LED Flashlight

by rstephen4048, published

LED Flashlight by rstephen4048 Feb 26, 2013
1 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag


Thing Statistics

2043Views 708Downloads Found in Electronics


Here is an LED flashlite that you can build several ways. It has a top, body and a cover for the battery(s). There are two top files – one for a 5mm LED and one for an 8mm LED. The body has a hole for a sub-mini slide switch and a fitted opening for a 9V battery snap. The battery cover stays on by friction. There are 2 cover files – one for a 9V batt and one for 2-AAs. You will need: a high quality, hard plastic T-type battery snap with wires, a back-to-back 2 AA battery holder, an LED, a resistor, and a sub-miniature slide switch like (Jameson No. 621325).


  1. Install the battery snap. The snap will fit very snug so you will have to sand the ends of the snap a little to get it in. Even though it is very tight, I would still super glue it in place.
  2. Wire the switch. Keep all wires/leads as short as possible. Position the switch, tape it in place and drop a dab of hot glue on the back of the switch (inside the body).
  3. Install the LED. It also fits tight so use a round file to enlarge the hole just a tad. Put it in and super glue.
  4. Wire it. Cut the LED leads and solder the resistor, the ground and the hot wire from switch. I usually do it in that order.
  5. Push everything together, check for function (shorts) and then glue the top on.
    Notes: My 8mm LEDs have a forward voltage of 3.2-3.4 volts at 25 MA but they still work on 2 AAs, they’re just not as bright. For a 9V batt and the 8mm’s I use a 200 Ohm resistor. For 9V and a 5mm, use a 470 ohm. For 2-AA batts you can use a 10 Ohm or less for either size LED.

More from Electronics

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App