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  • Joules to photons. Finally.

  • Ok, sorry about the clickbait title; who can resist the promise of LEDs? I promise a photo of a lit LED in this log, so you don't go home empty handed.  This log is a quick one to introduce an intriguing potential alternative to coin cells. I have...
  • Pt.1 Sensor Design and Prototyping

  • Full video on this subject (this is literally the script): https://www.youtube.com/watch?v=Psy6lRcdGtk Introduction Old houses, like my parents’ home, comes wired with simple electromechanical doorbells. They’re a simple electromagnet with a metal...
  • Hack Chat Transcript, Part 2

  • caladan12:39 PMI think it's C++ on CentOS 7 daniel valuch12:39 PMactually, guess what it was Rosy Schechter12:39 PMHere are the libraries for data analysis: https://root.cern/ daniel valuch12:40 PMwhat was the mean time between failures when LHC started...
  • HACKLET 97 – CAMERA PROJECTS

  • We last covered camera projects way back in Hacklet #11. A ton of camera projects have been added toHackaday.io since then. While the rest of the world is taking selfies, hackers, makers, and engineers have been coming up with new ways to hack their...
  • The Hard Part

  • As with all projects, there comes a point when you find you've exited your comfort zone, and this mysterious world of endless yet seemingly unachievable possibilities lies before you, leaving you with the choice of trudging forward magnificently...
  • Program Modifications v1.04

  • To aide in testing of different setups/toys and claws themselves, the following features would be nice to have in the program:1.   Use pwm to start off closing of claw slowly and go to full current after a predetermined amount of time.  (Fade...
  • more locations

  • Saw some improvement in power when I moved the panels out from the house. This location is not setting well with the wife.. She has a spot back by the barn. I have a temporary cable run to an old generator power connection I put in some time ago. 0 guage...
  • Pi Supply added

  • Just a small project log to say that I've installed a Pi Supply on my Raspberry Pi in order to bring ATX-style power supply to it. The Pi Supply website gives a script to run on the Raspberry Pi to detect a button press from the Pi Supply and halt...
  • [06-08-2014] New interface

  • Recently made a few adjustment to the web-app interface (see pictures).I added a dropdown menu, and added a few new functions like:-Real-time weather information-Information tab that shows if anybody is home or not, car presence etc.-System maintenance,...
  • Parts Starting to Arrive

  • I received some of the parts today, including the Cubieboard 2 (wow, that was fast. Just ordered it Friday), adafruit smart power switch, the SATA caddy, and 6" HDMI cable.I started playing around with layout and realized for optimal positioning, I need...
  • Stage 1: Power

  • Well, you have to start somewhere. In this case I had to decide on a power level, and the ammo.. and just started calculating from there.1/2" ball bearing ammo160JSome caps scavenged from dumpster: 560uF 450VInternet sourced efficiency expectation: 6%24...
  • Thermal Performance Testing, Part 1

  • Ha! This project isn't dead! Just resting. I finally got started on thermal performance testing. To review: Using the larger (9") props seems to give me adequate thrust, but the motors heat up a bit too quickly. I went on a severe tangent designing and...
  • More details

  • The ceremony control box:The candle in this case is 3 feet high and 12 inches wide on top of a 3 foot stone pedestal, located about 15 feet beyond the ceremony space. The pedestal is made of insulation foam, cut and screwed together, with decorative...
  • Redesign Progress

  • I've been working on making changes to Goliath.  As I discussed previously I had suspected the need for a one-way bearing to prevent slack from occurring during a shut down.Helicopters use one-way clutches to allow for auto-rotation after an engine...