ESP32 – 32 GPIO development board with WiFi and Bluetooth

It supports data rates up to 150 Mbps, delivers 20.5 dBm of output power at the antenna for maximum range and draws only 5 µA in sleep mode.

It also provides interfaces for temperature sensors, touch sensors, SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, a micro USB connector, a Boot button 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 plugs, home automation, mesh networks, industrial wireless control, wearable electronics and so on. Dimensions (mm): 55x28x14.

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

• 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 interface (32 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:
  – Supports the standard IEEE 802.11 security features, including WFA, WPA / WPA2 and WAPI
  – Secure boot
  – Flash encryption
  – 1024-bit OTP, up to 768 bit for customers
• Programming:
  – Hold the “boot” button down while programming.

To install the ESP32 HR0204 board in your Arduino IDE, follow these instructions:

• In the Arduino IDE go to File > Preferences
• Enter the following in the “Additional Board Manager URLs” field: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

• Open the Boards Manager: Tools > Board > Boards Manager…

• Search for ESP32 and press the install button for “ESP32 by Espressif Systems “

• Select the DOIT ESP32 DEVKIT V1 board from the Tools > Board > ESP32 menu

• Select the COM port that has been installed (the board must be connected to the USB port)
• You are now ready to start programming

• ESP32 Details
• ESP32 Forum
• ESP32 Datasheet