I'm using LED downlights in my home as the main light source. One of them became flickering. After some research on the Internet, most of them will tell you that maybe the LED driver quality is not good and give unstable voltage to the LEDs. So, I changed the LED driver that I ordered from the China websites. It works but a month later, the same LED downlight flickered … [Read more...]
Repair A Broken iPhone Lightning Cable
Have a iPhone lightning cable where its white insulation has been peeled off and the internal wire exposed? If the cable is still functioning, e.g. you are able to charge your phone and transfer data, do not throw it away. You can save the cable by a simple fix. First, you need to find a heat shrink tube that is about the size of the lightning cable connector. It is … [Read more...]
New Gadget – MacBook Pro with Retina Display (2015)
Ok. My new gadget is in the house now - MacBook Pro with Retina Display 2015. It replaces my nearly 5 years old's MacBook Air. My MacBook Air is still working good just that it creates a lot of heat and noise (fan) when running heavy stuffs like IDE and compiling source code. Always want to replace one and now it is the time. MacBook Pro with Retina Display 2015 has more … [Read more...]
One Watt LED Night Light
This is a very simple electronic project. I built this as a night light in my sleeping room. The reason for building this was, the existing LED night light that I bought from the Mr DIY is a bit dangerous because it needs to be connected to AC power source and my daughter always wants to play with it. With this LED night light, I can connect it to any mobile phone's … [Read more...]
Electronics Project – Simple Card Read Keyboard Emulator Using Arduino Pro Micro
I bought this little thing - Micro Pro - from the China website. I think it is a clone or compatible to the SparkFun's Micro Pro. It is easy to use. It comes with USB that you can use it to program the microcontroller or let the microcontroller to communicate with your computer. You can simply use the Keyboard library from the Arduino to program a keyboard emulator: … [Read more...]