boards/wemos-zero: add note for identification

The variant with HW-819 is easier to buy these days and identical to the original wemos-zero variant including the swapped D2/D4 pins. Co-authored-by: mguetschow <[email protected]>
RIOT-OS · Nov 19, 2024 · fd233fe · fd233fe
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commit fd233fe
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/boards/wemos-zero/doc.txt b/boards/wemos-zero/doc.txt
@@ -6,13 +6,14 @@
 ## Overview
 
 The WeMos Zero is a cheap clone of Arduino Zero featuring a ATSAMD21G18A.
+These boards either have a silkscreen "WeMos" or "HW-910" label on their back.
 Unlike the original Zero, it does not include an embedded debugger/programmer.
 Instead, the [UF2 Bootloader](https://github.com/microsoft/uf2-samdx1) is
 used to program this board. The SAMD21 is a ARM Cortex-M0+ micro-controller.
 It has 256KiB of flash memory and 32KiB of RAM.
 
-Note: The official Arduino Zero using the native USB port and the Adafruit
-Metro M0 Express should also work with board definition.
+@note The official Arduino Zero using the native USB port and the Adafruit
+      Metro M0 Express should also work with this board definition.
 
 ## Hardware