1.Introduction:

• BSD-50 Dual-Color Flashing Light DIY Kit is a flash kit consists of circuit board and allows 50pcs LED flash alternately.
• It can simulate the traffic signal indicator which is very helpful for beginners to understand the circuit principle.

2.Feature:

• 50pcs highlight LED
• Perfect simple circuit
• Automatic flashing
• Comes with battery box

3.Parameter:

• Product Name:BSD-50 Dual-Color Flashing Light DIY Kit
• Product Number:BSD-50
• Work Voltage:DC 3V~6V
• Work Current:50mA
• Power Type:Battery Box
• Work Module:Switch Control
• Color:REd+Blue LED
• Flashing Speed:Adjustable
• Flashing Mode:Left 4times => Right 4times => All 4times
• Work Temperature:-40℃~85℃
• Work Humidity:0%~95%RH
• Main PCB Size(Installed):664513mm
• LED PCB Size(Installed):612911mm

4.Application:

• Training welding skills
• Student school
• DIY production
• Project Design
• Electronic competition

5.Installation Tips:

• User needs to prepare the welding tool at first.
• Please be patient until the installation is complete.
• The package is DIY kit.It need finish install by user.
• The soldering iron can't touch the components for a long time(1.0 second), otherwise it will damage the components.
• Pay attention to the positive and negative of the components.
• Strictly prohibit short circuit.
• User must install the LED according to the specified rules.Otherwise some LED will not light.
• Install complex components preferentially.
• Make sure all components are in right direction and right place.
• Check that all of the LED can be illuminated.
• It is strongly recommended to read the installation manual before starting installation!!!
• Please wear anti-static gloves or anti-static wristbands when installing electronic components.

6.Installation Steps(Please be patient):

• Step 1: Install 2pcs 22ohm Metal Film Resistor at R8,R9.
• Step 2: Install 7pcs 1Kohm Metal Film Resistor at R1-R7.
• Step 3: Install 6pcs DO-41 1N4007 Diode at D1-D6.The white mark is negative pole.
• Step 4: Install 1pcs 0.1uF 104 Ceramic Capacitor at C3.
• Step 5: Install 2pcs DIP-16 CD4017 at U2,U3.There is a dot on one end of the IC and there is a mark on PCB where the IC can place on.These two marks are corresponding to each other and are used to specify the installation direction of the IC.
• Step 6: Install 3pcs XH2.54-2P Male Socket at CN1-CN3.
• Step 7: Install 1pcs DIP-8 NE555 at U1.There is a dot on one end of the IC and there is a mark on PCB where the IC can place on.These two marks are corresponding to each other and are used to specify the installation direction of the IC.
• Step 8: Install 5pcs TO-92 S8050 Transistor at Q1-Q5.
• Step 9: Install 1pcs 100uF Electrolytic Capacitor at C1.Pay attention to distinguish between positive and negative.The Longer pin is positive pole.The longer pin is inserted into the rectangular pad.
• Step 10: Install 1pcs 10uF Electrolytic Capacitor at C2.Pay attention to distinguish between positive and negative.The Longer pin is positive pole.The longer pin is inserted into the rectangular pad.
• Step 11: Install 1pcs 5.8*5.8mm Self-locking Switch at SW1.There is a concave on switch and there is a white mark on PCB where the switch can place on.These two marks are corresponding to each other and are used to specify the installation direction of the switch.
• Step 12: Install 1pcs 100Kohm Potentiometer at VR1.
• Step 13: The longer pin is inserted into the rectangular pad(positive pole). The shorter pins are inserted into the oval pads.
• Step 14: Install 25pcs Green LED on one light PCB and 25pcs Yellow LED on another light PCB .
• Step 15: Install wire to 3pcs PCB.Red wire connects to positive pole and Black wire connects to negative pole.
• Step 16: Connect to power supply and enjoy the effect.