• Simple design and simple logic. Basic level of electronics knowledge is enough.
• Assembly is needed.
• On/Off switch is available.
• Switch is available for the choice of LEDs to be lighted on.
• The design is a foolproof design, the user would not damage the kit even the player reverses the polarity of power supply.
• Power could be supplied by 9VDC power supply instead of 9V battery.
• The kits can stand up itself because leg is provided.  

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• A light dependent resistor (LDR) is used as sensor for this kit.
• The LED would be on and off in Fading style. This would be similar to the real streetlight.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

•  This is suitable for the operational amplifier with 8 or 14 legs such as LM324, LM393, LM339……

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• Simple design and simple logic. Basic level of electronics knowledge is enough.
• Each LED could be controlled individually
• Assembly is needed.
• The challenge and finniest of this kit are the soldering skill.
• On/Off switch is available.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• Warning LED and buzzer without using any IC on building the vibration circuit.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• Warning LED and buzzer without using any IC on building the vibration circuit.
• Supply voltage of power source and triggering voltage of signal could work independently.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• This is to simulate the behavior of magic candle.
• On and Off switch is provided.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• When you put your finger to the IR transmitter and receiver, beating of your heart would show as beating of LEDs.
• On and Off switch is provided.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• This is a useful latch circuit just by using transistor and resistor.
• Extra component such as NPN transistor, PNP transistor, resistor and capacitor is provided for the player to build up their wanted circuit.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• 15 sets of LEDs would light on by pointing to the infrared red receiver with pushing any button of any common remote control. The pattern is “I L U”.
• On and Off switch is provided.
• Duration of “ON” status of LEDs could be adjusted by variable resistor.
• There is a leg for the kit so that the kit could stand upright.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• When you put your finger between the IR transmitter and receiver, beating of your heartbeat would show as beating of LEDs with pattern “I L Y”. This is good tool for dating a girl.
• Buzzer could also beat as heartbeat.
• You could also turn off the buzzer and only showing flashing of LEDs.
• On and Off switch is provided.

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• IR transmitter breakout

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• IR receiver breakout

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• IR receiver PC838 breakout
• LED would be on when PC838 have got the signal from common remote control

(Assembly is needed by the player)

CIRCUIT EXPLANATION

• 3D Christmas tree and this can stand up itself.
• Four variable resistors are available for controlling the fading effect.
• Using traditional IC 4069 as fading effect controlling. No need any programming knowledge.
• On and Off switch is provided.

(Assembly is needed by the player)

CIRCUIT EXPLANATION