Part one and Part two of Hackerspace Pumping Station: One taking on the Scion challenge are up and ready for your viewing pleasure. The team at Pumping Station: One built a Tron themed bicycle that when setup properly, would churn ice cream that turned your urine neon in about 6 minutes by using dry ice and ethyl alcohol. Besides sounding not so tasty, and having a multitude of problems along the way, the project turned out the be a success. The question becomes, does it stand up to the last Hackerspace, NYC Resistor, who made a drink mixing slot machine? And how will both fair against the up and coming Musical Building by Crash Space?
[Fred Keller] and [Judy Foster], both retired, are proving that age is just a number. What you see above is a nostalgia inducing full size driveable Radio Flyer red wagon. The base of which is a 1976 Mazda pickup truck, while the wagon portion is a mishmash of wood, fiberglass and bondo, detergent bottles, and more. Even the steering wheel has been retrofitted from an actual wheel from a wagon. We were surprised to find out the entire conversion only took the two 11 months to complete (finishing this past august), and even more confounded to learn the vehicle is completely street legal.
Oh [Humberto], what will you think up next? A human Theremin you say, and it’s for Halloween? Certanly this will blow last years creepy capacitance sensing jack-o-lantern out of the water right? Eh, not really, but still cool none-the-less. By using pairs of IR LEDs and IR photo-transistors, [Humberto] makes a simplistic distance sensor. Then its just a matter of converting that light value into sound, which is accomplished by using some very clever PWM square wave hacking to make a triangle wave. Also, [Humberto] goes over the process of using fast integers to represent slow floating point numbers. While none of the project is really a new concept, it certainly is put into an easy perspective so anyone can try their hand at it. All well worth the read, or you can catch a video after the jump.
Continue reading “Human Theremin, one step closer to cyborgs (not really)”
Why bother interconnecting 40 Propeller microcontrollers one on top of the other? For the power that comes from parallel processing of course! [Humanoido] put the setup together for a total of 1280 ports, 640 counters, and more all running at 6.4 billion instructions per second for the low low price of 300-500$ by our count. The “skyscraper” even comes complete with software and schematics, promising developers the ability to expand or adapt for any venture. Why would we need such a setup in the first place? For any of the following: vision tracking/modification, artificial intelligence, advanced robotic control, or more.
Related: [Humanoido] loves putting MCUs together, check out one of his other creations the Basic Stamp supercomputer.
Here we are with Episodes two and three (aka, NYC Resistor part one and two) completing the Take on the Machine Hackerspace challenge we mentioned a while back. For the challenge NYC Resistor took an old style slot machine and converted it into a drink mixing deviant; even making the device post a Tweet for every drink. However, it seems to be lacking refrigeration of some kind, could this be the downfall of a potential winner for the challenge? Up next is the Hackerspace Pumping Station: One: do you think they can compete? Is there a particular Hackerspace you can’t wait to see? Let us know!
[Matt] has mixed up a batch of two RFID reading door lock systems. While the “door lock” part of the setup has yet to come into existence, the “RFID reading” section is up and running. By using the Parallax RFID readers (for cheap, remember?) and an Arduino, [Matt] is able to parse an RFID tag, look its number up in a database, and then have a computer announce “Access Denied” in a creamy “Douglas Adam’s sliding door of Hitchiker’s Guide” kind of way with Python.
Good books aside, catch a not as exciting as you’re thinking video after the jump.
Continue reading “Arduino, RFID, and you”
[Greg] sent in his biometric pistol safe lock. He keeps his guide light on details so not every Joe can crack the system (there is a thread to sift through if you really wanted to), but the idea runs fairly simple anyway. [Greg] took an old garage door opening fingerprint scanner and wired it into a half broken keypad based pistol safe. While he did have some issues finding a signal that only fired when the correct fingerprint is scanned, a little magic with a CMOS HEX inverter fixed that problem quick.
This does bring one question to our minds, are fingerprint scanners as easy to crack as fingerprint readers?