Tindie

Name: TritiLED v2.2
SKU: 10365
Price: 12.00 USD
Availability: InStock
Rating: 4.81 (4 reviews)

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TritiLED v2.2

(4 Reviews)

Multi-year always-on LED replacements for gaseous tritium light sources

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Multi-year always-on LED replacements for gaseous tritium light sources

TritiLED These tiny lights shine clearly in the dark, glowing for approximately two and a half years on a single CR2032 battery. There are three operating modes, selectable with the pushbutton: a co…

TritiLED

These tiny lights shine clearly in the dark, glowing for approximately two and a half years on a single CR2032 battery.

There are three operating modes, selectable with the pushbutton: a continuously on mode, a fast blink, and a slow blink. They all use nearly the same power; with the blinking modes concentrating the energy into a brighter flash.

What are these for?

Tritium lights are cool. This is a known fact. However, they are expensive, potentially hazardous, and not suitable for a lot of applications. That's where the TritiLED comes into play; it's relatively low cost, safe (as long as you don't eat the battery) and easily attached to anywhere you need a permanent light with a magnet or some double sided foam-tape. I have them around my apartment marking off the corners of tables so I suffer less late-night bumps.

How does it work?

This entire project was built with efficiency as its main objective. The LED is chosen for ideal visual registration in low light, and the 60Hz pulse circuitry is configured to provide a regulated pulse that uses a minimum amount of power without any visible flickering.

The circuit is essentially a single shot boost regulator, being driven by a microcontroller to pulse at a specified rate. The driver MOSFET is opened for a single cycle before being released, resulting in a brief flow of current through the inductor, which stores energy. Once the MOSFET is closed the voltage across the inductor spikes, activating the LED and releasing the stored energy as light with very little electrical loss.

Assembly Instructions

Youtube Video

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Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (4.75)

Shipping: (4.75)

Communication: (4.75)

Alex | April 23, 2021

Nicely made unit!

It glows, it flashes, it flashes brighter! So far I have had this switched on for about a week and it is still glowing. Does what it says on the tin. Get one!

David | April 15, 2021

awesome little toy, useful too

It is hard to really sate the purpose of the TritiLED other than that they are cool. I bought a bunch on a whim, but have actually found them to have a practical uses. They make great marker lights for places where running power would be difficult, and the have been great to have during power outages. In the latter application, one doesn't really make enough light to read easily, but with several you can. Most of all just having something to give a little light in the darkness is comforting and you don't have to worry about running out the battery. I've had a couple for three years now, and they are still on the same battery, so I can confirm that.

Bret | Feb. 12, 2019

Great little light for my kids room

I wanted something special for my son to look at since he loves trinkets. This is a great little light and he's amazed that it will glow for 2+ years. Great build quality, and no issues.

Ned | Jan. 27, 2018

Neat little board

This a nice little coin cell light, and brighter than I expected. I'm curious to see how long it will last vs. the projected time. Good documentation on Hackaday too :)