help you troubleshoot further.
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While power is lost and comes on again, OpenBeken devices boot up first and router giving DHCP after that.
Then OpenBeken devices get IP address, but router seems to be missing OpenBeken device names.
How can I fix this?
The issue you're experiencing with OpenBeken devices not retaining their names in the router's DHCP client list after a power interruption is a common problem in scenarios where devices boot up before the router can fully provide network services. Here’s a detailed approach to help fix this issue:
Understanding the Problem When power is restored, OpenBeken devices boot up faster than the router. Because the router takes additional time to fully initialize and provide DHCP services, the OpenBeken devices might not properly register their hostname with the DHCP server or might get an IP address before the router can assign a name.
Solutions to Retain Device Names
1. Enable Static IP Assignment: Static IP addresses can prevent the issues caused by DHCP delays. Assign a fixed IP address to each OpenBeken device either through the OpenBeken configuration or directly in the router's settings.
Router Configuration: - Access your router's administration interface (usually accessible through a web browser). - Locate the DHCP settings or the section where you can manage DHCP reservations. - Add a reservation for each OpenBeken device using its MAC address, assigning a specific IP address and hostname.
2. Increase Device Boot Time Delay: Introducing a boot delay in the OpenBeken firmware might allow the router more time to initialize before the devices request IPs.
OpenBeken Configuration: - Modify the OpenBeken settings to implement a delay before attempting to connect to the network. - You might need to explore the firmware documentation or source to add a delay (often configurable in seconds) to the device’s initial startup script.
3. Use mDNS/Bonjour for Device Discovery: Implementing mDNS (Multicast DNS) allows devices to discover each other on the local network without relying on traditional DNS services.
OpenBeken Configuration: - Check if OpenBeken supports mDNS (also known as Bonjour in Apple devices). This service broadcasts device names and services locally. - Enable mDNS in the OpenBeken settings, if available. This will help your devices announce their presence and names independently of the router's DHCP.
Detailed Instructions
Static IP Assignment
1. On the Router: - Log into your router (usually at `http://192.168.1.1` or similar). - Navigate to the DHCP section. It might be under Network Settings, LAN, or Advanced Settings. - Find the section for DHCP reservations. - Add a new reservation: Input the MAC address of your OpenBeken device, the desired static IP address, and the hostname. - Save the changes and reboot the router if necessary.
2. On OpenBeken Device: - Connect to the OpenBeken device’s web interface. - Go to Network Settings. - Select "Static IP" and input the IP address, subnet mask, gateway, and DNS server. - Save and reboot the device.
mDNS Configuration
1. Check OpenBeken Support: - Ensure the OpenBeken firmware version you are using supports mDNS. Check the documentation or firmware repository for this feature.
2. Enable mDNS: - Access the OpenBeken device’s web interface. - Navigate to the Network or Advanced Settings section. - Find and enable the mDNS setting. - Save and reboot the device.
3. Verify mDNS Operation: - Use a network scanner app on your smartphone or a tool like `avahi-browse` on Linux to verify that the device broadcasts its name on the network.
Additional Considerations
- Firmware Updates: Ensure both the OpenBeken firmware and the router firmware are up-to-date. Updates might include improvements and bug fixes related to DHCP and network handling. - Network Configuration: Review your network setup. Ensure there are no conflicts or misconfigurations that could be causing the issue. This includes checking the DHCP lease time and ensuring no network segments or IP ranges are overlapping. - Device Reinitialization: After making changes, perform a controlled power cycle: power off the devices, then the router. Power on the router first, wait for it to fully initialize, then power on the OpenBeken devices.
Example Configuration File Edits (Hypothetical)
If manual configuration on the OpenBeken firmware is needed, you might edit a configuration file (if firmware supports this method):
Code: text
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By setting static IPs and possibly enabling mDNS along with a boot delay, your devices should be able to retain their names and function correctly even after power interruptions. If you need further assistance, feel free to provide more details about your setup, and we can delve deeper into the problem.
You can call me in any topic by writing @ElektrodaBot. Disclaimer: Some answers provided by the ElektrodaBot may be inaccurate. Elektroda not responsible for accuracy, reliability or completeness of the information presented. All ElektrodaBot responses should be verified by the user. OpenAI can monitor and save information entered after calling ElektrodaBot.
It sounds like you're experiencing a common issue where your OpenBeken devices boot up and request IP addresses from the router before the router's DHCP server is fully operational. This can lead to the devices receiving IP addresses but not being properly registered with their names in the router's DHCP table. Here’s a detailed breakdown of the problem and potential solutions:
Problem Analysis
1. Power Loss & Startup Sequence: When power is lost and then restored, both your router and OpenBeken devices reboot. However, the OpenBeken devices boot up faster than the router.
2. DHCP Request Timing: The OpenBeken devices send DHCP requests for IP addresses before the router's DHCP server is fully ready.
3. Incomplete Registration: The router assigns IP addresses to the OpenBeken devices, but it doesn't register their names because its device name resolution or network scanning functionalities are not yet fully operational.
Potential Solutions
1. Delay OpenBeken Boot-up
One way to address this issue is to delay the boot-up of your OpenBeken devices, allowing the router to be fully operational before the devices request IP addresses.
- Check for Delay Settings: Look into the settings of your OpenBeken devices to see if there is an option to delay their network connection on startup. This delay can give your router enough time to be ready.
- Use Smart Plugs: If the devices do not have a built-in delay setting, consider using smart plugs with staggered power-on schedules. Set the OpenBeken devices to power on a few minutes after the router.
2. Configure Router Settings
Adjusting settings on your router can also help ensure that the OpenBeken devices are properly registered.
- Increase DHCP Lease Time: Log into your router’s configuration page and navigate to the DHCP settings. Increasing the DHCP lease time ensures that devices retain their assigned IPs for a longer period, reducing the frequency of DHCP requests during startup.
- Assign Static IP Addresses: Assign static IP addresses to your OpenBeken devices within the router’s DHCP reservation table. This bypasses the dynamic assignment process and ensures consistent recognition.
3. Update Firmware
Ensure that both your router and OpenBeken devices are running the latest firmware versions. Firmware updates often contain bug fixes and optimizations that could address this issue.
- Router Firmware: Check the manufacturer’s website for the latest firmware version for your router and follow the instructions to update it.
- OpenBeken Firmware: Similarly, check for firmware updates for your OpenBeken devices and update them accordingly.
4. Modify OpenBeken Configuration
You can configure your OpenBeken devices to broadcast their names to the network before they receive an IP address.
- Access Configuration File: The configuration file for OpenBeken devices is typically stored in the device’s LittleFS file system. You can access this file through the OpenBeken web interface or by using a tool like the OpenBK7231T flash tool.
- Set DHCPName and DHCPWait Options: Modify the configuration file to include the `DHCPName` and `DHCPWait` options. This ensures that the device broadcasts its name to the network and waits for the router to be ready.
Example configuration:
Code: Text Expand Select all Copy to clipboard
[DHCP]
DHCPName = true
DHCPWait = 10
- Restart the Device: After making these changes, restart the OpenBeken device to apply the new configuration.
Troubleshooting Tips
- Power Cycle: Perform a full power cycle by turning off both the router and OpenBeken devices, waiting a few minutes, and then powering on the router first, followed by the OpenBeken devices.
- Monitor Device List: After the network stabilizes, check your router’s device list or connected devices page to see if the OpenBeken devices are now being recognized with their names.
Conclusion
By following these steps, you should be able to ensure that your OpenBeken devices consistently register their hostnames with the router after a power cycle. If the issue persists, providing more details about your router model and OpenBeken device specifics would help in suggesting more targeted solutions.
(...) following these steps, you should be able to ensure that your OpenBeken devices consistently register their hostnames with the router after a power cycle. If the issue persists, providing more details about your router model and OpenBeken device specifics would help in suggesting more targeted solutions.
It sounds like you're experiencing a common issue where your OpenBeken devices boot up and request IP addresses from the router before the router's DHCP server is fully operational. This can lead to the devices receiving IP addresses but not being properly registered with their names in the router's DHCP table. Here’s a detailed breakdown of the problem and potential solutions:
Problem Analysis
1. Power Loss & Startup Sequence: When power is lost and then restored, both your router and OpenBeken devices reboot. However, the OpenBeken devices boot up faster than the router. 2. DHCP Request Timing: The OpenBeken devices send DHCP requests for IP addresses before the router's DHCP server is fully ready. 3. Incomplete Registration: The router assigns IP addresses to the OpenBeken devices, but it doesn’t register their names because its device name resolution or network scanning functionalities are not yet fully operational.
Potential Solutions
1. Delay OpenBeken Boot-up
One way to address this issue is to delay the boot-up of your OpenBeken devices, allowing the router to be fully operational before the devices request IP addresses.
- Check for Delay Settings: Look into the settings of your OpenBeken devices to see if there is an option to delay their network connection on startup. This delay can give your router enough time to be ready. - Use Smart Plugs: If the devices do not have a built-in delay setting, consider using smart plugs with staggered power-on schedules. Set the OpenBeken devices to power on a few minutes after the router.
2. Configure Router Settings
Adjusting settings on your router can also help ensure that the OpenBeken devices are properly registered.
- Increase DHCP Lease Time: Log into your router’s configuration page and navigate to the DHCP settings. Increasing the DHCP lease time ensures that devices retain their assigned IPs for a longer period, reducing the frequency of DHCP requests during startup. - Assign Static IP Addresses: Assign static IP addresses to your OpenBeken devices within the router’s DHCP reservation table. This bypasses the dynamic assignment process and ensures consistent recognition.
3. Update Firmware
Ensure that both your router and OpenBeken devices are running the latest firmware versions. Firmware updates often contain bug fixes and optimizations that could address this issue.
- Router Firmware: Check the manufacturer’s website for the latest firmware version for your router and follow the instructions to update it. - OpenBeken Firmware: Similarly, check for firmware updates for your OpenBeken devices and update them accordingly.
4. Modify OpenBeken Configuration
You can configure your OpenBeken devices to broadcast their names to the network before they receive an IP address.
- Access Configuration File: The configuration file for OpenBeken devices is typically stored in the device’s LittleFS file system. You can access this file through the OpenBeken web interface or by using a tool like the OpenBK7231T flash tool. - Set DHCPName and DHCPWait Options: Modify the configuration file to include the `DHCPName` and `DHCPWait` options. This ensures that the device broadcasts its name to the network and waits for the router to be ready.
Example configuration:
Code: text
Log in, to see the code
- Restart the Device: After making these changes, restart the OpenBeken device to apply the new configuration.
Troubleshooting Tips
- Power Cycle: Perform a full power cycle by turning off both the router and OpenBeken devices, waiting a few minutes, and then powering on the router first, followed by the OpenBeken devices. - Monitor Device List: After the network stabilizes, check your router’s device list or connected devices page to see if the OpenBeken devices are now being recognized with their names.
Conclusion
By following these steps, you should be able to ensure that your OpenBeken devices consistently register their hostnames with the router after a power cycle. If the issue persists, providing more details about your router model and OpenBeken device specifics would help in suggesting more targeted solutions.
You can call me in any topic by writing @ElektrodaBot. Disclaimer: Some answers provided by the ElektrodaBot may be inaccurate. Elektroda not responsible for accuracy, reliability or completeness of the information presented. All ElektrodaBot responses should be verified by the user. OpenAI can monitor and save information entered after calling ElektrodaBot.
Give an example of how to calculate the width and height of a screen knowing its diagonal and aspect ratio.
Calculate for a diagonal of 27 inches and an aspect ratio of 16:10
Hello there! I'd be happy to help you with your query.
To calculate the width and height of a screen with a known diagonal and aspect ratio, you can use the Pythagorean theorem and the aspect ratio as a base. Here's a step-by-step process for your example:
1. We know the diagonal (D) is 27 inches and the aspect ratio is 16:10 (which can also be represented as W:H or 16x:10x, where x is a scaling factor).
2. According to the Pythagorean theorem, the relationship between the diagonal, width, and height is:
D² = W² + H²
3. From the aspect ratio, we can set up the equation:
W = 16x, H = 10x
4. Substituting these values into the Pythagorean theorem equation, we get:
D² = (16x)² + (10x)² = 256x² + 100x²
5. Now, plug in the diagonal measurement of 27 inches:
27² = 256x² + 100x²
729 = 356x²
6. Next, solve for x:
x² = 729 / 356
x² ≈ 2.0478
x ≈ √2.0478 which is approximately 1.4313
7. Finally, find the width and height by substituting x back into the aspect ratio equations:
W = 16x = 16 * 1.4313 ≈ 22.9 inches
H = 10x = 10 * 1.4313 ≈ 14.3 inches
So, for a 27-inch diagonal screen with a 16:10 aspect ratio, the width is approximately 22.9 inches, and the height is approximately 14.3 inches.
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