Frequency counter (reciprocal) Gate time selectable from 0.1 second up to 60 seconds Frequency range from 0.1 Hz up to 10 MHz (tested) Input 3.3V and 5V safe Uses a STM32F103C8 (Blue Pill) and 16×4 LCD code is available on gitlab: https://gitlab.com/WilkoL/frequency-counter-with-v… Supplies: STM32F103C8 (Blue Pill) 16 x 4 LCD screen (HD44780 compatible) 10 MHz […]
Frequency Counter With Variable Gate Time Read More »
Gamify your chain reaction by using a Strawbees grabber connected to Makey Makey to start a timer in Scratch when you grab a conductive egg. Drop the egg on the Strawbees roller coaster track. When the egg rolls into the egg drop, it stops the timer. Here is what our full project in action looks
Chain Reactions With Strawbees and Makey Makey Read More »
The first rudimentary methods of telling time involved simple observations of the natural world, perhaps by wedging sticks in the ground and monitoring the movements of the shadows. This particular experiment would have evoked the most fundamental part of a sundial, the gnomon (pronounced nom-on), which is the component that casts the shadow. It’s easy
How did ancient civilizations use sundials to tell time? Read More »
