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
hardware
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