ESP32 – Mini WiFi + Bluetooth Development Board ESP-WROOM-32

Same specification as the YB555 board but in a more compact format, only 32x39x4.70mm. This board offers data rates up to 150 Mbps, an antenna output power of 20.5 dBm to guarantee maximum range and a sleep-mode consumption of just 5 µA.

The board also provides interfaces for temperature sensors, touch sensor, SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, a micro USB connector and a reset button.

It can be used in a wide range of applications such as wearable devices, low-power sensor networks, audio headsets, smart sockets, home automation, mesh networks, industrial wireless control, wearable electronics and so on.

The pin layout gives compatibility with modules developed for the D1 Mini ESP8266, while at the same time offering fast WLAN connectivity, improved GPIO and Bluetooth features. All I/O pins have interrupt, PWM, I2C and one-wire capability, except the DO pin (Digital Output).

Programmable with the Arduino IDE, it includes interpreters for command processing in languages such as LUA and Micropython.

• 100% compatible with the Arduino IDE, Lua and Micropython
• Low-power technology
• Full range of performance and features of the ESP32 chip
• Fast WLAN connection
• Improved GPIO and Bluetooth features
• All I/O pins have interrupt, PWM, I2C and one-wire capability, except the DO pin
• Pin layout similar to the conventional D1 Mini ESP8266-12F
• The pack includes 4 x 10-way female headers and 2 x 8-way female headers for connecting the pins.

• CPU and memory
  – Xtensa® single-/dual-core 32-bit LX6 microprocessor(s), up to 600 DMIPS
  – 448 kB ROM
  – 520 kB SRAM
  – 16 kB SRAM in RTC
  – 4 MB Flash memory
• Wi-Fi
  – 802.11 b/g/n HT40 Wi-Fi transceiver, baseband, stack and LwIP
  – Sniffer / Station / SoftAP modes and Wi-Fi direct mode
  – Maximum data rate 150 Mbps@11n HT40, 72 Mbps@11n HT20, 54 Mbps@11g and 11 Mbps@11b
  – Maximum transmit power 19.5 dBm@11b, 16.5 dBm@11g, 15.5 dBm@11n
  – Minimum receiver sensitivity -97 dBm
• Bluetooth
  – Compliant with the Bluetooth v4.2 BR/EDR and BLE specifications
  – NZIF receiver with -97dBm sensitivity
  – Class 1, class 2 and class 3 transmitter
  – Transmit power +12dBm
  – NZIF receiver with -97dBm sensitivity
  – Bluetooth and BLE multi-connections
• Clocks and Timers:
  – Internal 8 MHz oscillator with calibration
  – Internal RC oscillator with calibration
  – External oscillator from 2 MHz to 40 MHz
  – External 32 kHz oscillator for the RTC with calibration
  – Two timer groups, each including 2 x 64-bit timers and 1 x main watchdog
  – RTC watchdog
• Peripheral interfaces (25 GPIO):
  – 12-bit SAR ADC with up to 18 channels
  – 2 x 8-bit A/D converters
  – 10 touch sensors
  – Temperature sensor
  – 3 for SPI, 2 for I2S, 2 for I2C, 2 for DAC, 3 for UART
  – 1 host (SD / eMMC / SDIO), 1 slave (SDIO / SPI)
  – Ethernet MAC interface with dedicated DMA and IEEE 1588 support
  – CAN 2.0
  – IR (TX / RX)
  – Motor PWM, LED PWM with up to 16 channels
  – Hall sensor
  – Ultra-low-power analogue pre-amplifier
• Security:
  – Standard IEEE 802.11 security features supported, including WFA, WPA / WPA2 and WAPI
  – Secure boot
  – Flash encryption
  – 1024-bit OTP, up to 768 bits available to customers

• ESP32 Details
• ESP32 Forum
• ESP32 Datasheet
• Installation procedure in the Arduino IDE