RedBear Duo IOT Board (Wi-Fi & BLE)

Compact IoT development board with Wi-Fi and BLE, 18 GPIO pins, RGB LED, and support for Arduino, JavaScript, and Python.

Logical pinout · physical placement not verified

VIN
Type · Power
3V3
Type · Power
GND
Type · Ground
D0RX
Type · GPIO, UART
D1TX
Type · GPIO, UART
D2
Type · GPIO
D3
Type · GPIO
D4
Type · GPIO
D5
Type · GPIO
D6
Type · GPIO
D7
Type · GPIO
A0
Type · Analog
A1
Type · Analog
A2
Type · Analog
A3
Type · Analog
SDA
Type · I2C
SCL
Type · I2C
MOSI
Type · SPI
MISO
Type · SPI
SCK
Type · SPI
RST
Type · Control

Pin	Type
VIN	Power
3V3	Power
GND	Ground
D0RX	GPIO, UART
D1TX	GPIO, UART
D2	GPIO
D3	GPIO
D4	GPIO
D5	GPIO
D6	GPIO
D7	GPIO
A0	Analog
A1	Analog
A2	Analog
A3	Analog
SDA	I2C
SCL	I2C
MOSI	SPI
MISO	SPI
SCK	SPI
RST	Control

Logical pinout · physical placement not verified

Pin details

21 connections

VIN
Power
3V3
Power
GND
Ground
D0RX
GPIO, UART
D1TX
GPIO, UART
D2
GPIO
D3
GPIO
D4
GPIO
D5
GPIO
D6
GPIO
D7
GPIO
A0
Analog
A1
Analog
A2
Analog
A3
Analog
SDA
I2C
SCL
I2C
MOSI
SPI
MISO
SPI
SCK
SPI
RST
Control

Start wiring

UART · SPI · 3.3 V · 5 V · Breakout

Seeed describes MDBT50Q-1M and MDBT50Q-P1M as Bluetooth 5.0 / BLE modules based on Nordic nRF52840, with GPIO, SPI, UART, I2C, I2S, PWM, …

Module pins: VIN, 3V3, GND, D0/RX, D1/TX, D2, D3, D4. Schematik maps them to your board in the app.

Bluetooth

70 other options

BLE 5-era modules (nRF52840, MDBT50Q), XIAO MG24 boards with Matter-over-Thread, Bluefruit UART/SPI bridges, HM-11 serial modules, and BLE sniffers cover different jobs and different hosts.

View all 70

Related groups

4 groups

Cellular

Adafruit FONA GSM breakouts, the Gravity Air780EU 4G Cat 1 module, Dragino NB-IoT Shield-B8, Pycom FiPy, Quectel and SIMCom M.2 5G modems, and the RockBLOCK 9603 Iridium modem each target a different network tier.

Wireless & comms · Cellular · 58 parts

GNSS & GPS

Adafruit Ultimate GPS (PA1616S/PA1616D), NEO-6M and NEO-M9N u-blox breakouts, Gravity GNSS BeiDou boards with I2C/UART, and 4G or LoRa RTK kits — accuracy and constellation requirements split them.

Wireless & comms · GNSS & GPS · 68 parts

LoRa & RF

RFM95W and SX1262 LoRa transceivers, Wio-E5 LoRaWAN modules, SX1302 gateways, Digi XBee mesh radios, 433 MHz ASK serial links, Dragino IoT sensor nodes, and the SDRplay RSP2 wideband SDR receiver.

Wireless & comms · LoRa & RF modules · 94 parts

Networking

ESP8285, ATWINC1500, and EMW3060 Wi-Fi modules; the WIZ5500 Ethernet co-processor; the DP83848 RMII PHY board; 802.11n USB adapters for the Pi; and an XBee USB configuration adapter.

Wireless & comms · Wi-Fi & networking · 26 parts

Pinout