SparkFun RedBoard Turbo -SAMD21 Development Board Powerful microcontroller Qwiic Connect System Integrated Regulated LiPo Charger Compatible with Arduino Micro-B USB Interface Power UF2 bootloader

If you’re ready to step up your programming game from older 8-bit/16MHz microcontrollers, the SparkFun RedBoard Turbo is a formidable alternative. At its heart, the RedBoard Turbo uses the ATSAMD21G18, which is an ARM Cortex M0+, 32-bit microcontroller that can run at up to 48MHz. With an impressive 4MB of external flash memory and a UF2 (USB Flashing Format) bootloader, the RedBoard Turbo provides you with an economical and easy to use development platform if you’re needing more power than the classic RedBoard.The SparkFun RedBoard Turbo has been equipped with a USB interface for programming and power, a Qwiic connector, an RTC crystal, WS2812-based addressable RGB LED, 600mA 3.3V regulator, and a variety of other components. To power the RedBoard Turbo, just plug it into a USB port on your computer via the micro-B port or directly into the wall with the 5V tolerant barrel jack. Not near a USB port? No problem, the SparkFun RedBoard Turbo is also equipped with a LiPo Battery connector (for a single-cell 3.7-4.2V litium-polymer battery). The MCP73831’s charge current is configured by a resistor value between 66kΩ and 2kΩ, to charge the battery at a rate between 15mA and 500mA, respectively. By default, the board is configured to charge the battery at around 250mA. If you’ve used any Arduino compatible board before, this pinout shouldn’t surprise you – the layout meets the Arduino 1.0 footprint standard, including a separate SPI header and additional I2C header.The RedBoard Turbo can even be flashed over the Mass Storage Class (MSC) just like a removable flash drive, thanks the the UF2 bootloader. With this bootloader, the RedBoard Turbo shows up on your computer as a USB storage device without having to install drivers! From the Arduino IDE platform, you’ll still need to select the correct port on your machine, but you can just as easily use another programming language such as CircuitPython or MakeCode.

• ATSAMD21G18 32-bit/48MHz ARM Cortex-M0+. 4MB Flash Memory. 32KB SRAM. 32KB of EEPROM (emulated in Flash).
• 26 GPIO Count. 14 ADC Channels at 12-bit Resolution. Analog-to-Digital and Digital-to-Analog Converters (ADC & DAC).
• Vin: 4.2V-6.0V for charger - otherwise 3.5V-6.0V. VBATT: 3.7V Lipo VCC: 600mA @3.3V.
• Compatible R3 Layout. Integrated USB Controller. RGB LED. Program in Arduino IDE Platform or with Python.
• UF2 Bootloader. Qwiic Connector. Does not include Qwiic cables.