Review on πΆ KeeYees 2 Pack ESP32 Mini WiFi + Bluetooth Development Module Expansion Board Chip ESP-WROOM-32 for NodeMCU and Arduino - Upgraded for Internet Connectivity by Eric Rios
Voltage regulator is not enough to operate radios
Voltage regulator from 5V to 3.3V is only rated for 150mA. This means if you try to use the radio the supply voltage will drop and the device will reset the voltage. In other words, don't plan to use Wi-Fi or Bluetooth with this module if you are powering it from the USB port or the 5V pin on the connector.
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