Learn how calculators work by making your own with Arduino
Although at first glance, you might think "Why would I make my own calculator?" ... but why not? One of the great benefits of the Arduino platform is the ability to recreate various devices - and during that process, gain a much deeper understanding of how they work.
An interesting example of this has been published by Don van der Drift, who shows us how to make a simple calculator with some inexpensive parts.
Don uses a common 16-button numeric keypad, and we really like how he has simplified reading the keypad by using resistors across various outputs so the whole thing can be read by one analog input.
To build your own version of this system - check out the tutorial page to see the example setup and code links.
And if you're interested in doing this yourself, PMD Way can help you with the parts, such as:
- Arduino Uno-compatible boards
- 1602 character LCDs
- numeric keypads
- solderless breadboards
- and a wide range of electronic components