Look at those huge, razor-sharp image prints! You want some?
We’ve discovered that many of our thermal receipt printers…at least anything shipped in the last year or so…have a hidden capability, hardware handshaking…allowing an attached Arduino to run the printer at full-tilt. Pages feed fast and smooth, huge bitmaps don’t become garbled due to buffer overflows.
This does require a late-model printer (looks like firmware versions 2.64 & 2.68 support it, but perhaps others too) and a little bit of surgery. It’s a simple modification, just soldering on one wire, but this is a warranty-voiding procedure and might not be for everybody.
You can read about the hack in our Mini Thermal Receipt Printer guide on the Adafruit Learning System.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Steve Ballmer Serves Up a Fascinating Data Trove
Wearables — Chalk it up
Electronics — Look to ferrites (no, not ferrets, the European polecat) when faced with high frequency
Biohacking — A Run in the Altra IQ Smart Shoes
No comments yet.
Sorry, the comment form is closed at this time.