555 Astable (Tone Generator) Project Kit

This kit is perfect for studying the use of a 555 timer in its astable mode, where it produces a square wave output. The frequency of which is adjustable via the variable resistor. The board has a choice of two outputs. The logic output can be used to drive another IC or a speaker can be connected so the tone is heard (e.g. a door bell). The push button switch connects to the reset line such that the IC is only active when the button is pressed.

This kit contains:

• 1 x 555 Timer IC
• 1 x 8 pin IC Holder
• 1 x 3.3Kohm Resistor
• 1 x 10Kohm Resistor
• 1 x 47Kohm Potentiometer
• 2 x 10nF Ceramic Capacitors
• 1 x BC547 NPN Transistor
• 1 x Push To Make Switch
• 1 x PP3 Clip Lead
• 1 x 3AA Battery Holder
• 0.5m connecting wire
• 1 x Tone Generator PCB
• Supplied in Tough Plastic Box with internal dimensions of 95 x 60 x 35mm

PCB dimensions: 40mm x 40mm.

Requires 3 x AA batteries and depending upon desired use a speaker, both available separately.

Click here to download instructions.