I’ve looked and been unsuccessful in finding household nightlights that meet my criteria: auto on/off dimmable 1800K CCT decent CRI uniform illumination no flickering power efficient The closest I found was this nightlight. I like everything about it except the 3000K CCT. I believe it’s a bit too cool for a nightlight. I ended up swapping the 3000K LEDs for 2200K LEDs. I would have preferred 1800K, but was unable to source them on Digikey. ...
I use Neewer’s hot shoe LED lights for a variety of purposes - photography, video, and scanning negatives. The CN-160 is incredibly bright and dimmable. Unfortunately, it is designed to take 6xAA batteries. Or, if you have the right camera, you can attach your camera’s lithium battery to it. I don’t like either option. I use 18650 batteries for my headlight and I want to use them here. I added a voltage monitor so I didn’t accidentally drain the batteries. I added a DC barrel jack for connecting to a wall adapter. This was for scanning thousands of negatives - I needed full brightness for many hours. ...
This how-to concerns making an adapter to hold a flashlight on a standard gopro mount. It allows you to mount a flashlight to a helmet or anywhere else you’d need a securely mounted flashlight. There are a few 3D-printed gopro flashlight holders on thingiverse.com, but they all seem to be either bulky or fragile and all require a screwdriver for installation and removal. My design uses a gopro mount, is secure, and forgiving to abuse. It uses velcro to accommodate many different flashlight and makes removing the flashlight very quick. ...
In the winter of 2013, LED strip lighting hit its tipping point - a big rise in popularity. A year beforehand, in 2012, I had an idea to build a controller for LED strip lighting. A sound reactive LED controller to make the lights get brighter on the bass notes. Biggest problem - I didn’t know how to make one. I finally started getting comfortable with electronics in 2014. ...
A stranger off eBay got me pulled over, from across the world. I have a 1983 Kawasaki CSR 305 that has a hint of a cafe racer. For the look, I replaced the stock brake and turn lights with a LED brake/turn light combo from eBay. It was manufactured overseas, very cheaply. typical cheap brake/turn light Something failed and the lights went out…at night…while riding. This upset the local authorities. ...
Trying to figure out which power supply, transformer, or wire gauge you need for a LED strip project? Look no further. The tables below show the current and power draw for RGB LED strips in both Metric and Imperial units. Metric Type LEDs per meter LEDs per segment Segment Length Segments per meter Current per meter Current per segment Power per meter Power per segment RGB - One Color On 30 3 10 cm 10 0.2 A 20 mA 2.4 W 0.24 W RGB - All Colors On 30 3 10 cm 10 0.6 A 60 mA 7.2 W 0.72 W RGB - One Color On 60 3 5 cm 20 0.4 A 20 mA 4.8 W 0.24 W RGB - All Colors On 60 3 5 cm 20 1.2 A 60 mA 14.4 W 0.72 W Imperial Type LEDs per foot LEDs per segment Segment Length Segments per foot Current per foot Current per segment Power per foot Power per segment RGB - One Color On 9 3 3.94 in 3 60 mA 20 mA 0.73 W 0.24 W RGB - All Colors On 9 3 3.94 in 3 180 mA 60 mA 2.2 W 0.72 W RGB - One Color On 18 3 1.97 in 6 120 mA 20 mA 1.46 W 0.24 W RGB - All Colors On 18 3 1.97 in 6 360 mA 60 mA 4.4 W 0.72 W Notice any errors? Comment below. ...