Simple High power LED flashlight
This is simple hight power LED flashlight,we use 24 LEDs super bright for display and 3 AA batteries and resistor for limit current so cheaper.
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March 17, 2017
Electronics learning with Homeschooling
How to install arduino driver Software (IDE) on ubuntu 16.04
My son wants to learn Arduino microcontroller for making the robot. Now, he likes Ubuntu OS. Because it is very fast and good no ads and no virus. He likes to…
July 4, 2016
How to make fast blinking lights for bike
This is a fast blinking LED bike light circuit For safety when the bike at night. We use two-NPN-PNP transistor oscillator circuit and RC circuit only show on 4 LEDs…
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Learn LDR automatic LED flashlight
How to quickly learn transistor and LDR circuits? In this post, I am going to show you how easy learning. My son wants to build a simple automatic flasher. It…
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How to Build a Simple 12 volts power supply circuit with a hammer
Build 12V high current power supply, do not need PCB. We use a hammer and nail ! Why?
November 4, 2015