Ble connection distance adjustment

[siltvm]

Hi,

Currently, I am developing a project using the nRF52810 as my controller. I am using an emulated project of ble_app_uart with the SoftDevice S112. I have integrated the timer peripheral into the project to perform LED indications based on some Bluetooth commands received from the APK. I am using the Nordic UART service to send responses back to the APK. However, I observed that after a successful Bluetooth connection, when the distance between the controller and the APK increases beyond a few meters, it disconnects. I have a question: Is there any way to increase the Bluetooth connection distance between the controller and the APK?

IDE: SEGGER Embedded Studio version 5.42a
SDK: nRF5 SDK 17.0.2

[siltvm]

hi Sigurd , modified the code according to your suggestion. adjusted the power of BLE_GAP_TX_POWER_ROLE_ADV before starting advertising and BLE_GAP_TX_POWER_ROLE_CONN after establishing the Bluetooth connection. observed a slight variation in advertising and connection distance over a few meters (3 to 4).  tested this behavior on a development board. Are there any other options for improving the connection range? What is the maximum BLE connection and advertising range for the nRF52810?

[Sigurd]

siltvm said:

What is the maximum BLE connection and advertising range for the nRF52810?

It depends on the PCB/board, and the RF environment the device is in.

siltvm said:

Are there any other options for improving the connection range?

Again, it's important to tune the matching network/antenna and have a good PCB layout to get good range. This is maybe the most important thing.

siltvm said:

observed a slight variation in advertising and connection distance over a few meters (3 to 4).

For connections, if only 1 side of the link have increased TX-power, then it might not make that much difference in range, if the device that increased the TX-power is also the device with the poorest RX sensitivity.

If you want, you can create a new private case, ask for a PCB layout review of your board. We can also help with the tuning.

 General PCB design guidelines for nRF52 series