sending hex bytes to serial in bash - strange output
<p><a href="https://i.stack.imgur.com/BFzV1.png" rel="nofollow"><img src="https://i.stack.imgur.com/BFzV1.png" alt="enter image description here"></a>I can send hex this way:</p>

<p>echo -en '\x10\x02\x06\x00\x0E\x00\x00\x00\x9E\x09\x78\x06\x06\x26\x04\x0A\x02\x06\xD3\x03' > /dev/ttyUSB0</p>

<p>when I open a 2nd terminal for reading (cat &lt; /dev/ttyUSB0) I only get some strange output. It is a square with number 15 in it. what am I doing wrong?</p>