Microcontroller | Mini Thermal Receipt Printer | Adafruit Learning System
I’m a bloody newbee in this group and I need some advise:

I’m trying to connect a thermal printer [1] to the ESP8266 (Wemos d1 mini[2]) via a level converter [3]. The thermal printer works fine if I connect it to an arduino but it refuses to print something with the ESP8266 (even If I change the timeoutWait function [4]).

Any hints what can go wrong? Thanks in advance 🙂

[1] https://learn.adafruit.com/mini-thermal-receipt-printer/microcontroller
[2] https://www.wemos.cc/product/d1-mini.html
[3] https://www.adafruit.com/product/1787
[4] https://github.com/adafruit/Adafruit-Thermal-Printer-Library/issues/23

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