An AtTiny will generate 1Hz clock pulses into a chain of 4017 counters that will tell the Nixie tubes which digit to display. I will display time in the hh:mm:ss format using 6 Nixie tubes running off rectified mains. I initially wanted to buy one, but a few Google searches quickly convinced me that building one is cheaper. It's looks like this (lots of Nixie tubes). Why Nixie tubes? Well, Okabe uses a 'Divergence Meter' in the anime to measure of how far he is from his original timeline. He must travel back to his original timeline to prevent that from happening.īecause of Steins Gate, I have decided to build my own Nixie tube clock. In Steins Gate, Okabe Rintarou accidentally time machines himself into a different timeline and learns that the earth in that timeline will eventually fall to dystopia. So my friend made me marathon watch Steins Gate (an anime) when I went home for spring break. 6.5' 7 Segment Display from SparkFun (x2).CD4511 BCD-to-7-Segment Decoder Driver (x2).Though I didn't finish this build, I'll probably try again (especially since the parts are waiting in a box somewhere in my closet). So I'll pat myself on the back for the guts to present and promise myself to allot more build time in the future. My guess is that they, like me, didn't finish. Except only 3 teams presented so technically I came in last, but hey, 4 other teams didn't even show up. According to one judge, I would've won if I had completed the build.

The presentation went better than expected. I made a tactical retreat to my dorm a few hours after the sun rose to get some shuteye before the presentation.

At this point of the night (or should I say early morning), I have my binary counters working just fine but have blown several decoders.

I made do in the end with an astable 555 outputting an approximately 1Hz clock signal. In a nutshell, we discussed how cardiovascular disease is the number-one killer in the United States and is largely preventable for many people, so long as they develop heart-friendly habits. I came up with the idea after speaking with my friend and the CEO of ShapeU, Seal-Bin Han. Avoid commercial prefab modules and boardsīasically, I wanted to build something cheap from discrete ICs that was Arduino-based and helped other people and/or the community in some way.The exercise timer makes an obnoxious noise if it reaches 0, and the only way to add time is to jump up and down on a platform. I want to first discuss the exercise timer I designed for the Johns Hopkins chapter of the Institute for Electronics and Electrical Engineers (IEEE) Arduino Competition. After a tough semester, I'm ready to pick up my blog again for the summer! For the time being, I plan to document the work I did during the semester that I didn't blog at the time because I was too busy doing problem sets and whatnot.

Lightwright 6 trial