Ben Heck Interview Part 2

Here’s part 2 of my interview with Ben. (Or just grab it via the feed) We answer some more questions and go off on a few tangents about cnc machines, the PS3 and part sources. It cuts directly to the interview – I don’t want to wait 6 hours to record it. I should have a regular podcast up in the next day or two.

GP2X With Built In USB Host Port

gp2x usb host mode

Hacker [Sprite_tm] is one of our favorites. He continues to court our fancy with his latest hack, adding a USB host port to his GP2X. The GP2X is a Linux based handheld game system. It supports USB devices through its EXT port. Problem is: it doesn’t provide power and you have to use a dongle. The GP2X uses a MAX1566 DC-DC converter so Sprite_tm was able to get 5V from the chip that was otherwise unused. Once mounted in place all he needed to do was write a simple script to mount the USB device. The chip should provide 500mA, but it’s not guaranteed. High draw could lock up the GP2X so a powered hub should still be used if you are unsure.

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CCFL Backlight Replaced With White LEDs

jornada backlight

[Jeroen Domburg], one of our favorite hackers, has posted how to replace a cold cathode based backlight with white LEDs. He had recently purchased an HP Jornada 680 on eBay and the backlight was looking very pinkish. The Jornada has a QWERTY keyboard, CF slot, PCMCIA slot and can run Linux. Sounds like a pretty decent mini-terminal (now that we posted it you won’t be able to find one cheap though). In the space where the backlight was he was able to place 14 white LEDs. To get theĀ  40V necessary to drive the series he built a boost-converter using an ATTiny13. The new backlight is just as bright and uses a 1/3 less power than the original. Half the Jornada’s power was being used by the original backlight, so this mod should give a decent increase in battery life as well.

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