Discrete 555 Timer – PCB

From its beginnings in 1971, the humble 555 timer IC has found itself at the heart of many designs.

Now you can find out what makes the 555 timer tick and build your own with this PCB.  Note that this product is the PCB and instructions only. If you don’t have your own components, then the kit version is best for you.

Instant access to the pdf instructions upon purchase (via confirmation email) and the PCB is usually dispatched within two working days.

See this kit being used as a clock with a Z80 CPU on YouTube.

Requirements:

To complete the project you’ll need the following tools.

• Soldering iron
• Solder
• Small side-cutters
• 5V dc power source to use the kit

Handy tools to have “just in case”

• Desoldering tool
• Solder wick
• Small pliers
• Digital Multimeter

Components Required:

• 2 x 1N4148 diode
• 1 x 100 ohm 1/4 watt resistor
• 1 x 220 ohm 1/4 watt resistor
• 1 x 820 ohm 1/4 watt resistor
• 1 x 1 kilo ohm 1/4 watt resistor
• 1 x 3.9 kilo ohm 1/4 watt resistor
• 4 x 4.7 kilo ohm 1/4 watt resistor
• 4 x 5.1 kilo ohm 1/4 watt resistor
• 1 x 6.8 kilo ohm 1/4 watt resistor
• 1 x 10 kilo ohm 1/4 watt resistor
• 2 x 100 kilo ohm 1/4 watt resistor
• 12 x 2N3904 transistor
• 12 x 2N3906 transistor
• 1 x 8-way header (same style used on Arduino, pin spacing 2.54 mm)