Pulse Sensor Amped is a greatly improved version of the original Pulse Sensor, a plug-and-play heart-rate sensor for Arduino and Arduino compatibles. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart-rate data into their projects. Pulse Sensor Amped adds amplification and noise cancellation circuitry to the hardware. It's noticeably faster and easier to get...

Connect this to that without soldering using these handy mini alligator clip test leads. 15" cables with alligator clip on each end, color coded. You get 12 pieces in 6 colors. Strong and grippy, these always come in handy! We often use these in conjunction with a multimeter so we don't have to hold the probes in place. Compared to our Large alligator clip set, these clips are smaller and 'pointier' 12 piece set, color coded...

Measuring stretch forces isn't easy - unless you have some conductive rubber cord! This cord is 2mm diameter, and 1 meter long, made of carbon-black impregnated rubber. Usually this material is used for EMF gasketing, but its also very fun to play with. In a 'relaxed' state, the resistance is about 350 ohms per inch. As you pull on it, the resistance increases (the particles get further apart). As you stretch it out, the resistance...

This tiny coin cell battery holder is ideal for small portable or wearable projects. It holds two 20mm coin cells (2032 are the most popular size) in series to generate 6V nominal. (If you want only 3V, we suggest sticking a crumpled piece of tin foil in one of the slots.) 20mm coin cells are popular as they are used in keychain lights, so they are easy to get, and fairly low cost. They tend to have about 220mAh capacity so this holder would...

This battery holder is by far the easiest way to add a battery to a small wearable project. By coincidence, there are two small 1mm diameter holes in the metal connection tabs, just large enough for a #5 or smaller needle to pass through. One tab connects to common ground (negative) and the other tab is +3 Volts. This holder is meant to be used with Lithium CR2032 (20mm diameter, 3.2mm thick) sized coin batteries. These are almost always 3V at...

Squeeze once to turn on, squeeze again to turn off! This clicky switch makes a great power switch or mode toggler. We like this switch because it's easy to embed in a seam for easily powering up/off wearable and fabric projects. Can handle up to 14V and 2 Amps! This is a really satisfying switch. As of May 20th, the dimensions of this switch are: Length of wires: 190mm / 7.5"Dimensions of body: 16mm x 15mm x 6mm / 0.6" x 0.6"...

This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes them ideal for use with 3.3V projects that have a 2-pin JST connector meant for one of our Li-Ion/Poly batteries. (Of course, you can't recharge them...

This skill badge is self-fulfilling! Normally you would get the badge after the project is done, but in this case, the badge can be part of the project! The solar panel is epoxied into a round disc 55mm diameter (about 2.2 inches), its rugged and looks cool besides. We include a sticky foam pin back you can attach to the back of the panel to mount it onto a backpack, jacket or sash. Of course, it also is a perfectly functional solar panel. There...

Connect this to that without soldering using these handy mini alligator clip test leads. Approximately 4.5" overall cables with alligator clip on each end, color coded. You get 12 pieces in 6 colors. Strong and grippy, these always come in handy! We often use these in conjunction with a multimeter so we don't have to hold the probes in place. Compared to our Large alligator clip set, these clips are smaller and 'pointier'. These...

We've got some awesome LED goggle tutorials, and now you want to make your own, right? So pick up a pair of NeoPixel rings and these costuming goggles and get to it! These goggles look a bit like aviator/welding goggle designs but are not for any sort of eye-protection! They are costume goggles only! You can wear them on top of your head or on your eyes but do not use for welding or flying or motorcycling, etc. The goggles are fully plastic...

The small 5mm size of these tin-plated brass snaps means they fit perfectly on Flora's pads! Snaps make a great connector for wearables-- solder one side to the board and sew the other to your project with conductive thread! This card comes with 24 complete snaps (socket and stud pairs). Some discoloration may occur during soldering. These snaps are washable, oxidation-resistant, and nonmagnetic.

These magnetic pin backs have two pieces: a metal bar with adhesive strip and a plastic piece with two strong rare-earth magnets. Affix the metal bar to your FLORA projects-- it's just the right size! Then attach your FLORA project to any garment without poking holes in your clothes. The magnets are strong enough to hold up even a hefty circuit! We recommend against soldering/brazing/welding to any part of the magnetic pin back, as the...

Mighty needles, sew like the wind! This needle set is the only one you'll need for any sort of hand sewing, especially using our conductive thread and wearable electronics parts. Each pack contains 20 gold-eye sharps, with eye sizes ranging from #3 (1.75" long) to #9 (1.35" long). The two #3's (the largest) are too large to pass through the sewable coin cell holder but otherwise are easy to use and thread. The four #9's...

Simple but effective - this sewable breakout board has a CR2032 coin cell battery holder soldered on and 0.1" pitch breakout pins for easy connecting. Great for powering very low-current projects, or adding a battery backup circuit to a real-time-clock or similar. Comes with one fully assembled and tested coin cell battery holder and a small stick of 0.1" header so you can solder it on and plug into a breadboard. Coin cell battery is...

Simple but effective - this sewable breakout board has a CR2032 coin cell battery holder soldered on, an on/off switch and 0.1" pitch breakout pins for easy connecting. Great for powering very low-current projects, or adding a battery backup circuit to a real-time-clock or similar. There's two ground pins, one 'switched' power pin, and one pin that is always on. Comes with one fully assembled and tested breakout plus a small...

Connect this to that without soldering using these mini alligator clip test leads. 15" cables with alligator clip on each end in six colors. Strong and grippy, these always come in handy! We often use these in conjunction with a multimeter, so we don't have to hold the probes in place, or with wearable projects, or for quick prototyping with big-pad circuit boards like microbit & Circuit Playground. Compared to our large alligator...

Connect this to that without soldering using these small alligator clip test leads. 18" long cables with color-coded alligator clips on both ends. You get 6 pieces in 6 unique colors. Strong and grippy, these always come in handy! We often use these in conjunction with a multimeter so we don't have to hold the probes in place.  Compared to our large alligator clip set, these clips are smaller and 'pointier' 6 piece...

This little Silver-color Pin with Foam Adhesive is the perfect way to attach any PCB or small component to cloth material.  The adhesive forms a solid but not permanent bond for a strong reliable hold. The pin also has a handy little locking mechanism to keep the pin from unlatching from friction. If you are working with wearables be sure to keep a handful of these around - they pair especially well with the Flora, Gemma, and Circuit...

This product's about as simple as a cup of lemonade on a hot summer day.  And, like lemonade, it's just three components! This board is a sewable adapter with a 3-pin JST wiring adapter.  It's a perfect way to add a simple link between things like our Flora NeoPixels and more complicated products like our NeoPixel Rings.  There are three holes on the board that are perfect for conductive thread (or soldering if...

A wristband that teaches you how to use technology for activism! Our black RESIST bracelet has a hidden USB storage drive (64MB) and comes loaded with a copy of the ultimate guide to modern tech-resistance, How to Be A Digital Revolutionary . Use the wristband to store and trade files; the book suggests what to load it with, like emergency contacts, your lawyer's phone number, ACLU "know your rights" guides, maps of a march or...

Face the future with handy illumination. We're proud to carry the first hardware accessory for the Google Glass! Why stick with plain old face-wearable technology when you could accessorize? Flashlight for Glass is a voice-controlled Glass-mounted flashlight. After installing the XE16-compatible APK program you can control your Flashlight at any time by saying "OK Glass Toggle Flashlight". Tested with the latest 17.2 OS. Requires...