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Adafruit Adafruit Feather nRF52840 Express
You can program the nRF52840 chip directly to take full advantage of the Cortex-M4 processor, and then calling 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! 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. Peripherals Plenty of GPIO, analog inputs, PWM, timers, etc. Best of all, it's got that native USB! Finally, no need for a separate USB serial chip like CP2104 or FT232. Serial is handled as a USB CDC descriptor, and the chip can act like a keyboard, mouse, MIDI device, or even disk drive. This chip has TinyUSB support – that means you can use it with Arduino as a native USB device and act as UART (CDC), HID, Mass Storage, MIDI, and more! Features ARM Cortex M4F (with HW floating point acceleration) running at 64 MHz 1 MB flash and 256 KB SRAM Native Open Source USB stack (pre-programmed with UF2 bootloader) Bluetooth Low Energy compatible 2.4 GHz radio FCC / IC / TELEC certified module Up to +8 dBm output power 1.7 V to 3.3 V operation with internal linear and DC/DC voltage regulators 21 GPIO, 6x 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 colorful feedback Power/enable pin Measures 2.0 x 0.9 x 0.28' (51 x 23 x 7.2 mm) without headers soldered in Light as a (large?) feather (6 grams) 4 mounting holes Reset button SWD connector for debugging
€ 32,95
Members € 29,66
Adafruit Adafruit CLUE - nRF52840 Express with Bluetooth LE
Features Nordic nRF52840 Bluetooth LE processor – 1 MB of Flash, 256KB RAM, 64 MHz Cortex M4 processor 1.3″ 240×240 Color IPS TFT display for high-resolution text and graphics Power it from any 3-6V battery source (internal regulator and protection diodes) Two A / B user buttons and one reset button ST Micro series 9-DoF motion – LSM6DS33 Accel/Gyro + LIS3MDL magnetometer APDS9960 Proximity, Light, Color, and Gesture Sensor PDM Microphone sound sensor SHT Humidity BMP280 temperature and barometric pressure/altitude RGB NeoPixel indicator LED 2 MB internal flash storage for datalogging, images, fonts or CircuitPython code Buzzer/speaker for playing tones and beeps Two bright white LEDs in front for illumination / color sensing Qwiic / STEMMA QT connector for adding more sensors, motor controllers, or displays over I²C. You can plug in GROVE I²C sensors by using an adapter cable. Programmable with Arduino IDE or CircuitPython
€ 59,95
Members € 53,96