Pro ESP32 WIFI + bluetooth Board 4MB Flash Development Module Geekcreit for Arduino - products that work with official A

Features WIFIbluetooth4MB FlashLithium battery interface 500mA Max charging currentDual core Tensilica LX6 microprocessorUp to 240MHz clock frequency520kB internal SRAMIntegrated 802 11 BGN WiFi transceiverIntegrated dual mode bluetooth classic and BLE 2 2 to 3 6V operating range2 5 A deep sleep current28 GPIO10 electrode capacitive touch supportHardware accelerated encryption AES SHA2 ECC RSA 4096 Integrated LiPo BatteryChargerYou need to hold boot button then click EN will go to download mode Product test program The fourth program change the bluetooth device nameIt is necessary to point out that thesupport package ofthe development boardis not complete so far in this article at least has been achieved but did not give the interface such as bluetooth analog output function and so on So to use nolibrary function that it need to use the Native way to develop According to Espressifs official statement the library function of bluetooth is in full swing development and improvement This bluetooth program is also an example of the Espressifs official Turn on bluetooth after startup it can be found on the bluetooth interface of your mobile phone Your cell phone must support BLE to find the device because it opens with BLE bluetooth so you have to find the mobile phone support BLE equipment The classic bluetooth function there is no openinterface In addition the device name will change if the user button is pressed every time you need to us