[Laurens Tromp] stumbled upon this LED lamp project while looking for a datasheet. The lamp has two heads with 252 LEDs each. The individual heads have equal number of red, blue, green, yellow and white LEDs. At the base of the lamp is a touch pad that has a virtual slider for each individual color’s intensity. The heads can be controlled separately or together. The lamp can also be operated over ethernet since its controller is a RabbitCore RCM2200. The only answer I can’t seem to find in the extensive documentation is how much this milled aluminum monstrosity weighs: 110 pounds.

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The Cisco Unified IP Phone 7960G is becoming fairly common in corporate environments. The phone has a built in XML browser for navigating menus. [Nick] decided to hack together a PHP application that will let the phone display email messages in a POP3 account. In its current form it works with most text-only messages, but limited filtering means it could fail on some.

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Humans exhale a lot of oxygen along with their waste carbon dioxide. Instead of throwing out this oxygen, a rebreather uses a scrubber to remove the CO2 and replace it with pure oxygen from a bottle. Tom Rose built this rebreather for $100. When you exhale air passes through the scrubbing material and is stored in hot water bottle counterlung until you inhale. The system is only 15 pounds; a great savings compared to most dive equipment. You are definitely putting your life in your own hands so this should not be used without plenty of “couch-diving” tests. Tom has a ton of other diving related projects on his site.

[via Divester]

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Hack-A-Day reader [Mindaugasu] built this box for exposing copper boards to ultraviolet light before etching them. It has two banks of four 20W UV lamps. The box is lined with reflective foil. The banks can be controlled separately and the exposure time is set by an Atmel AT90. You can change the time using button panel and LCD. He’s got some example boards in his ARM development section.

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I use the qualifier “commercial-grade” here because this TIG welder project goes far beyond our junkyard TIG welder. The welder has a 180 amp capacity and has most (if not all) of the features of a modern welder. Instead of using a microprocessor, Dave Barrett decided to use discrete TTL and CMOS logic. That decision should make the design a lot easier to troubleshoot. Schematics and board layouts are on his site.

[UPDATE: I forgot to thank demmion for the tip]

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MP3elf is a network attached MP3 player. It can stream MP3s from your hard drive or connect to internet radio stations. The design is BSD licenced so you can download all of the plans and build it yourself if you want. They’ve got kits available as well. The server portion is written in Java so it should run on your operating system of choice.

[thanks Default]

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