My Sunwayman P02A is dead

I received Sunwayman P02A about two months ago and now it’s dead. A week ago, I was about to visit my parent in law and planed to bring two flashlights for my brothers in law. Before leaving, I performed a quick test to ensure that they are okay. Then I found that the Sunwayman P02A […]

Where is Fenix HL23 reviews?

After using Fenix headlamp HP05 for several weeks or months, I realized that this headlamp is too much for my daily needs. It’s bright, it’s powerful, but it’s also heavy. Later I decided to get a headlamp powered by just a single AA and my decision goes to Fenix HL25, not very bright nor fancy but fits my […]

flashlight runtime tester using arduino

Idea: Building a flashlight runtime tester

There are many articles discussing about building DIY lumen tester and I came across an idea to build such device using Arduino and some light intensity detector module to test a flashlight’s runtime. Instead of using lumens measurement during the time frame, I will only calculate its percentage during some period of time. Here’s my expected result […]

Fighting The Volcanic Ashes

At 13th of February 2014, a volcano located more than 200 km away from my hometown was erupted. I could clearly hear the sound of the erupted Mount Kelud at that night, sending eerie vibe to all over the island. I sent a prayer to people who might affected and went to sleep. Never expecting what might […]

flashlight app on smartphone

Flashlight on smartphone is getting worse

Non-flashlight users will normally say that “flashlight” application installed on their smartphone is a smart idea. But frankly, it’s a bad idea.Flashlight application in a smartphone most likely will consume more power than your phone should do in normal condition. It’s unreliable because it just give a dimmer light and resource wasting. In an emergency situation, […]