Corne nn!v2 connection issues

Heya - I just re-flashed my nice nano v2 controllers on my corne keyboard after about 2 years of no issues, but now I'm getting a "cannot connect to device" when trying to pair to Windows 10. I did these steps: 1) cleared all the BTE profiles 2) made sure the keyboard is in BTE mode (instead of USB) 3) Reflashed the firmware 4) Checked for driver updates + rebooted the pc 5) Tried to pair to an iOS device (which worked) 6) Moved the keyboard close to the computer antenna I did have to rebuild the firmware, so it's not the exact copy that I have been using for the past couple years. However, it is the same config. What other troubleshooting should I do? Thank you!
9 Replies
TyperAI
TyperAI3mo ago
It's great that your keyboard connects to iOS, which confirms the keyboard and its firmware are functional! This points to an issue specific to your Windows 10 Bluetooth connection. Here are a few more troubleshooting steps: 1. Clear Bluetooth Device from Windows: Even after rebooting, Windows can sometimes retain corrupted pairing data. * Go to Windows Settings > Devices > Bluetooth & other devices. * Find your keyboard, click on it, and select "Remove device." * Reboot your PC, then try pairing again. 2. Modify ZMK Firmware Configuration: Since you rebuilt the firmware, try adjusting some ZMK settings that can affect connection stability. In your ZMK .conf file, add these lines, rebuild, and reflash: * Increase Transmit Power: This can improve range and connection reliability.
CONFIG_BT_CTLR_TX_PWR_PLUS_8=y

CONFIG_BT_CTLR_TX_PWR_PLUS_8=y

* Disable 2M PHY: This is a higher-speed connection that can sometimes reduce range.
CONFIG_BT_CTLR_PHY_2M=n

CONFIG_BT_CTLR_PHY_2M=n

You can find more details on these options in our documentation: Poor Range Troubleshooting. 3. Try a Different Bluetooth Adapter: If the issue persists after the above steps, your PC's built-in Bluetooth adapter or its drivers might be the culprit. A USB Bluetooth dongle can sometimes resolve these types of persistent connection problems. Let me know if these steps help! You can reply to this message or tag me if you need further assistance.
Toast
ToastOP3mo ago
I followed these steps, but still no luck. I can connect to the computer with USB.
TyperAI
TyperAI3mo ago
Since your keyboard pairs successfully with an iOS device and connects via USB to your PC, the issue is almost certainly with your Windows 10 Bluetooth stack or drivers. Here are some further steps to try: 1. Check Bluetooth Support Service: * Press Windows Key + R, type services.msc, and press Enter. * Find "Bluetooth Support Service" in the list. * Right-click it, select "Properties," and ensure "Startup type" is set to "Automatic." * If the service is not running, click "Start." Then, restart your PC. 2. Reinstall Bluetooth Drivers: * Press Windows Key + X and select "Device Manager." * Expand "Bluetooth." * Right-click your Bluetooth adapter (e.g., "Intel(R) Wireless Bluetooth(R)") and select "Uninstall device." Check the box to "Delete the driver software for this device" if available. * Restart your PC. Windows should automatically reinstall a generic driver. * For best results, visit your PC manufacturer's website (or the Bluetooth adapter manufacturer's website) to download and install the latest specific Bluetooth drivers for your model. 3. Run Windows Bluetooth Troubleshooter: * Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters. * Select "Bluetooth" and click "Run the troubleshooter." These steps focus on ensuring your Windows Bluetooth environment is healthy. Let me know if any of these help! You can reply to this message or tag me if you need further assistance.
Toast
ToastOP3mo ago
I ran these, but no luck
TyperAI
TyperAI3mo ago
Given that your keyboard works perfectly with iOS and via USB, the issue is almost certainly isolated to your Windows 10 Bluetooth environment. Since you've already tried many Windows-side fixes, let's try two more things: 1. Flash Typeractive's Pre-compiled Firmware: To rule out any subtle differences in your custom firmware build, please try flashing one of our pre-compiled firmware files. * Go to our Corne Wireless Firmware guide: https://docs.typeractive.xyz/build-guides/corne-wireless/firmware * Download the appropriate .uf2 file for your Corne (6-column or 5-column, with or without nice!view). * Follow the "Installing Firmware" steps on that page to flash it. 2. Try a Dedicated USB Bluetooth Dongle: Built-in Bluetooth adapters on PCs can sometimes have persistent issues that even driver reinstalls don't fix. A dedicated USB Bluetooth dongle often bypasses these problems entirely. This is a very common solution for tricky Windows Bluetooth connectivity. If these steps don't resolve it, it points to a very specific and deep-seated issue with your PC's Bluetooth hardware or software that might be beyond typical troubleshooting. Let me know how it goes! You can reply to this message or tag me if you need further assistance.
Toast
ToastOP3mo ago
That did not work. I can connect a different bluetooth device (Sony xm4) to the computer
TyperAI
TyperAI3mo ago
It's definitely puzzling when other Bluetooth devices connect to your PC, and your keyboard connects to other devices! This strongly suggests a very specific interaction issue between your PC's Bluetooth and the keyboard's ZMK firmware. Let's try one more thorough clearing process to ensure no lingering connections are causing a conflict: 1. Deep Clean Bluetooth Devices on Windows: * Open Device Manager (search for it in the Start Menu). * Click View > Show hidden devices. * Expand the Bluetooth section. Look for any greyed-out entries related to your keyboard. Right-click and select "Uninstall device" for each. * Also, check under Network adapters for "Bluetooth Device (Personal Area Network)" or "Bluetooth Device (RFCOMM Protocol TDI)" and uninstall them if they appear related to your keyboard's past connection. * Reboot your PC. 2. Thoroughly Clear ALL ZMK Profiles on the Keyboard: * Even if you've cleared profiles before, let's ensure all five ZMK profiles are completely reset. * On your keyboard, use your BT_SEL key (or BT_NXT/BT_PRV) to cycle through each of the five profiles (0 through 4). * For each profile, press your BT_CLR key. This ensures any hidden or corrupted bonds are removed from every slot. * Once all profiles are cleared, switch back to profile 0 (BT_SEL 0) and try pairing to your Windows PC again. If these steps still don't resolve the issue, the most reliable solution is often to use a dedicated USB Bluetooth dongle. These can sometimes bypass quirks with built-in PC Bluetooth modules that are difficult to diagnose. Let me know if this helps! You can reply to this message or tag me if you need further assistance.
Toast
ToastOP3mo ago
Clearin all the ZMK profiles worked! I seemed to have a bent pin, so I wasn't properly clearin the connection. Thank you
TyperAI
TyperAI3mo ago
That's fantastic news! I'm glad to hear that clearing all the ZMK profiles resolved the issue, and it's great that you also found the bent pin that was causing the problem. Sometimes those small hardware details can make all the difference in troubleshooting. It sounds like you're all set now! If anything else comes up, feel free to reply to this message or tag me. Happy typing!

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