Tektronix DPO71254B Repair
There is a DPO71254B at my workplace that has been abandoned for quite a while. I repaired it so that we can use it to debug (no cal though)
writeup
Roland D-50 Repair
The long journey of restoring a Roland D-50
Oscilloscope Measurement Artifacts 1
In this article I present some aspects that distort electrical signal measurement result, with focus on what happens in the scope itself after the signal has entered an oscilloscope.
Building a NAS with a Cursed Motherboard / 用灵车主板组装一台NAS
I built a NAS with a cursed motherboard and TrueNAS Scale
Sharp GF-777 Restoration 夏普GF-777翻新
I restored a Sharp GF-777, replacing all belts and friction wheels, and the pinch roller
80dB Noise Preamp
A very high gain (80db or x10000) differential AC signal amplifier
Alesis M1 Active MK2 Repair 维修记录
Repairing a pair of classic Alesis monitor speakers 维修一对经典的Alesis监听音箱
Roland XP-80 Repair 罗兰XP-80合成器维修
A Roland XP-80 synthesizer repair writeup
Battery Powered Phantom Power Supply 电池供电的幻象电源供应器设计
A 3x AA battery powered phantom power supply design
How to Start a WordPress Site 如何建立一个WordPress站点
This post shows how to start a new Wordpress site with Ubuntu, Nginx, PHP, MariaDB/MySQL which is the LNMP stack. It assumes you have basic knowledge of how to use command line Linux.