Planet Arduino

The scientific community cannot always agree on how much water a person needs in a day, and since we are not Fremen, we should give it more thought than we do. For many people, remembering to take a sip now and then is all we need and the H2gO is built to remind [Angeliki Beyko] when to reach for the water bottle. A kitchen timer would probably get the job done, but we can assure you, that is not how we do things around here.

A cast silicone droplet lights up to show how much water you have drunk and pressing the center of the device means you have taken a drink. Under the hood, you find a twelve-node NeoPixel ring, a twelve millimeter momentary switch, and an Arduino Pro Mini holding it all together. A GitHub repo is linked in the article where you can find Arduino code, the droplet model, and links to all the parts. I do not think we will need a device to remind us when to use the bathroom after all this water.

Another intrepid hacker seeks to measure a person’s intake while another measures output.

You can get a lot of quick info from a business card — name, job title, contact info — and now you can also see your heart beat.

Read more on MAKE

The post Hold This Smart Business Card to See Your Heart Beat appeared first on Make: DIY Projects and Ideas for Makers.

A reddit user asked for workouts for his brother, who lost his hands. Another user responded with a 3D printed prosthetic.

Read more on MAKE

The post Open Source Prosthetic Hands Focus on Function and Personality appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

One of our prime passions is to motivate the next great minds and ideas by posting informative step-by-step tutorials. To celebrate the launch of our fourth-generation muscle sensor, the MyoWare, we’ve put together a tutorial that will make you go berserk! This tutorial will teach you to build bionic claws using […]

Read more on MAKE

The post 3D Printed Bionic Claws with MyoWare Muscle Sensors appeared first on Make:.

Rise of the Brain-Computer Interface

Read more on MAKE

Until now, EMG equipment has been expensive and complicated. FlexVolt is hoping to make the technology accessible to anyone for under $100.

Read more on MAKE

The Beatband Sleeve joins a long list of projects attempting to read the human-mechanical heartbeat and visualize it as an electrical signal. Whether using midi controllers or operational amplifiers or infrared technology (and more recently IR in combination with an op-amp), makers love wearing their heartbeats as pendants or simply […]

Read more on MAKE

My Brainwave-Controlled Zen Garden is similar to a standard desktop zen garden in that you rake sand to calm yourself. In my version, though, the rake and resultant patterns are controlled by your actual brainwaves. If you are tense and worrisome, the rake moves randomly and quickly, scribbling odd patterns in the sand.

Read more on MAKE

Build an Arduino clone using the MintDuino and then program it to visualize your heartbeat in combination with the Pulse Sensor AMPed. The five LEDs mounted to the lid of the tin will flash in sync with your heartbeat's rhythm. Does your heartbeat speed up when you don't tell the truth? When you play video games? When you meditate, can you slow your heartbeat down? Build the Beatband Sleeve and find out!

Read more on MAKE

MAKE reader Scott recently built a modified version of the IR Pulse Sensor by Sean Ragan by combining it with elements from the original circuit, as designed by Let's Make Robots user MarkusB.

Read more on MAKE