Install web failsafe u-boot for WR703N

DO IT AT YOUR OWN RISK!

What is u-boot?

U-boot is a universal boot loader which starts when you plug in the power cable. It runs itself to check the board and make some initial configuration. After feeling everything’s right, it loads the main OS and start the system. More information can be found at: http://wiki.openwrt.org/doc/techref/bootloader/uboot

Which u-boot to install?

I don’t know what stock u-boot can do, but certainly not much. As a geek, sometimes it’s just easy to “soft brick” the router when I dig into configurations and settings: the hardware is good but the OS is out of connection or stop working. For WR703N (and some other TP-Link devices with AR9331 SOC) users, it lucky to have someone like misp to develop a web failsafe u-boot: http://code.google.com/p/wr703n-uboot-with-web-failsafe/ and some like pepe2k to modify and improve that up to a new level: https://forum.openwrt.org/viewtopic.php?id=43237. The latter one is the u-boot I recommend.

This u-boot allow you to flash new firmware, u-boot and art through web browsers (not only firefox) or other ways. More details can be found at the link above. I strongly recommend to read that before doing anything.

Continue reading Install web failsafe u-boot for WR703N

Moving Caption

I was playing Diablo 3 these days and I found it’s hard to read the name of the objects on the ground ’cause they are moving as I moving, so I wrote this small program to test my idea. (BTW, Diablo 3 sucks, not that big different from Diablo 2 and I’m wondering what is Blizzard doing in so many years…)

这两天我在玩暗黑3,然后我发现很难看清楚地上物品的名字因为他们跟着我一起在走,所以我写了这个小程序来验证一下我的想法(顺便说一句,暗黑3比暗黑2可能好一点点,但是花了那么多年啊,暴雪你在干什么。。。)

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DIY shutter release

This is a idea/plan that I want to do.

Lately I brought a Canon 60D, and it’s cable shutter release is using 2.5mm audio jack which is a quite common and cheap so I decide to make one or more cable shutter release/s.

From the tip to the cable, there’s three contact point. Normally there are Left | Right | GND, as using on the 60D, they defined as Shutter | Focus | GND.

Things to do:

1. Build a manual shutter release;

2. Using Arduino as a controller so time-lapse photography will be much easier.Done

So far for now, I’ll update when I make something new.

Update: After installed the MagicLantern firmware to my 60D, it got the intervalmeter function, so it no longer need a outer controller to do the clicking.

Warcraft III Resolution Changer

This is a simple little program that make the Blizzard Warcraft III to fit your current screen resolution. Will you can do this by using the regedit yourself to modify the key: “HKEY_CURRENT_USER\Software\Blizzard Entertainment\Warcraft III\Video\” but this tool is much easier.

The program is in Chinese and I don’t want to change it but you can still pretty easy to use it since you only need to push one button(with the [确定更改] sign) once. If you really wanna use other language, please download the source code here: https://github.com/zhujunsan/Warcraft-III-Resolution-Changer

The program itself is at HERE.

DIY External Power Pack

That’s the thing I made. I’ll edit this post with more detailed information later.

DIY External Power Pack_cost accounting

MeterialCountin CNYin USD(6.4:1)Comment
Box10.000.00from a box of Hershey's
Wire100.150.02
Glue stick30.900.14
Battery120.003.133.7v/3700mhA
protective circuit for battery13.800.59
Solar pannel16.801.064.5v/78mA
Schottky diode10.500.08ID 5819
booster circuit18.001.25pre-made, output 5V/500mA
LED10.100.02
Resister10.020.002.2k
USB mini port10.280.04
self-lock button10.330.057*7mm
capaciter30.060.011up
Battery Charger IC19.001.41MAX1555
bread board14.000.63
Total price53.948.43