Archive for date: December 6, 2011

More on $.99 Christmas lights…

December 6, 2011 | diy, electronics, Merry Christmas | By: Mark VandeWettering

I didn’t have a lot of time to do anything significant tonight, but I wanted to test a few things about this strand of Christmas lights using a multimeter and some simple math. Recap: there are two strands of LEDs, each wired in parallel. One strand consists of 4 red and 4 yellow LEDS. The […]

Upcoming Total Lunar Eclipse

December 6, 2011 | Amateur Science, Astronomy | By: Mark VandeWettering

Yep, there is an upcoming total lunar eclipse this Saturday, on the morning of Dec 10. It will be the last total lunar eclipse visible from San Francisco until April of 2014, so I think I’ll be trying to get up and see if I can view it and take some snapshots. From San Francisco, […]

“Sub Micro” R/C Blimp

December 6, 2011 | Link of the Day | By: Mark VandeWettering

I’ve been a fascinated observer of indoor model airplanes for years, so this little RC controlled blimp strikes me as one of the most awesome things I’ve seen in a while. It’s just a 10g payload, suspended by an ordinary 14″ balloon filled with helium. Very cool. MAKE | How-To: “Sub Micro” R/C Blimp

Correction: Schematic for $.99 Christmas Lights

December 6, 2011 | electronics | By: Mark VandeWettering

I was in a hurry yesterday, and didn’t draw the LED connections in my schematic for the $.99 Christmas lights properly. Mike pointed it out to me on twitter, so I thought I’d post a corrected version of the schematic. I’ve also updated the schematic in the original post, so no one will be led […]

A Blast from the Past: The Cinnamon Bear

December 6, 2011 | Merry Christmas | By: Mark VandeWettering

When I was a kid, my brother and I used to listen to old time radio shows quite a bit. During the Christmas season, KEX 1190 in Portland would play episodes of radio serial The Cinnamon Bear. The program was originally suppose to air six days a week starting just after Thanksgiving and culminating on […]