Bose QC15 headphone cable pinout schematic

I love my old Bose Quietcomfort 15 headphone, so much that I decide to add a Bluetooth receiver to it to keep it in service for a couple of more years. During the process, I needed to DIY a short audio cable to connect the headphone and the Bluetooth receiver. I couldn’t find any information about the pinout on the Internet, so I disassembled the original cable to find out the schematic.

QC 15 audio cable disassembled.
Continue reading “Bose QC15 headphone cable pinout schematic”

How to install Windows 98 SE on Thinkpad X41

Recently I wanted to play with one of my old PDAs, and its sync software requires a parallel port and Windows 98 environment. Virtual machine does not emulate the parallel port well. Because Thinkpad X41 is my oldest machine with a parallel port (on the dock), I tried to install Windows 98 SE on it.

It turns out X41 was too “new” for Windows 98. There are some driver issues that I can’t resolve. But for my purpose, the result is good enough. So I’m documenting the process here, hope it helps others.

Continue reading “How to install Windows 98 SE on Thinkpad X41”

Bluetooth Receiver TT-BR06 volume mod

Last year I bought a TaoTronics TT-BR06 Bluetooth Receiver to use with my iPhone. It works great, and the sound quality is fine. The only issue was that the volume was too loud. I am using it with a pair of Sony XBA-N3 earphone, it was uncomfortably loud even on the lowest volume.

Front of the product

Recently I looked up for this product on Amazon, and I found a review that mentions a modification that can adjust its output gain. I tried it and it worked like a charm. So I’m documenting this mod here. Maybe it also applies to other similar brands of Bluetooth receivers. So if you have similar problems, you can have a try.

Continue reading “Bluetooth Receiver TT-BR06 volume mod”

Sony CLIÉ PEG-SL10把玩


黑白、干电池、带扩展的palm是我的理想选择,主要是因为省电、电池没有老化问题,并且不受可怜的内存的限制。市面上的黑白电池机有很多,但是m125和SL10是仅有的两款带存储卡扩展的palm(其实还有TRGpro、Handera 330这些老怪兽,市面上基本见不到了,我也就不想了……)。m125在半年前入手一台,SL10则迟迟没有合适的。甚至想过让朋友在ebay帮忙代购,但也没有价廉物美的。近期在tompda上看到这个机型,毫不犹豫地就买了一台。

Continue reading “Sony CLIÉ PEG-SL10把玩”

Nokia 770从入手到精通(八)N770搜索不到wifi无线网络的问题解决

几个月前,我的N770忽然搜索不到wifi无线网络了。具体表现为:笔记本和ipod touch都可以搜索到并且连接到wifi,N770却搜索不到任何网络。我把N770拿到图书馆去,又可以搜索到wifi了,很奇怪的故障。

最近google了一下,在下面的网址发现了这个bug report。

Continue reading “Nokia 770从入手到精通(八)N770搜索不到wifi无线网络的问题解决”

Nokia 770从入手到精通(六)N770 的USB Host模式(下)软件篇

如果完全按照上一篇日志来的话,切换到usb host模式,插上线之后键盘就应该可以工作了,但是键位有点别扭,比如主回车键在xterm下居然不是回车,得按小键盘上的回车键才行。
USB键盘要玩rdesktop的话,需要在rdesktop的选项中勾上“BT keyboard”,进去以后键盘操作很爽~

Continue reading “Nokia 770从入手到精通(六)N770 的USB Host模式(下)软件篇”