ESP32 C3 keeps displaying pop-up messages (onboard antenna)

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. For maximum power, add the following source code below `BLEDevice:init("Airpords69)"`: `
esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_AD V, ESP_PWR_LVL_P21);
esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_SC AN, ESP_PWR_LVL_P21);
esp_ble_tx_power_set(ESP_BLE_PWR_TYPE_DEF AULT, ESP_PWR_LVL_P21);
` Effective distance ≥ 3m.
Materials:
1) Thickness, width, and length 70, 20, 25mm; Battery - 300mA (antenna version is 150mA);
2) Copper pillars M2*8 (4 pieces), M2 screws (8 pieces).
3) 3M double-sided tape for fixing the battery
 
                                                                                                                                    
V1.0 (October 18, 2023):
1) Simplified the size of the ESP32 development board, and added a battery management module later for easy portability without external power supply;
V1.1 (October 23, 2023) :
1) Changed ESP32 S3 to ESP C3 to reduce cost;
2) Added a power switch (forgot to mention, oops!);
V1.2 (October 24, 2023): 1
) Circuit fine-tuning;
V1.3 (November 4, 2023):
1) Added a step-down voltage regulator chip to solve the problem of program download failure without battery installation (useless); 2
) Added battery pads;
3) Circuit adjustments;
 
                                                                                                                                    
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