Wiki: DFRobot Beetle RP2040 is a development board built around the Raspberry Pi RP2040 chip, a dual-core ARM Cortex-M0+ processor with up to 133MHz clock and 264KB internal RAM, and supports USB 1.1 devices.
Gravity Expansion Board for Raspberry Pi Pico Wiki - DFRobot
DFRobot DFR1117 Beetle ESP32 C6 Mini Development Board for Wireless Smart Wearable Device (Supports BLE, Battery Charging)
Beetle BLE - The Smallest Board Based on Arduino Uno with Bluetooth 4.0 - DFRobot
3 PCS Waveshare RP2040-Zero Based On Raspberry Pi Microcontroller RP2040 A Low-Cost High-Performance
Beetle BLE - The Smallest Board Based on Arduino Uno with Bluetooth 4.0 - DFRobot
Beetle RP2040 Mini Development Board - DFRobot
Beetle RP2040 Mini Development Board - DFRobot
DF Robot Beetle Pi Pico RP2040 - Micro Robotics
DF Robot Beetle Pi Pico RP2040 - Micro Robotics
RP2040-Zero MCU Board Mini ver. Without Pinheader
Arduino Seeed Studio Wiki
DFRobot Math Automatic expansion board for micro:bit with 16 programmable touch keys 2 motor IO I2C ports support Mind+ makecode