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!

[via the Makeshift newsletter]

6 thoughts on “Knock Knock Calculator

  1. mark says:

    great innovation! it makes learning more interesting and easy for kids at early age.. it develops good grasps of maths while enjoying it.. there are some projects also that’s intuitive to learning, but i find this best since it can be used/played as early as 2 year old children.. thumbs up to this.. awesome!

  2. Brandt says:

    I would love to see a schematic for this!

  3. รับนำเข้าสินค้าจากจีน says:

    My developer is trying to convince me to move to .net from
    PHP. I have always disliked the idea because of the costs.

    But he’s tryiong none the less. I’ve been using WordPress on various websites for about a year and am concerned about switching to another platform.
    I have heard very good things about Is there a way
    I can import all my wordpress content into it? Any kind of help would be really appreciated!

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