Tag Archives: LED

555 timer teardown (and a Retrovoltage drum trigger project)

Posted on February 23, 2016 by jwk

Ken Shirriff’s blog has a fantastic and detailed teardown of a 555 timer, the ubiquitous decades-old timer circuit that turns up in so many places: If you’ve played around with electronic circuits, you probably know the 555 timer integrated circuit, … Continue reading →

Posted in Collections, Commentary, DIY, Gadgets | Tagged , , , , , , | 1 Comment

Retrofitting Light Fixtures with New, High Efficiency LED Bulbs

Posted on November 27, 2015 by jwk

I posted a while back about LED filament bulbs that use the new silicon-on-glass manufacturing process to produce Edison bulbs with thin strips of LEDs. Perfect for where you want that vintage styling of an incandescent bulb without all the … Continue reading →

Posted in Commentary, Gadgets | Tagged , , , , , , , , , | 3 Comments

Fixing a Dumpster Laptop – Dell Inspiron 1545 with Broken LCD Screen [Step by Step Repair]

Posted on June 22, 2012 by jwk

My apartment has what I like to affectionately call the “free pile”, where neighbors leave things they were throwing out but might have too much value to throw in the compactor outright. I’ve left a few things there myself, and … Continue reading →

Posted in DIY, Electronics, Projects | Tagged , , , , , , , , , , , , , , , , , , , , , , | 4 Comments