Summary: In this episode, we explore the timing of the digitalWrite commands and its important figures of merit using the Digilent Analog Discovery 2 scope. We find: The rise time is shorter than what we can measure, 10 nsec. The delay() function gives a very accurate delay turn on or turn off time The shortest on or off time we can get is about 4 usec. To turn on faster, we need to use the…
Category: Science Experiments with Arduinos and the Multi-Function Board
A Low Cost Ultra-bright LED kit.
If you love LEDs, and who doesn’t, you sometimes want the brightest you can find. For less than $2, you can purchase this assortment of 100 ultra-bright LEDs in five colors, from AliExpress.
A Must-Have Kit- LED Accessories
Every experimenter should have this LED accessory kit. The typical price is about $2.50, shipping included. They are so cheap and useful, I always have a few of them in my lab ready to grab for quick experiments. When I am looking for an LED or switch or jumper wire, this is my goto kit.