2016年8月29日 星期一
2016年1月27日 星期三
[DIY] Fix micro SD to USB
Micro USB have 8 pin.
I bough bumper socket for micro SD card.
Bumper socket have 9 pin. The bottom pin of bumper socket don’t use it.
Connect reset of pin to the pad of PCB.
2015年11月11日 星期三
[Maker] Make USB to serial converter
PL2303SA
PL-2303HX
The picture show us what is circuit about J2 and where to connect.
Searching more clear picture to assemble component.
1 mF (millifarad, one thousandth (10−3) of a farad) = 1000 μF = 1000000 nF
1 μF (microfarad, one millionth (10−6) of a farad) = 1000 nF = 1000000 pF
1 nF (nanofarad, one billionth (10−9) of a farad) = 1000 pF
1 pF (picofarad, one trillionth (10−12) of a farad)
Reference:
PL-2303HX
The picture show us what is circuit about J2 and where to connect.
Searching more clear picture to assemble component.
1 mF (millifarad, one thousandth (10−3) of a farad) = 1000 μF = 1000000 nF
1 μF (microfarad, one millionth (10−6) of a farad) = 1000 nF = 1000000 pF
1 nF (nanofarad, one billionth (10−9) of a farad) = 1000 pF
1 pF (picofarad, one trillionth (10−12) of a farad)
Reference:
2014年11月3日 星期一
[EAGLE PCB Design] Draw a line on the brd
Press Route button to draw a line between point to line.
After draw the line, the original line will disappear.
After draw the line, the original line will disappear.
[EAGLE PCB Design] Add resistor component into sch
Type “R-US” to search resistor.
Press Line button to draw a line.
Press junction button to let the line joint together.
[EAGLE PCB Design] Add 74HC595N component into sch
1. Press [add] button
1. Choose “74HC595N” and press OK.
1. Choose “74HC595N” and press OK.
[電子材料][PCB] 商品價錢
金電子 - 感光電路板
震鑫電子 - 45元
元捷電子 - 53元
金電子 - 35元
震鑫電子 - 鍍銀線 - 68元
震鑫電子 - 45元
元捷電子 - 53元
金電子 - 35元
震鑫電子 - 鍍銀線 - 68元
2014年10月20日 星期一
[DIY] Make a RS232 to UART
[DIY] Make a RS232 to UART
IC Specification - MAX3221CAE+
Reference :
1. 勝特力
2. MAX3232CPE Specification
3. MAX3232CPE Electronic Wiring
http://pdf1.alldatasheet.com/datasheet-pdf/view/73152/MAXIM/MAX3232CPE.html
2012年10月10日 星期三
[Power Supply] How to trigger Power Supply
[Power Supply] How to trigger Power Supply
My structure like below.
I use power supply to connect to my Hard Disk.
When everything is done.
I don't know how to trigger my power supply to supply the power.
My friend told me how to start the power supply.
Power supply have power line.
The power line must to trigger it.
So it can start to supply the power.
The method show on my pic like below.
On the pic have two line, one is black and another one is green.
Green line is fire line.
Black is connect to ground.
Let two line connect together by using steel line.
Then my power supply start to work.
Happy ^^
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