Made a simple LED traffic signs

We need to prepare tools, to do good work, must first sharpen his tools. If not familiar with the application of the tool, to find something more simple. First practice on the hand and then have a look the construction drawings, the required parts and lines are labeled on the diagram. led flashing traffic sign parts need: 10K resistance X2, 4.7K resistance x1, a 430 resistor x4, a potentiometer 1mx1, ceramic capacitors x1, elko4,7fx1, elko100fx1, bc327x1, ne555x1, IC transistor socket x1, PCB hollow plate x1 Prepare the materials needed to start, the plane to find a job first, put all the parts according to the circuit chart position is inserted into a circuit board pre opened hole, and then connecting element used wire pin. That is very simple, it requires each DIYer patient. IC socket is the first soldered to the circuit board, while the NE555 through the socket is installed, this can avoid the novice not careful because the welding time is too long or the welding tool is not anti-static measures and burnt integrated circuit. Inspection can have a look after electrifying effect! If welding is correct, after power can work. The adjustable potentiometer to adjust the flash frequency. Of course, here is a demonstration! You can put the solar traffic sign  into any color other than red, also can buy a light control panel to control led to achieve more dazzling effect.