This product is shipped directly from Sydney, Australia, with worldwide shipping available. We can deliver to the USA, Canada, New Zealand, the UK, as well as countries in both the EU and non-EU regions.
Introducing our advanced LED chaser kit, a refined version of the traditional LED chaser. This upgraded kit is designed to respond to both infrared (IR) signals and ambient light.
While it operates like a standard LED chaser, it incorporates a photoresistor to control the speed of the LED chase. In traditional LED chasers, speed adjustment is managed through a variable resistor. In our kit, the photoresistor replaces this variable resistor, allowing the chase speed to adjust dynamically based on the light falling on the photoresistor.
Additionally, the kit can be configured to respond to infrared signals. When this feature is activated, the LED chaser will only function when it detects a signal from an IR remote control pointed at the infrared receiver.
You can utilize both the infrared and photoresistor functionalities simultaneously for more versatile operation.
How It Works: The kit features an NE555 timer configured in astable mode, paired with a CD4017 decade counter. The NE555 timer can be powered directly or through a BC547 transistor, with an SPDT switch to toggle between power sources. The NE555 timer’s output is connected to the CD4017, which lights up the LEDs in sequence with each pulse from the NE555.
A photoresistor is integrated into the circuit to replace the variable resistor. As light levels on the photoresistor vary, the NE555’s output frequency changes, which in turn adjusts the LED chase speed. To ensure optimal operation, a small piece of heat shrink tube is included to block excess light from reaching the photoresistor.
Operating Voltage: The kit operates at 6V DC. Although the demonstration video shows 9V, please use 6V as the voltage should not exceed 9V.
Assembly Instructions: The PCB is designed with clear silkscreen labels to guide beginners in soldering the components. Each component is clearly labeled on the board. An assembly tutorial is provided at the end of this page to assist with the soldering process. Basic soldering knowledge is sufficient to complete this kit.
Kit Includes:
- 1 x Bare PCB
- 1 x CD4017 Decade Counter
- 1 x NE555 Timer IC
- 1 x 16-pin DIL Socket
- 1 x 8-pin DIL Socket
- 1 x Photoresistor (LDR)
- 1 x TSOP4838 or TSOP1838 Infrared Sensor
- 1 x 2-pin Screw Terminal
- 1 x BC547 NPN Transistor
- 1 x BC557 PNP Transistor
- 1 x 1μF Capacitor
- 1 x 100μF Capacitor
- 1 x 1P DIP Switch
- 2 x SPDT Switches
- 10 x 5mm LEDs
- 3 x 5mm Multi-colored LEDs
- 6 x 1kΩ Resistors
- 2 x 470Ω Resistors
- 1 x 470kΩ Resistor
- 1 x 9V Battery Connector
Documents:
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1. Assembly images- Detailed visual guides to assist with soldering components onto the PCB.
Enjoy the enhanced functionality and flexibility of our advanced LED chaser kit!
The product is available at https://www.buildcircuit.com/shop/led…
