RE: After scanning is turned on, the LED on the PCB board will blink

Karl Ylvisaker — Thu, 01 Jul 2021 12:48:02 GMT

Hello,

[quote user=""]When the voltage of the battery supplying the product is too low[/quote]

What do you mean when you say that the supply voltage is 'too low'?

[quote user=""]

if the scan slave is not turned on, the LED on the PCB board is normally lit,

but if the scan function is turned on, the LED will flash, as shown in the attached video.

[/quote]

Scanning requires that the radio is actively listening in RX, which has increased power consumption. Could it be that this increased power draw is limiting the current for the diode, briefly decreasing its intensity?
Keep in mind that I do not know what you mean when you said 'too low' earlier.
You can estimate the current consumption of this using the Online Power Profiler for BLE.

Best regards,
Karl