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Monthly Archives: March 2011
Laptop of Doom
My nephew dropped his Toshiba laptop X number of times, X being a number larger than the number of times that you should drop a laptop. Anyhow, the screen started flickering whenever he tilted it, and then it blacked out … Continue reading
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Autofade with Fritzing (A review)
From Fritzing.org: Fritzing is essentially an Electronic Design Automation software with a low entry barrier, suited for the needs of designers and artists. It uses the metaphor of the breadboard, so that it is easy to transfer your hardware sketch … Continue reading
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Tagged autofade, autofade lamp, breadboard, design, diy, electronics, fritzing, fritzing.org, prototype
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Autofade Lamp Test Circuit Upgrade
On Saturday, I reported that I didn’t have enough current gain in my autofade lamp test circuit to get a flashlight lamp to glow. The solution was to insert a second transistor, so that the circuit looks like this now: … Continue reading
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Tagged autofade, autofade lamp, diy, do it yourself, electronics
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Upgrading Autofade Lamp Test Circuit
Well, today was kind of discouraging. Here’s the new autofade lamp test circuit, upgraded: And here’s the key: A: I replaced the red LED with a flashlight lamp. The soldering operation was successful and the light is bright enough. B: … Continue reading
Upgrading Autofade Lamp Prototype
Okay, now it’s time to upgrade the autofade lamp from test circuit to product prototype. And so today was a shopping day. First, I want to swap the 1000uF capacitor with a 3300uF to make the fade last longer. Next, … Continue reading
Autofade Table Lamp on Youtube
Here’s the autofade table lamp video that I posted to Youtube. Values of the capacitor and resistors are subject to tweaking, of course.
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Tagged autofade table lamp, diy, do it yourself, electronics, hobby, lamp, lamps, product concept, product design, sketchup
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Autofade Table Lamp Test Circuit
So, as you recall from my previous entry, I wanted to build an autofade table lamp based on this circuit diagram: This is how the test circuit looks in reality (the hand, by the way, is my nephew’s): (Note that … Continue reading
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Tagged autofade table lamp, diy, electronics, lamp design, product design
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Autofade Table Lamp
Years ago, my car had an interior light that would come on when the door was opened, then slowly fade away when the door was closed. I now need something like that for my apartment. The light switch next to … Continue reading
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Tagged do it yourself, electronics, product design, sketchup, table lamp
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Engineer Zero 