저렴한 자전거 블랙박스 모음

미니캠

http://www.aliexpress.com

에서 mini cam, spy cam으로 검색

후보 1 Mini DV 5.0

동영상 - http://www.youtube.com/watch?v=lmkbuz4vQ2g

판매 페이지 -  http://www.aliexpress.com/store/product/Free-Shipping-Mini-DV-5-0-Mega-Pixels-Camera-1280x960-High-Definition-Video-Cam-Webcam-function/210701_875599973.html

후보 2 Mini DV MD80 - 구매 완료! 적당한 화질에 싼 가격 괜찮은 구성품

동영상 - http://www.youtube.com/watch?v=dI72LL11Omg

판매 페이지 -  http://www.aliexpress.com/item/Free-shipping-Black-Sports-Video-Camera-MD80-Webcam-web-Cam-Hot-Selling-Mini-DVR-Camera-Mini/897926599.html

후보 3 y3000 - 화질 엄청 좋지만 베터리가 작아서 개조해야하고, 동영상 압축이 안되서 용량을 엄청 쳐먹음 42분에 5기가

동영상 - http://www.youtube.com/watch?v=CgtTg62GDfs

판매 페이지 -  http://www.ebay.co.uk/itm/NEW-Smallest-720P-Camcorder-Camera-Webcam-mini-Video-Recorder-DV-DVR-Y3000-/271044108488?clk_rvr_id=483414292327

후보 4 Mini DVR U8 USB DISK HD HIDDEN - 노출 과다

동영상 - http://www.youtube.com/watch?v=wLhF6E1BAao

판매 페이지 -  http://www.aliexpress.com/store/product/portable-cameras-Mini-HIDDEN-DV-DVR-U8-USB-DISK-HD-Camera-Cam-Motion-Detector-Hidden-Video/911360_590638107.html

후보 5 Car key Mini hidden Cam 제일 쌈 화질은 별로

동영상 - http://www.youtube.com/watch?v=pWU3ec4-p4c

판매 페이지 -  http://www.aliexpress.com/item/mini-dv-with-HD-video-808-car-key-Mini-hidden-Cam-Recorder-DVR-MICRO-CAMERA-DV/869372160.html

후보 6 Mini DV DVR camcorder vehicle DVR Hidden Sports Camera - 거치대포함, 방수

동영상 - http://www.youtube.com/watch?v=8o2P_mxRWiY

판매 페이지 -  http://www.aliexpress.com/store/product/Mini-DV-DVR-camcorder-vehicle-DVR-Hidden-Sports-Camera-All-Metal-Extreme-Sports-Action-Camera-bike/328318_909003249.html

판매 페이지 링크는 5월 중순 검색 당시 동일 제품 중 가장 싸고 무료 배송 해주는 링크임.

Nexus7 Ubuntu backlight brightness control

Nexus7 Ubuntu 13.04 backlight brightness control 

[System Settings] -> [Brightness & Lock] is not possible to adjust the brightness on.

Enter the terminal

sudo tee /sys/class/backlight/pwm-backlight/brightness 

or

echo 200 | sudo tee /sys/class/backlight/pwm-backlight/brightness

or

sudo /usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 200

If you enter 0 to 255 brightness changes.

(Max brightness can be seen with the command.
cat /sys/class/backlight/pwm-backlight/max_brightness
or
sudo /usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-max-brightness)

After the [System Settings] -> [Brightness & Lock] in the brightness can be adjusted.

However, after a reboot of 40 brightness changes....-_-;;;;