Seeeduino Lotus Cortex-M0+ is a SAM D21 Microcontroller development board. The Atmel® | SMART™ SAM D21 is a series of low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor with 256KB Flash and 32KB of SRAM. you can consider the Seeeduino Lotus Cortex-M0+ as a combination of Seeeduino and Base Shield.
Seeeduino Lotus Cortex-M0+ has 14 digital input/outputs (10 of which support PWM) and 6 analog input/outputs, 3 Serial Communication Interface, a micro USB connector, a JST2.0 Li-Po connector, an ICSP header, 12 Grove connectors, a reset button.
Seeeduino Lotus Cortex-M0+ is an upgraded version of Seeeduino Lotus V1.1, it replaces a more powerful chip, optimizes the circuit layout, and the power supply is more stable. Because this chip supports direct USB level output, there is no need to use a serial port to USB chip, like CP2102N. Therefore, one more hardware serial port is available to the user.
All the I/O pins are 3.3V, please do not input more than 3.3V, otherwise the CPU may be damaged.
This is the wiki page for this product, which will show you how to use the product, as well as details about the software and hardware.
Hi Alex, Sorry, do you mean SWD? I do'n found the SDW lable. If you mean SWD, it's a interface for burn the firmware. Regards
Hi Matt, yes, you can use the solar panel for power supply. You can find the input votage range in the Learn Tab -- wiki. It's 3.5V to 4.2V. And please pay attention that, if you use a solar panel to charge this board, do not plug the micro-USB at the same time. Otherwise,the usb port will charge the solar panel, it may damage your solar pannel.
If you need to use the solar panel, you need to use DC-DC module to conver the input voltage to 3.3V before you plug it into the JST2.0 port. The Vsys can not over 4,4V.