Arduino Board ESP32 Wifi + Bluetooth is another popular board that can be used with Arduino IDE to write programs similar to Arduino and has the ability to connect to the Internet via Wifi and communication. Wireless Low Energy Bluetooth 4.0 BLE
This board integrates the ESP32 with a 128x64 OLED display, making it easier to display on a single board. It has a USB TTL chip, CP2102 can communicate/upload program code via PC via port. Convenient USB. It can receive power from the VIN pin or power from the Micro USB 5V port. There are 3.3V and 5V outputs with a maximum current of 1A, so it's convenient to supply power to connected sensor devices.
ESP32 has integrated antenna and RF balun, power amplifier, low noise amplifier, filter and power management module. The entire solution is the PCB area of least. This board is a 2.4 GHz dual-mode Wi-Fi and Bluetooth low energy technology, powered by TSMC's 40nm chip, power and best RF characteristics, with a wide range of applications that are secure, reliable and scalable.
Specifications:
Chip ESP32 Wifi + bluetooth 4.0
128x64 OLED display
Circuit USB to UART chip number CP2102
The circuit enters the automatic program upload mode.
Use the AMS1117-3.3 regulator IC to receive 5V power from USB and convert it to 3.3V for supplying the ESP32 with a maximum current of 1A.
There is a boot mode switch and a reset switch.
Connect to OLED display via I2C at position 0x3C. Connect to pins GPIO5 (SDA) and GPIO4 (SCL).
Features:
High performance and low price, small size, easy to embed into other products Powerful, with LwIP protocol support, supports three modes: AP, STA and AP and STA lua program support, easy to develop