The rig is composed of a Teensy++ 2.0, eighteen red LEDs, eighteen resistors, and a few bits of laser-cut plastic. LEDs are used to both illuminate the paper and sense the holes. The sensor design is based on the classic Arduino LED sensing code. It’s not very reliable, but it’s a fun afternoon proof-of-concept.
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!
Maker Business — American startups are having an increasingly smaller share of the market
Wearables — Switch the advantage
Electronics — Don’t float!
Biohacking — Optimizing the Warm Up
Python for Microcontrollers — CircuitPython 3.0.0 released!
No comments yet.
Sorry, the comment form is closed at this time.