RP2040 Prop-Maker Feather - board with RP2040 microcontroller and audio amplifier

Description

Feather RP2040 is a board equipped with the RP2040 microcontroller designed by the Raspberry Pi Foundation. The system has two ARM Cortex M0+ cores operating at a frequency of up to 133 MHz and 264 kB of RAM. The microcontroller is not equipped with flash memory, but on the board there is an external memory with a capacity of 8 MB connected via the QSPI interface.

On the board, apart from the RP2040 system and Flash memory, the user will find a 3.3 V voltage stabilizer, Boot and Reset buttons, LEDs and RGB NeoPixel, USB type C connector for powering and programming the module and 21 GPIO outputs on which such peripherals were derived such as four 12-bit ADC inputs, 16 PWM outputs, two I2C, SPI and UART interfaces. Additional sensors can be easily connected via the STEMMA QT connector and the I2C interface.

An important element of the board is a mono class D audio amplifier based on the MAX98357 chip. It can work with a speaker from 4 to 8 Ω with a power of up to 2.5 W and communicates via I2S. It allows users to set different modes (off, left channel, right channel and mixed) by changing the resistance on the SD pin (default is set to mixed mode). Besides, the user has a LIS3DH 3-axis accelerometer with tap detection, which can be used for motion, tilt detection.

The platform supports the popular MicroPython and C/C++ programming languages. Programs can be uploaded to the memory via the USB interface using the built-in bootloader.

Features

• RP2040 microcontroller designed by Raspberry Pi
• Two ARM Cortex-M0+ cores clocked up to 133 MHz
• 264 kB onboard SRAM
• Real Time Clock (RTC)
• MAX98357 class D mono amplifier:
  • Power: 1.8W into 8Ω, 2.5W into 4Ω
  • Speaker: 4 to 8 ohms
  • I2S interface
• LIS3DH 3-axis accelerometer
• Voltage stabilizer 3.3V 500mA
• 200 mA battery charging circuit
• Built-in USB Type-C connector for programming with USB 1.1 operating in Host and Device modes
• 21 x multifunctional GPIO pins
  • 4 x 12-bit ADC inputs with internal temperature sensor, 0.5 MSa/s
  • 16 PWM channels
  • 2 x UARTs
  • 2 x I2C
  • 2 x SPI
• Reset and Boot buttons
• LED and NeoPixel
• LiPo battery connector
• STEMMA QT connector compatible with Qwiic systems
• SWD interface connector
• 8 MB external Flash memory
• Supported programming languages: MicroPython and C/C++
• Dimensions: 52.1 x 22.8 x 12.2mm

Kit contains

• RP2040 Prop Maker Feather module
• 2 x 16-pin male goldpin connector