Seeed Studio Seeeduino Lotus Cortex-M0+ ATSAMD21 Development Board

The Seeed Studio Seeeduino Lotus Cortex-M0+ is a development board built around the ATSAMD21 32-bit ARM Cortex-M0+ microcontroller, running at 48 MHz. It combines the functionality of a Seeeduino and a Base Shield in a single unit, with 256 KB of Flash and 32 KB of SRAM.

Overview

This board is an upgraded version of the Seeeduino Lotus V1.1, featuring a more powerful chip, an optimised circuit layout and improved power supply stability. The chip handles USB communication natively, so no separate serial-to-USB chip such as the CP2102N is required. This leaves an additional hardware serial port available for user projects. The board is fully compatible with the Arduino UNO form factor and IDE.

Key Features

• Microcontroller: ATSAMD21 (ARM Cortex-M0+ 32-bit, 48 MHz)
• I/O pins: 14 digital input/outputs (10 supporting PWM) and 6 analogue input/outputs
• Connectivity: 3 Serial Communication Interfaces, a micro USB connector and an ICSP header
• Integrated Grove System: 12 on-board Grove connectors for plug-and-play connection to sensors, actuators and displays without soldering
• Flexible power: operation via micro-USB or an external Li-Po battery connected through the JST2.0 connector
• Charging: up to 2 A maximum charging current for connected batteries
• Low power design: the efficient Cortex-M0+ core and power management suit battery-operated and low-power applications

Dimensions and Weight

The board has a width of 3.3, a depth of 1.5 and a height of 4.3, and weighs 10 g.

Applications

Suited to prototyping IoT devices, wearable technology and robotics, this board is also suitable for any project that requires robust connectivity and efficient power management, providing a flexible platform for development work.