Programmer's Calculator
Finished look
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Programmer's calculator (buzzer)
A new peripheral for the calculator - a passive buzzer.
Calculation
A passive buzzer with a coil resistance of 16 from an Arduino kit is used. Here’s how it looks with a soldered diode. The diode is necessary because this is an electromagnetic buzzer, not a …
Programmer's calculator
This is a very simple thing - a desktop calculator for operations in different number systems.
It is imagined as having a few lines of display, a lithium battery, and a keyboard with a small number of keys.
Keyboard
I will use Rue Mohr's scanless keyboard design http://ruemohr.org/~ircjunk …