Knock Knock Calculator

Arduino Education
Knock Knock Calculator

Knock Knock is a clever Arduino-controlled calculator toy, designed for small children. The user knocks out a calculation on the surface — addition, multiplication, subtraction, or division — and Knock Knock will spit back the solution, in the form of knocks, of course. Created by Switzerland designer Khalil Klouche, Knock Knock is brought to life with an Arduino, contact microphones, and solenoids. It’s a fun idea for a toy, but good luck trying to use this in secret during a “no calculators” test at school!

knock_knock
[via the Makeshift newsletter]

Discuss this article with the rest of the community on our Discord server!
Tagged

"To oppose something is to maintain it." –Ursula Le Guin

Currently: NEO.LIFE Alum: Instructables and MAKE

View more articles by Laura Cochrane

ADVERTISEMENT

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 16th iteration!

Prices Increase in....

Days
Hours
Minutes
Seconds
FEEDBACK