Discription

To make Raspberry Pi Pico more robust for TFLite Micro, the Arducam team took the Raspberry Silicon (also known as the RP2040 chip) and created Pico4ML, a microcontroller dev board made exclusively for running and training machine learning examples.

Arducam Pico4ML Specifications

• Microcontroller: Raspberry Pi RP2040
• IMU: ICM-20948 (low power)
• Mono channel microphone w/ direct PCM output
• Camera Module: HiMax HM01B0, HM036, Up to QVGA (320 x 240 @60fps)
• Screen: 0.96 inch LCD SPI Display (160 x 80, ST7735)
• Operating Voltage: 3.3V
• Input Voltage: VBUS: 5V +/- 10%. VSYS Max :5.5V
• Length: 51 mm
• Width: 21 mm
• Bluetooth module

IMU Specifications

• 3-axis gyroscope, 3-axis accelerometer, 3-axis compass, and a Digital Motion Processor™ (DMPTM) in a 3 mm x 3 mm x 1 mm (24-pin QFN) package
• DMP offloads computation of motion processing algorithms from the host processor, improving system power performance
• EIS FSYNC support
• Lowest Power 9-Axis Device at 2.5 mW
• 3-Axis Gyroscope with Programmable FSR of ±250 dps, ±500 dps, ±1000 dps, and ±2000 dps
• 3-Axis Accelerometer with Programmable FSR of ±2g, ±4g, ±8g, and ±16g
• 3-Axis Compass with a wide range to ±4900 μT
• Onboard Digital Motion Processor (DMP)
• Android support
• Auxiliary I2C interface for external sensors
• On-Chip 16-bit ADCs and Programmable Filters
• 7 MHz SPI or 400 kHz Fast Mode I²C
• Digital-output temperature sensor
• VDD operating range of 1.71V to 3.6V
• MEMS structure hermetically sealed and bonded at wafer level
• RoHS and Green compliant
• Microphone
• Direct PCM output
• 20 bit, 16 kHz Sample Rate
• Mono Channel
• 64dB signal-to-noise ratio

Bluetooth Specifications

• Bluetooth 5.0
• 40KB RAM+8KB Cache + 4Mb Flash
• Tx Power:﹢ 5dBm
• Input Voltage: 1.8~3.6V
• 2 x TWI/I2C, 3 x UART, 3 x SPI, 5 x PWM
• Supported Platform: Zephyr RTOS
• Firmware upgrade throughUART0, SWD, OTA
• Mono Sigma Delta Voice ADC, 16bit;16KHz sample rate; SNR (A weighted): 83dB
• Configurable high pass filter with ADC
• Support mono DMIC IN, DMIC Clock up to 3MHz
• I2S Tx: standard I2S, Support both the master mode and slave mode, sample rate up to 44.1KHz/48KHz
• I2S Rx: standard I2S and TDM4 mode, Support both the master mode and slave mode, sample rate up to 44.1KHz/48KHz.
• Dimensions: 18 x 15 mm with antenna, 15 x 13 mm without antenna.

RP2040 Specifications

• Dual-core Arm Cortex-M0+ processor, flexible clock running up to 133 MHz.
• 264KB on-chip SRAM.
• 2MB on-board QSPI Flash.
• 26 multifunction GPIO pins, including 3 analogue inputs.
• 2 × UART, 2 × SPI controllers, 2 × I2C controllers, 16 × PWM channels.
• 1 × USB 1.1 controller and PHY, with host and device support.
• 8 × Programmable I/O (PIO) state machines for custom peripheral support.
• Supported input power 1.8–5.5V DC.
• Operating temperature -20°C to +85°C.
• Castellated module allows soldering direct to carrier boards.
• Drag-and-drop programming using mass storage over USB.
• Low-power sleep and dormant modes.
• Accurate on-chip clock.
• Temperature sensor.
• Accelerated integer and floating-point libraries on-chip.