A few months ago we started a private PCB website so our team can get cheap PCBs from a fab in China. Someone spilled the beans, and it hit Hack a Day, Hacker News, etc. We almost shut it down, but it was too much fun to hack and refine the process. Dirty Tuesday is […]
Tag Archives: statistics
Free PCB Sunday statistics – when will you get one?
A happy winner of this Sunday’s Free PCB giveaway suggests there is a 50% chance of winning a PCB after 25 weeks: Thanks a lot! Just for the statistics: it took 13 drawings to get this code, which is way below average (there seem to be, on average, 110 comments on each sunday, which means […]
Key less entry system using Ping))) and the Arduino
Mouser built a key-less entry system using Ping))) and the Arduino. The Ping))) ultrasonic sensor is used to gauge user’s hand positions. By moving the hand at different positions, a code is entered that opens the door. He used the moving average filter to keep the system from taking measurements while the hand was in motion. Source code, schematic diagram, as […]