Do to yet another members recent issue with paypal we have enabled bitcoin payments. Now once you login to lazer.hive13.org you have an option to pay through Mt. Gox with bitcoin. This works similar to the paypal button but the prices are dynamically set to equal the $30/hr charge we use for paypal. After a payment it may take a while for the laser minutes to show up, at least until we can have the callbacks fully tested.
With paypal locking accounts and Dwolla’s new crazy terms of service, we would love to offer bitcoin for membership subscriptions as well but unfortunately I don’t believe there is any good way to do this without paying an escrow upfront. Until then we will use the laser site as our first official testbed.
We upgraded our electrical system in the hive now so we can run all of our tools without blowing a fuse! While we were at it we ran dedicated lines to each of the AC units… all 6 brand new AC Units!!! That’s right, this summer the Hive will actually be a nice area to work instead of a sweat box.
Our electrician was fantastic and if you are ever looking for a team to quickly do an amazing job and not gouge you, then please hit up our friend Marcus:
Last week, Hive13 member Rick showed off a rather impressive project: An electric motorcycle he’s building. He started it near the end of 2011, inspired by his father who started building an electric car years back but due to funding issues could not complete it. A lot of online resources helped greatly by providing information on what people had tried, what worked, what did not, what parts they were using, and so on. (Did I really need to mention that part? This is a blog for a hackerspace.)
Whatever its stage of completion, he says he has about 100+ miles on it so far and it can do 54 mph. (Update: This doesn’t mean the bike has a range of 100+ miles, but that he has ridden about 100+ miles on it so far. Actual range is more like 20 miles. Sorry, Hackaday.)
The frame of the bike is a 1989 Honda VTR 250 he had around for spare parts for other bikes. To replace the Honda’s 24 HP gas motor, he used a common golf cart permanent magnet DC motor, 24 V – 72 V, driving it with a fairly standard 48 V electric controller. Four Optima Deep Cycle Yellow Top 12V batteries power it (two of them are visible in the top photo), and he added a 48 V charger to manage them. (Update: Batteries are AGM [Absorbed Glass Mat], not lead acid, for the record.)
Headlights, taillights, turn signals, and other accessories run from 12 V that a DC-DC converter provides. (I think this also included the ridiculously loud horn, strictly for safety reasons because the bike makes practically no noise otherwise. He says he’s only had to use it twice so far…)
Rick estimated the total cost at about $2800, and that was using mostly new parts with warranties rather than used ones from Ebay. In addition to this, he purposely built it with a removable battery rack if we wishes to swap in a different battery type later on – he mentions LiFeMnPO4 batteries and a new controller & charger that would have added $1500 to the price, but would have increased the bike’s range and reduced its weight. (He put its current weight at about 400 lb total.)
Actual problems seemed pretty minimal. He made a mistake in the math when choosing the motor’s drive sprocket; a recent change in this brought the top speed from 35 up to 54 mph. The website from which he bought the battery charger advertised it as weatherproof, and he discovered it was not. He has some concerns about the motor getting too hot on hills or longer runs, and intends to add a temperature gauge and a fan.
I also felt I had to ask a token stupid question, “What is it like to ride a motorcycle where you can’t rev the engine?” but received a fairly serious answer: “It’s weird not having a gas motor. The rev thing isn’t as weird as not having any kind of engine brake when you’re going down hills.”
The Flickr album of pictures is here (first 5 are courtesy of Dave Myers; remainder are my own until the last 5, which are Rick’s). Rick also provided some photos and videos of the initial tear-down, assembly, and first rides:
(Disclaimer: Neither Hive13 nor Rick advocates riding without protective gear. The only reason this is absent in the pictures is that these were very short test runs.)
The event is at 7pm on Friday, May 4th, at the Hive13 Hacker Space, located at 2929 Spring Grove Avenue. Details about the space, including directions and contact information can be had here: http://www.hive13.org/?page_id=308
On May 4th Hive13 together with 2600 will take part in International Day Against DRM. On May 4th you are encouraged to spread word about the harms of DRM. On Friday we will discuss how harmful DRM is as well as give demonstrations on how to liberate some of your digital goods from the DRM shackles. We plan to focus primarily on ebooks just to keep the demos reasonably small. If you have any experience with removing certain types of ebook protections please bring any tools or techniques with you for open discussion. At this time we already have some volunteers that will demonstrate the remove of DRM for Adobe’s DRM plus I personally have a collection of scripts for: Mobipocket (.prc/.mobi), Kindle Mobipocket (.azw), Kindle Topaz (.tpz/.azw1), Kindle Print Replica (.azw4), Adobe ePub (.epub), Adobe PDF (.pdf), B&N ePub (.epub), B&N/Fictionwise eReader (.pdb).
With the recent kickoff of the Cincinnati MeshNet project, I thought I would give a presentation on wireless mesh networks and some of the technologies behind them. If you have something that you would like to present, or a demo you would like to give, please feel free to come by.
We will be meeting at the Hive13 hacker space in Camp Washington, 2929 Spring Grove Ave at 7pm. Maps and other details about the location can be found here. See you there!
Hot off the presses! Er, well, laser cutter! We bring you the new pinning tray. This tray is more portable than before. The other one was small but the square shape often made it hard to fit into some carrying cases with your other tools. This new design by Brian keeps the tray small but adds length to better go with the tools you normally carry.
And that’s not all! With this new design you can use the holes on the side and a lid to secure your pins for further storage. By placing a lid on top and using some small screws you can fasten the lid down and store the pins for later use. This is ideal if you are working on a progressive lock and need a place to store your the extra pins until you work your way up. It can also be used to keep some extra security pins grouped together or potentially for storing the pins from control locks used in lock forensics.
We are still testing out the design but once we finalize it we will have some available if anybody wants one.
This will be the reboot for the Cincinnati Perl Mongers group. We can use the projector to share a few short presentations if anyone would like to present. I plan to do some beginner level stuff about what ‘use warnings, use strict, my, etc’ are for. Would be nice if someone talked about CPAN, favorite modules, arrays, hashes, etc. Also, informal talking about what we are using Perl for, cool technologies, etc.
There is a mailing list setup now so please subscribe if you might be interested in attending at some point. Depending on the turnout for the Wednesday group can try other nights too. Nothing is set in stone at this point. If monthly meetings are too much can set it up for every other month or quarterly.
Hive13 contains a variety of exciting things to create prototypes from. Learn to mold and cast these prototypes and more using hobby-grade resins and silicone. The class is $40 and includes a take-home pint of slow-cure casting resin. Due to time constraints, molding will only be demonstrate (it takes 4-6 hours for the mold to cure), but we will cast real resin things that you can take home from pre-existing molds (what things is to be determined).
The class will be held from 7:00 p.m. – 10 p.m. Wednesday, February 22. Cut-off date for sign-up is February 17.
Hive13 aims to create a place where a diverse community of makers can collaborate and pursue creative projects. Hive13 promotes science & technology education, open source values, and skill sharing amongst it’s members and the community.