ESP32-M1 Reach Out

A compact, open, and richly-featured ESP32-M1 dev board with a Wi-Fi range of up to 1.2 km

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ESP32-M1 Reach Out is designed to help hobbyists, makers, developers, and engineers develop robust communication systems using Wi-Fi and Bluetooth protocols even at a distance. Reach Out features an ESP32 SoC with microcontroller and RF in a single package. Using the popular and well-documented ESP32 chipset makes getting going with long-range RF is as simple as can be.

The small form factor and methodical design of the ESP32-M1 features 17 GPIOS, 3 different voltage outputs, a USB bridge, digital external interfaces, external antenna connectors, and a high-power radio front-end for Wi-Fi. The board-to-board Wi-Fi line-of-sight range can be more than 1.2 km using 802.11b, while typical Wi-Fi range is closer to 200-400 m. This range is possible because of suitable parts selection, RF design optimization, tuning, and matching. The range can even be extended further if the radio behaves as a repeater.

Reach out is an excellent choice to implement remote monitoring and sensing, drone radios, long-range video streaming, security measures, mesh networking, etc.

Features & Specifications

  • MCU

    • ESP32-D0WDQ6, RF System on a Chip
    • MCU frequency of 240 MHz
    • CP2102 USB-serial bridge (USB to UART converter)
    • 32 Mbit flash
  • Radio Communication

    • Wi-Fi 802.11 b/g/n
    • Bluetooth 4.2 Classic and Bluetooth Low Energy (BLE)
    • QPF4219 PA and LNA Wi-Fi front-end from Qorvo - 33 dB PA gain and 14 dB LNA gain
    • Wi-Fi transmit output power: 27 dBm (half-watt) typical and max 30 dBm (1 watt), conducted
    • Configurable Wi-Fi transmit power
    • Wi-Fi front-end bypass mode, in which the Wi-Fi front-end is off, and only the ESP32 is used to transmit and receive - similar to Node MCU-32S.
    • Wi-Fi receiver sensitivity: -103 dBm for 802.11b, 11 Mbps, conducted
    • Separate external antenna ports for Wi-Fi and Bluetooth
  • Interface and Peripherals

    • UART, I²C, I²S, SPI
    • 12-bit ADC
    • PWM
    • 15 accessible GPIOs
    • 2 accessible input only IO
  • Input Power

    • USB +5 V, ~> 750 mA when using high power Wi-Fi front-end operation
    • USB +5 V, ~< 300 mA using normal Wi-Fi, BT, and general operation
  • Output Power

    • +3.3 V
    • +4.85 V
    • USB voltage
  • Dimensions

    • 40 mm (W) x 60 mm (L) x 1 mm (T)
    • 22 mm (W) x 22 mm (L) heat sink placement area x2

Open Source Hardware

ESP32 Reach Out is participating in the Qorvo RF Accelerator!

See Also

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