ESP8266 HUZZAH + Thermal Printer?

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rileyjshaw
 
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Joined: Thu Feb 04, 2016 9:19 pm

ESP8266 HUZZAH + Thermal Printer?

Post by rileyjshaw »

Hi!

I'm looking to hook a thermal printer[1] up to the internet so it can print out some simple* POST requests. The HUZZAH[2] seems like a cheap and simple way to achieve this, but I'm wondering if I'll need any extra hardware** to get the job done.

Thanks!

* I only need to print text, nothing too fancy. The ability to print images would be a sweet bonus, though :)
** Apart from this power supply[3], a DC adapter[4], and some thermal paper[5].

[1]: https://www.adafruit.com/products/2752
[2]: https://www.adafruit.com/products/2471
[3]: https://www.adafruit.com/products/276
[4]: https://www.adafruit.com/products/368
[5]: https://www.adafruit.com/products/2755

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adafruit_support_mike
 
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Joined: Thu Feb 11, 2010 2:51 pm

Re: ESP8266 HUZZAH + Thermal Printer?

Post by adafruit_support_mike »

You'll probably want a 74AHCT125 to convert the ESP8266's 3.3v signals to 5v signals the printer prefers: https://www.adafruit.com/products/1787

You really don't need to connect the printer's TX pin back to the ESP8266's RX pin, but if you do, make sure you use a level shifter that way too.. 5v to 3.3v.

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