A compact, low-cost development board built around the Raspberry Pi RP2350 microcontroller, with a 2.8″ 240×320 IPS display, 5-point capacitive touch, built-in IMU, LiPo charging and more!

At its core of this dev board is an RP2350 – a dual-core ARM Cortex-M33 and dual-core Hazard3 RISC-V processor design, running at up to 150 MHz with 520KB of SRAM. Waveshare have also added 16MB of onboard flash memory to open this up to more projects.

The capacitive touch panel connects via I2C and supports 5-point touch and interrupts for responsive UI control.

It includes a QMI8658 6-axis accelerometer and gyroscope sensor, speaker outputs with amplifier (speakers included!), RTC, slot for a MicroSD card and PicoBlade/MX1.25 battery charge management circuit. It also supports USB device/host functionality, drag-and-drop programming via USB mass storage, and flexible expansion via GPIO, UART, and I2C (Qwiic-style connector) interfaces. Multiple power modes and a flexible clock system allow for low power consumption in various scenarios.

The board comes with a pair of mini 8 2W speakers and jumper assembly cables.

Features

• Powered by Raspberry Pi RP2350
  • Dual-core ARM Cortex-M33 + dual-core Hazard3 RISC-V architecture
  • Up to 150MHz clock speed
  • 520KB SRAM
• 16MB onboard flash (W25Q128JVSIQ)
• 2.8″ IPS display (240×320 resolution) with 5-point capacitive touch
• Touch interface connected via I2C with interrupt support
• QMI8658 6-axis IMU (3-axis accelerometer + 3-axis gyroscope)
• Onboard PCM5101 audio decoder with speaker amplifier
• Includes two 8 2W 2030 speakers with volume adjustment
• MicroSD (TF) card slot
• PCF85063 RTC chip with RTC battery header
• MX1.25 battery header (charge/discharge support for 3.7V LiPo)
• Battery power control button
• Battery charging indicator LED
• Power indicator LED
• Low-dropout regulator (ME6217C33M5G), 800mA output max
• 12-pin multifunction GPIO header
• UART header for serial communication
• I2C header (internal chip only, not remappable)
• USB Type-C for power and programming
• RESET and BOOT buttons
• Drag-and-drop programming via USB mass storage
• Multiple power modes and flexible clock configuration

What’s onboard?

1. RP2350A
   • Dual-core, dual-architecture, up to 150MHz
2. W25Q128JVSIQ
   • 16MB NOR-Flash
3. QMI8658
   • 6-axis IMU with 3-axis gyroscope and 3-axis accelerometer
4. RTC chip
   • PCF85063 RTC
5. PCM5101 audio decoder
6. Amplifier chip
7. Volume adjustment knob
8. Battery recharge manager
9. ME6217C33M5G
   • LDO regulator, 800mA max output
10. TF card slot
11. Battery power supply control button
    • Requires driver support
12. RESET button
13. BOOT button
14. 12-pin multifunctional header
15. USB Type-C port
16. I2C header
    • Internal use only; supports I2C peripherals only
17. UART header
18. MX1.25/PicoBlade battery header
    • 2-pin for 3.7V lithium battery, supports charge/discharge
19. RTC battery header
    • For rechargeable RTC cell
20. Speaker header
    • With 8 2W 2030 speaker
21. Power indicator
22. Charge indicator
    • LED shows charging status (on when charging, off when full; unknown if no battery)

Resources

• Product Wiki

Package Contents

• 1x RP2350 2.8″ Capacitive Touch Dev Board with 6-Axis IMU
• 1x 8 2W speaker assembly
• 2x SH1.0 4-pin cables
• 1x SH1.0 12-pin cables