{"title":"RedBear Duo","handle":"redbear-duo","url":"/products/redbear-duo","description":"The RedBear Duo is a thumb-sized IoT development board with built-in Wi-Fi, Bluetooth 4.1 (dual mode), and Particle cloud connectivity. Everything you need to prototype connected devices is on board — just add your idea.\n\nPowered by an STM32F205 ARM Cortex-M3 at 120 MHz with Broadcom BCM43438 wireless, the Duo supports multiple development environments including Arduino IDE, Particle Web IDE, Broadcom WICED SDK, and JavaScript. With the optional RBLink expansion board, you can connect Seeed Grove modules without any soldering.\n\nKey Features\n\n\nWi-Fi + Bluetooth – BCM43438 combo chip with 802.11n (2.4 GHz) and Bluetooth 4.1 (Classic + BLE) on a shared antenna\n\nCloud Ready – Built-in Particle cloud service for remote management and OTA updates\n\nMultiple Dev Environments – Arduino IDE, Particle Web IDE, Broadcom WICED SDK, and JavaScript\n\n18 I/O Pins – Flexible pin configuration for sensors, actuators, and peripherals\n\nIntegrated Antenna – On-board chip antenna with option to connect an external antenna\n\nGrove Compatible – Attach Seeed Grove modules via the optional RBLink expansion board (no soldering required)\n\nHeaders Pre-Soldered – Ready to use on breadboards straight out of the box\n\n\nSpecifications\n\n\nProcessor – STM32F205 ARM Cortex-M3 @ 120 MHz\n\nSRAM – 128 KB\n\nFlash – 1 MB (MCU) + 2 MB on-board SPI flash\n\nWireless – Broadcom BCM43438: Wi-Fi 802.11n (2.4 GHz) + Bluetooth 4.1 Dual Mode\n\nAntenna – Integrated chip antenna (external antenna connector available)\n\nI/O Pins – 18\n\nStatus Indicator – RGB LED\n\nDimensions – 40 × 20 × 13 mm\n\n\nIdeal For\n\nIoT prototyping and connected device development\nWi-Fi and Bluetooth enabled projects\nCloud-connected sensor networks\nWearable electronics\n\n\nPackage Contents\n\n1× RedBear Duo (with headers soldered)\n\n\nResources\n\nRedBear Duo on GitHub\n","vendor":"Little Bird","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":8781,"title":"Default Title","sku":"RB-REDBEARDUO","price":49.2,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}