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Update hardware-connection.md

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Signed-off-by: Luc <8822552+luc-github@users.noreply.github.com>
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@ -114,7 +114,7 @@ To connect the ESP12e to the UART0. (Credits:<https://www.lesimprimantes3d.fr/fo
5V (buck to 3.3v if directly connect to ESP - most development ESP boards already have this voltage limited built-in - but check!) and GND can be taken from the AUX3 exposed connector.
UART0 is normally used by USB port so don't use both together - so this hack piggybacks on that same port at UART level.
<img src='https://raw.githubusercontent.com/wiki/luc-github/ESP3D/images/Trigorilla/board.jpg' width='200'><br>
<a href="https://raw.githubusercontent.com/wiki/luc-github/ESP3D/images/Trigorilla/board.jpg" target="_blank"><img src='https://raw.githubusercontent.com/wiki/luc-github/ESP3D/images/Trigorilla/board.jpg' width='200'></a><br>
click to enlarge
<img src='https://raw.githubusercontent.com/wiki/luc-github/ESP3D/images/Trigorilla/nodemcu.jpg' width='200'><br>