Tuesday, December 26, 2017
Sunday, January 15, 2017
Sunday, October 16, 2016
【Teardown】RC732 -DVR 7" LCD 5.8 GHZ (How to reset)
Green Led of RC732 -DVR always light and reboot faild today.
We have to reset because of sometime crash.
【DIY】AC 110 v to DC 5v transfer board with mobile phone charger
Saturday, June 25, 2016
How to control LED with Arduino and npn transistor (C1815)
The C1815 NPN transistor ,from left to right are the E (emitter), C(collector).B(base)

Sunday, May 15, 2016
【IOT】How to ESP8266 upload code with Arduino IDE (Example: Blink)
How to ESP8266 upload code with Arduino IDE
- Download the Arduino IDE.
- Go File --> Preferences and add the link http://arduino.esp8266.com/stable/package_esp8266com_index.json to the Additional Boards Manager URLS.
- Go to Tools --> Board --> Boards manager
- Install ESP8266
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