Spectrophotometry is an important scientific tool, most commonly used in biology and chemistry. It’s a method to measure the amount of light absorbed by a chemical solution at various different wavelengths. While it’s typically the preserve of expensive lab equipment, [Daniel Hingston] built a rig to do the job at home. The heart of the rig […]
ARDUINO RIG DOES SPECTROPHOTOMETRY Continue Reading
What could be more terrifying than ghosts, goblins, or clowns? How about a shapeless pile of fright on your bedroom floor that only moves when you’re not looking at it? That’s the idea behind [Sciencish]’s nightmare robot, which is lurking after the break. The Minecraft spider outfit is just a Halloween costume. In this case, “looking
NIGHTMARE ROBOT ONLY MOVES WHEN YOU LOOK AWAY Continue Reading
Let’s Start Coding Offers Customizable Electronic Kits That Teach Kids 8-12 Real Code in a Hands-on Way Remember how much fun you had with chemistry sets from your childhood? You made things blow up and glow and learned about chemistry in the process. Let’s Start Coding is the “chemistry set” for today’s kids, teaching them
GIVE THE GIFT OF REAL-WORLD CODING SKILLS TO TWEENS THIS HOLIDAY SEASON Continue Reading
How it works: The flashlight turns on automatic for 60 seconds when it senses that the room is dark enough. To turn on manual light for additional 60 seconds you need to push the RST button. The Light sensing LED Flashlight is invaluable for emergencies such as power failures or blackouts. Step 1: The Flashlight
Build A Smart LED Flashlight Using Arduino Continue Reading
The TPS2378 is an IEEE802.3at (Power over Ethernet) Powered Device controller, featuring internal pass MOSFET for loads up to 25.5W, Type 1 (a.k.a. 802.3af) compatibility and auxiliary power source support. The IC is normally used together with a DC-DC step down regulator to power a network device (the PD) from a PoE compliant switch or
Power over Ethernet Flashlight Continue Reading
You probably know the game of flashlight-tag. You just run around in the dark on a campsite. You hold your flashlight and try to shine it on one of the other kids, without the other kids shining their lights on you. I wanted to make this game electronic. The Arduino is my first choice, but
Flashlight tag using an Arduino board Continue Reading
