My Wish List

  • PlayStation VR
  • Amazon Echo
  • Samsung SmartThings
  • A few more Raspberry Pi v3 for home automation

This entry was posted in Gadget on October 19, 2014 by Ray Chan.

Belkin Wemo motion and TP-Link HS110 smart switch with energy monitoring


I purchased the wemo motion and tp-link hs110 from HKTV and it delivered to me yesterday. Both were great toys. As this give me further control to more electronic that I would like to turn on and off. Talk a look at the wemo motion first. The package comes with a sensor and a smart […]

This entry was posted in Gadget on November 27, 2016 by Ray Chan.

Sony Octopus Mobile reader

Sony Octopus Mobile Reader     

Got this thing for free from Standard Chartered Bank o!epay promotion. Deposit $500HKD to o!epay account to entitled this free reader.

Finally got something useful from bank.

This entry was posted in Gadget on November 7, 2016 by Ray Chan.

Sony LSPX-P1

Sony LSPX-P1 Projector     

LSPX-P1 is a great device which allows you cast anything within your home network from the content of any device with HDMI out, Miracast compatible mobile app, Apple TV, Chromecast device, Windows 10 PC and etc. The size of the device also make it mobile enough to allow you cast anything to anywhere in your home. My daughter just loved it.

This entry was posted in Entertainment on November 6, 2016 by Ray Chan.

Hostgator ‘hacked’ my wordpress -_-;


Not sure what happened, but, received an email from Hostgator and said my wordpress version on gone outdated. And because of that, they decided to upgrade the wordpress for me.


Hostgator’s action is no different than a hacker. They both hacked my site and need me fix things.

This entry was posted in Uncategorized on September 18, 2016 by Ray Chan.

Raspberry Pi 7 inch touch screen display


Warning – 2016-04-17 Do NOT run your 7 inch touch screen on pi which have 4dpi driver installed. If you run the 7 inch touch screen you will probably need to turn the backlight on and off. This need to run rpi-update on your pi. If you previously have 4dpi driver installed, it will crash […]

This entry was posted in Raspberry Pi on April 11, 2016 by Ray Chan.

Running Kivy on 4DPI-35 without X

Kivy app display on 4DPI-35 without X Window     

I learned that it was impossible to have Kivy run on 4DPI-35 without X system. The project rpi-kivy-screen
on github make it possible.

This entry was posted in Raspberry Pi on March 15, 2016 by Ray Chan.

Monitor door open/close with HC-SR04

I want to know whenever the door is opened. I want an email alert when the door open event is captured. Capture an image from Panasonic IPCam BL-VP104W and attach it to the email so that I know who is entering the apartment. I was thinking to buy a securifi door/window magnetic reed sensor. However […]

This entry was posted in Raspberry Pi on March 7, 2016 by Ray Chan.

Giving Static IP to Pi

For raspbian version, check /etc/os-release Raspbian 7 (wheezy) Edit /etc/network/interfaces ETH0: change from ifface eth0 inet dhcp change to iface eth0 inet static address gateway netmask network broadcast Wireless Lan (Edimax for example) auto wlan0 allow-hotplug wlan0 iface wlan0 inet static address gateway dns-nameservers netmask […]

This entry was posted in Raspberry Pi on March 6, 2016 by Ray Chan.

Turn on and off 4DPI-32 using myDevices Cayenne

Cayenne widget to turn on and off 4DPI-32     

Here is the widget setting which I used to turn 4DPI-32 on and off remotely using iPhone app Cayenne.

This entry was posted in Raspberry Pi on February 28, 2016 by Ray Chan.

Enable SSL for Apache2 on Raspberry Pi

mkdir /etc/apache2/ssl openssl req -x509 -nodes -days 1095 -newkey rsa:2048 -out /etc/apache2/ssl/server.crt -keyout /etc/apache2/ssl/server.key a2enmod ssl ln -s /etc/apache2/sites-available/default-ssl /etc/apache2/sites-enabled/000-default-ssl edit /etc/apache2/sites-enabled/000-default-ssl SSLCertificateFile /etc/apache2/ssl/server.crt SSLCertificateKeyFile /etc/apache2/ssl/server.key /etc/init.d/apache2 restart

This entry was posted in Raspberry Pi on February 24, 2016 by Ray Chan.