2015年8月16日 星期日

Diy MC68000 Single-board computer



MC68000 16 bits RISC CPU single board
RAM CY7C137 dual-port RAM
MC68230 I/O controller
MC6850 ACIA
MC14411 bit rate generator


bottom view



2015年8月2日 星期日

Diy 3-way horn speaker

Diy 3-way horn speaker

New design 3-ways speaker box ...front view.


Speaker box rear view... woofer with L-load design.


Mid horn is JBL 2380 Flat front Bi-radial horn.

Woofer import from Thailand.
P-Audio 15BM-300B.

About 300W 97db Fs:48hz Vas:123lt

Mid Altec 288B


Tweeter Jensen RP-302

Amplifier test.







2015年7月24日 星期五

Mid driver clean Diaphragm

Altec 290-4G & Altec 288B clean diaphragm 

Take off cover


Take off diaphragm and clean inner chamber

double check have any noise




2015年7月23日 星期四

Mouse auto testing machine


Mouse auto testing handle utility

Mouse spec. test setting utility


Mouse auto testing display

put mouse in test rack

Mouse move auto testing 

Mouse orbit test for RF protocol package issue

analysis result

Mouse on air test for power saving issue

Mouse test finish

Mouse auto test handle front view

Mouse auto test handle rear view

Mouse auto test handle cover up view

motors and drivers inside

Slave PLC controller

Keyboard auto test machine

Keyboard auto test system terminal. 


Keyboard type spec. setting utility.


Keyboard auto test handle utility

Keyboard testing display

Keyboard driver code record feature


Keyboard CAM location teach utility

Keyboard two-key testing feature





Real testing movie










2015年4月9日 星期四

3-Way3 Horn speaker 號角喇叭

3-Way3 Horn speaker 號角喇叭 95db
Woofer 15'' / Mid Altec compression driver /Tweeter ribbon speaker

Altec compression driver & Horn

DAC Tube pre-amplifier
E88CC , 6JM6 PSE Tube amplifier

走過咖啡店早年歲月

咖啡店從無到有... 從有到無... 歲月的流逝 ,剩下的祇有記憶.

從無到有--- 舊店設立.
從有到無--- 拔營....牧咖啡的咖啡人.....移址, 啡客...........的遷徙.

咖啡店=咖啡+音樂

咖啡=日式咖啡+美式咖啡
日式咖啡=日式單品+日式花式咖啡
美式咖啡=美式單品+美式花式咖啡
.........."請不要找茶".

音樂=古典音樂+真空管