FK1223 Solderless 7 LED Chaser – Circular pattern


The FK1223 is a solder-less kit which introduces a circular Chaser circuit of 7 LEDs .

10 in stock (can be backordered)


This kit is demonstrates how an  Astable Multi-vibrator can be used in an interesting application.

No Soldering is required as the kit comes with sockets already installed and just needs the correct components to be inserted.

The FK1223 uses  7 LEDs  arranged in a circular pattern. One LED is mounted in the center of the circle, and remains ON permanently.  The other LEDs form the circle and “Chase” each other around the circle.


The kit lends itself to simple experimentation and changing Resistor or Capacitor component values to change the oscillator frequency and hence the rate of the flashing.


Construction Notes come with each kit.  The Notes include step-by-step graphics of the assembly process.

The student notes are aimed at allowing students to work at their own pace, and achieve a high probability of success.


Technical Specifications

– Power Supply : 9VDC

– Current Consumption : 47mA

– PCB dimensions : 55.9 mm x 63.5 mm.  ( 2.2 x 2.5 in.)


Additional information

Weight .1 kg
Dimensions 12 × 10 × 3 cm