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Pointless Dingoo Mods

Posted 2010.04.22 9.44 in Computers/Internet/Technology

Last night I was a bit bored so I sat down and did some pointless hardware mods to my Dingoo.

First, I added a power LED. When the backlight is off, or if you boot it with the B button to go into flashing mode, it’s hard to know if the Dingoo is on or off. And in any event, I’m a sucker for LEDs. “Real electronics should glow in the dark.”

The easy part was attaching the LED, I used a surface mount blue LED that draws 10mA at 3.6v and stuck it near the start button, then wired it between Vcc and ground. I found a point on the rear of the board where the power is switched so I just ran a bit of 28 gauge wire around from the back to the front. The hard part was getting a hole in the black layer of the front case, without also going through the clear part of the front case. I used a cheap soldering iron to melt some of the plastic then some small precision chisels to cut out the plastic and get the hole to be just about right. Actually it was about 80% luck, I’m usually not this good at modifying the plastic parts.

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EeeTop – Part C

Posted 2009.05.28 16.03 in Pointless Blather

So, I got the graphics working right by using Ubuntu 9.04. I had increased the RAM and hard drive, and was looking to install Bluetooth.┬áBy now I’m getting bored of this story, so I’ll try and make this short.

I was thinking about tapping into one of the two unused ports on the GL850 USB hub chip. This is a 48-pin LQFP package, with 12 pins per side, and a pin-spacing of 1/2mm from pin to pin, with a gap of 1/5mm between pins. I have soldered directly to chips with pin-spacing this tight before, but it’s very, very difficult. And in this case, the risk of failure is losing the webcam, the SD card reader, and possibly wrecking the whole motherboard.

So I mulled it over for 2 days before it hit me – instead of tapping one of the unused ports on the GL850, just grab one of the existing USB ports. With 6 ports, there’s no way I’d use them all, or even half of them. I could just tap one and wire it internally rather than externally!

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