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Seeeduino XIAO SAMD21 Breaks When Powered by 220v Source

Products & Technology XIAO

msfujino January 7, 2023, 6:49am 12

cgwaltney,

Try the links below.

How to unbrick a dead XIAO using a XIAO(DAPLink) and OpenOCD XIAO

The bootloader area of a XIAO is not write-protected when it is shipped from Seeed. If this area is overwritten for any reason, a XIAO will lose its COM port, will not respond to “double reset”, and will be bricked. A bricked XIAO can be repaired by re-writing the bootloader. All I needed was a XIAO uploading “simple_daplink_xiao.uf2”, OpenOCD that comes with Arduino IDE, and some script files that I attached. Connect a bricked XIAO and a DAPLink_XIAO with four wires, and double-click “flash.ba…

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