escpos | ESC/POS Printer Library | 3D Printing library

Seems this is an issue affecting a lot of developers recently. Me too faced the same issue. The following solutions worked for me.

1. Change react-native-push-notification version to ^7.3.0. This solved the build issue in one of my project.

OR

1. Do the below mentioned changes.

In android/app/build.gradle, add the below code to dependencies:

implementation 'com.google.firebase:firebase-messaging:21.1.0'

In android/build.gradle, make the below changes:

Okay, problem solved..

make specific pitch setting on your Dot-matrix..

Change PS Pitch to Specific Pitch (ex : 10 cpi, 12 cpi, etc)

I think this is a little bit of problem..

in mike42 you should activate the requirement php extension in your server. in my case, i forgot activating intl extension

I have found a tool here that enables you to view the specs for all USB devices in the system

NirSoft USB viewer tool

The source is commented and tells you the following.

From https://github.com/mike42/escpos-php/blob/master/example/interface/windows-usb.php:

There are two possible methods.

One is to prepare image data of the same size as the paper width and place the logo image in the center.

It is necessary to make large white parts on the left and right of the logo image that is currently visible, and prepare and send data even if that part is not printed, but customer requests have changed and the entire paper width will be used. However, the amount of data does not change.

By applying it, it is possible to reduce the data in the blank area on the right side by preparing only the data for the blank area on the left side of the image.

The other is to specify the centering of the print content with the ESC a command before printing the image.

This should be sent with no print request at the beginning of the line.

Please refer to this page.
ESC a

[Name]
Select justification

[Format]

To cut paper use $cmds .= $esc . "m" instead of $cmds .= '0x1D 0x56';

That would be a PHP Composer feature.

COMPOSER

A Dependency Manager for PHP

Autoloading

For libraries that specify autoload information, Composer generates a vendor/autoload.php file. You can simply include this file and start using the classes that those libraries provide without any extra work:

Please refer to the explanation linked above.

The SPP-R410 Command Manual can be obtained here.
BIXOLON | Downloads :: mobile printer, portable printer...

According to it, the first 0x10 is unnecessary, only 0x04, 0x01 seems to be good.

Since the status to be notified should be either 0x12:Online or 0x1A:Offline, it is possible that either the correct data has not been notified or your interpretation is incorrect.

Even if the correct data is notified, neither of them is a printable character code, so even if you execute Encoding.UTF8.GetString() process, you cannot grasp the contents.
In this case, what you should do is BitConverter.ToString().
Alternatively, you can reader[0].ToString("X") only the first byte of the reader buffer, since only one byte will be reported.