Popular Science did a nice write up on this project from Sean Hodgins. It’s a great example of how a Peltier module works.
Sean Hodgins enjoys ring smithing, a hobby he adopted from his grandpa, and loves building small electronic gadgets. So he combined his passions to make a ring that turns body heat into light. Hodgins milled a two-finger band out of aluminum—an excellent thermal conductor—to cradle a 6-millimeter by 3-millimeter Peltier module and custom circuit board. The Peltier module converts heat flowing from the ring into a small voltage, and the circuit board amplifies the current. For now, cold weather best illuminates an LED on the ring, but Hodgins is designing a new circuit to make it blink brightly at any temperature.
Approximate time: 150+ hours
Cost: $200 to $250
Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Presentation: Ten Year Futures – Benedict Evans
Wearables — Toy with inspiration
Electronics — Servo Pulses
Biohacking — Nutrigenomics – Personalized Vitamin Supplements Based on DNA
No comments yet.
Sorry, the comment form is closed at this time.