The Adafruit Feather Bluefruit Sense takes the popular Feather nRF52840 Express and adds a smorgasbord of sensors to make a great wireless sensor platform. This Feather microcontroller comes with Bluetooth Low Energy and native USB support featuring the nRF52840! This Feather is an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built-in USB plus battery charging. With native USB it works great with CircuitPython, too. Like the Feather nRF52840, this chip comes with Arduino IDE support - you can program the nRF52840 chip directly to take full advantage of the Cortex-M4 processor, and then call into the Nordic SoftDevice radio stack when you need to communicate over BLE. Since the underlying API and peripherals are the same for the '832 and '840, you can supercharge your older nRF52832 projects with the same exact code, with a single recompile! This Feather is also a BLE-friendly CircuitPython board! CircuitPython works best with disk drive access, and this is the only BLE-plus-USB-native chip that has the memory to handle running a little Python interpreter. The massive RAM and speedy Cortex M4F chip make this a good match. Make centrals or peripherals with the ease of CircuitPython. FEATURES: ARM Cortex M4F (with HW floating point acceleration) running at 64MH 1MB flash and 256KB SRAM Native Open Source USB stack - pre-programmed with UF2 bootloader Bluetooth Low Energy compatible 2.4GHz radio (Details available in the nRF52840 product specification) FCC / IC / TELEC certified module Up to +8dBm output power 1.7v to 3.3v operation with internal linear and DC/DC voltage regulators 21 GPIO, 6 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules with 4 outputs each) Pin #3 red LED for general purpose blinking, NeoPixel for colourful feedback Power/enable pin Measures 2.0x0.9x0.28" (51x23x7.2mm) without headers soldered in 6 grams 4 mounting holes Reset button SWD connector for debugging Works out of the box with all Adafruit FeatherWings (Even the UART-using ones like the GPS FeatherWing) Package Includes: 1 x Adafruit Feather nRF52840 Express
Specifications
| Item Type: | ESP32 Based |
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| Flash Memory: | 1MB |
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| Clock Frequency | 64 |
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| Product Type | Development board |
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| Model No. / Name: | nRF52840 ARM Cortex |
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| Operating Voltage (VDC): | 3.3 |
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| Clock Speed | 64MHz |
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| Program Memory (KB) | 256 |
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| Shipping Weight | 0.01 kg |
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| Shipping Dimensions | 10 × 11 × 1 cm |
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