This is a library to facilitate printing on the thermal printer sold from Adafruit. It supports printing text, barcodes, and images. Almost all functions are documented except the ones used for converting color or grayscale images to black and white. The function “printImageWithEffect()” converts the supplied image to grayscale, resizes it to one third of the printer resolution, calculates for each pixel the amount of gray and transforms it to a 3×3 grid of pixels which has some pixels black and some white effectively making it look more or less black. Enjoy!
Adafruit IoT Printer Project Pack Internet of Things printer. Build an Internet of Things connected mini printer that will do your bidding! This is a fun weekend project that comes with a beautiful laser cut case. Once assembled, the little printer connects to Ethernet to get Internet data for printing onto 2 1/4 wide receipt paper. The example sketch weve written will connect to Twitters search API and retrieve and print tweets according to your requests: you can have it print out tweets from a person, a hashtag, mentioning a word, etc! Once youve gotten that working, you can of course easily adapt our sketch to customize the printer.
The project is not very difficult but does require some light soldering, so youll want to have a little experience with a soldering iron. Youll also need a small flathead screwdriver to assemble the box. Its also best if youve had a little Arduino experience so you can feel comfortable downloading the IDE and uploading our example sketch.
This pack does not contain an Arduino+Arduino Ethernet Shield, Arduino Ethernet or Ethernet cable To complete the project you will need to add either an Arduino + Ethernet Shieldor an Arduino UNO Ethernet. If youre using an Arduino UNO Ethernet you will also need an FTDI friend or FTDI cable to upload the sketch. A plain straight-thru Ethernet cable is also required (any length)
Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.