Initial version (test / feasibility on esp32 and esp8266)

README.md

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+# Thermo Printer Interface / Remote Control
+
+## Overview
+
+This is about a device that can be called by WLAN / TCP/IP and prints on a cheap thermo printer using paper rolls.
+
+Hardware used:
+- ESP-CPU:
+  -- Wemos ESP32 LoLin (any ESP32 should work), we are using UART1 (GPIO26=Tx)
+  -- Wemos ESP8266 (any should work), we are using UART1 Tx only (GPIO2=Tx)
+- GOOJPRT QR204 Micro Embedded Printer with RS232/TTL and USB-Interface
+  -- TX, RX, GND connected to ESP32
+  -- POWER connected to seperate power supply (+5V/GND)
+
+
+## How to install this app
+
+- Install and start [mos tool](https://mongoose-os.com/software.html)
+- Switch to the Project page, find and import this app, build and flash it:
+
+<p align="center">
+  <img src="https://mongoose-os.com/images/app1.gif" width="75%">
+</p>