# DFRobot Beetle RP2350

> Ultra-affordable RP2350 dual-architecture development board with switchable ARM Cortex-M33 / RISC-V cores, LiPo charging, 11 GPIO pins, and USB-C in a 25x20.5mm package.

## Quick Facts

- **Brand:** DFRobot
- **Price:** ~$4.9
- **Product Readiness:** Consumer Ready
- **CPU:** RP2350 Dual-core ARM Cortex-M33 / RISC-V Hazard3 @ 150MHz
- **CPU Architecture:** ARM Cortex-M33 / RISC-V Hazard3
- **CPU Cores:** 2
- **RAM:** 520KB SRAM
- **Flash:** 2MB
- **USB:** USB-C
- **Power:** 5V via USB-C / LiPo battery (BAT pin)
- **Operating Voltage:** 3.3V
- **Operating Temp:** -10°C to 60°C
- **Dimensions:** 25 × 20.5mm
- **Weight:** 17g
- **Battery:** LiPo (user-supplied, 1.25mm JST)
- **Antenna:** N/A

## Use Cases

- compact-iot-node
- educational-platform
- wearable
- smart-home

## Components

- **RP2350** (mcu): Raspberry Pi RP2350 with switchable dual-core ARM Cortex-M33 and RISC-V Hazard3 cores at 150MHz, 520KB SRAM, PIO state machines, and hardware security features. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.raspberrypi.com%2Frp2350%2Frp2350-datasheet.pdf&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export)

## Protocols

- **UART** (UART0): TX: GPIO0, RX: GPIO1
- **SPI** (SPI0): SCK: GPIO2, MOSI: GPIO3, MISO: GPIO4, CS: GPIO5
- **I2C** (I2C0): SDA: GPIO20, SCL: GPIO21

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | Digital I/O / UART TX | UART | digital-input, digital-output, pwm |
| GPIO1 | Digital I/O / UART RX | UART | digital-input, digital-output, pwm |
| GPIO2 | Digital I/O / SPI SCK | SPI | digital-input, digital-output, pwm |
| GPIO3 | Digital I/O / SPI TX | SPI | digital-input, digital-output, pwm |
| GPIO4 | Digital I/O / SPI RX | SPI | digital-input, digital-output, pwm |
| GPIO5 | Digital I/O / SPI CS | SPI | digital-input, digital-output, pwm |
| GPIO20 | Digital I/O / I2C SDA | I2C | digital-input, digital-output, pwm |
| GPIO21 | Digital I/O / I2C SCL | I2C | digital-input, digital-output, pwm |
| GPIO26 | Analog A0 / I2C SDA | ADC/I2C | digital-input, digital-output, adc, pwm |
| GPIO27 | Analog A1 / I2C SCL | ADC/I2C | digital-input, digital-output, adc, pwm |
| GPIO25 | Onboard LED | GPIO | digital-input, digital-output, pwm |

## Description

## Overview

The DFRobot Beetle RP2350 is an ultra-compact, budget-friendly development board featuring the Raspberry Pi RP2350 dual-architecture processor. At just $4.90, it offers switchable ARM Cortex-M33 and Hazard3 RISC-V dual cores running at 150MHz, with 520KB SRAM and 2MB flash in a coin-sized 25x20.5mm footprint.

The board integrates lithium battery charging management and voltage monitoring, allowing portable battery-powered operation without external charging circuits. It exposes 11 programmable I/O pins and supports USB-C for programming and power. The single-sided component layout with half-hole design enables both prototyping and SMT production integration.

Supporting C/C++, MicroPython, and Arduino development environments, the Beetle RP2350 targets space-constrained applications including wearables, smart home devices, and industrial IoT. Its dual-architecture flexibility lets developers choose between ARM and RISC-V depending on their application needs.

## Where to Buy

- [DFRobot](https://openhardware.directory/r?to=https%3A%2F%2Fwww.dfrobot.com%2Fproduct-2913.html&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export) — $4.90

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.dfrobot.com%2Fproduct-2913.html&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_DFR1188_Beetle_RP2350&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export)
- [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.raspberrypi.com%2Frp2350%2Frp2350-datasheet.pdf&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export)
- [schematics](https://openhardware.directory/r?to=https%3A%2F%2Fdfimg.dfrobot.com%2F5d57611a3416442fa39bffca%2Fwiki%2Ff18e5f3a683e6d8a9c8582ac6f89b023.pdf&ref=openhardware.directory&product=dfrobot-beetle-rp2350&source=md-export)

## Images

![DFRobot Beetle RP2350](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-beetle-rp2350/2fca1ca3df15.jpg)
![DFRobot Beetle RP2350](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-beetle-rp2350/0d8526fb8f02.jpg)
![DFRobot Beetle RP2350](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-beetle-rp2350/087d426a152b.jpg)
![DFRobot Beetle RP2350](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-beetle-rp2350/24aac2923424.jpg)

> **Battery Powered:** Li-Po

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