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update thermal printer README DC2 # n

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cuu 2023-11-27 17:49:28 +13:00
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Code/thermal_printer/README.md
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@ -44,27 +44,19 @@ https://github.com/clockworkpi/DevTerm/blob/81addc7f4ba1eb4acb2f59fb1fef70386dbe
#### DC2 # n
n:0-F, set printer printing density
```
echo -en "\x12\x23\x0" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x1" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x2" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x3" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x4" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x5" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x6" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x7" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x8" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\x9" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xa" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xb" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xc" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xd" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xe" > /tmp/DEVTERM_PRINTER_IN
echo -en "\x12\x23\xf" > /tmp/DEVTERM_PRINTER_IN
```
If you want to set the printing depth (printer heating time), you can use the following command to set it:
default density is 6
For the lightest:
`echo -en "\x12\x23\x0" > /tmp/DEVTERM_PRINTER_IN`
For the darkest:
`echo -en "\x12\x23\xf" > /tmp/DEVTERM_PRINTER_IN`
There are a total of 16 levels from 0 to 0xf. The default density is 6.
The heating time can be determined using the formula "n * (300 + n*46) microseconds."
#### DC2 T
print the test page