ESP32

The Esp32 DevKit v1 is one of the development board created to evaluate the ESP-WROOM-32 module. It is based on the ESP32 microcontroller that boasts Wifi, Bluetooth, Ethernet and Low Power support all in a single chip.

ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The entire solution takes up the least amount of printed circuit board area. This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology.

Flash Layout

The internal flash of the ESP32 module is organized in a single flash area with pages of 4096 bytes each. The flash starts at address 0x00000, but many areas are reserved for Esp32 IDF SDK. There exist two different layouts based on the presence of BLE support.

Power

Power to the Esp32 DevKit v1 is supplied via the on-board USB Micro B connector or directly via the “VIN” pin. The power source is selected automatically.

The device can operate on an external supply of 6 to 20 volts. If using more than 12V, the voltage regulator may overheat and damage the device. The recommended range is 7 to 12 volts.

Connect, Register, Virtualize and Program

The Esp32 DevKit v1 comes with a serial-to-usb chip on board that allows programming and opening the UART of the ESP32 module.

Specifications:

• Microcontroller: Tensilica 32-bit Single-/Dual-core CPU Xtensa LX6
• Operating Voltage: 3.3V
• Input Voltage: 7-12V
• Digital I/O Pins (DIO): 25
• Analog Input Pins (ADC): 6
• Analog Outputs Pins (DAC): 2
• UARTs: 3
• SPIs: 2
• I2Cs: 3
• Flash Memory: 4 MB
• SRAM: 520 KB
• Clock Speed: 240 Mhz
• Wi-Fi: IEEE 802.11 b/g/n/e/i
• Integrated TR switch, balun, LNA, power amplifier, and matching network
• WEP or WPA/WPA2 authentication, or open networks