2MB SPI flash)—supports MakeCode
USB-B port
direct IDE programming (no helper MCU)
Adafruit Feather M0 Basic Proto uses ATSAMD21G18 Cortex-M0+ MCU (48MHz
Adafruit Circuit Playground Express 2MB SPI flash)—supports MakeCodeCircuit Playground Express (CPX) upgrades the Classic with ATSAMD21 Cortex M0+ (48MHz, 3. 3V, 2MB SPI flash)supports MakeCode, CircuitPython, Arduino IDE, code. org; no soldering. Ultimate intro for first year engineering students with 10 sensors actuators on a 50. 6mm dia., 8. 9g round board. 10x NeoPixels, LIS3DH accel, thermistor, phototransistor, MEMS mic, mini speaker, IR RX TX, 2 buttons, slide switch, 8 alligator pads (touch analog PWM I2C UART