HardLabs

Astable miltivibrator

JKCadilo14-CpE·DIY-Circuits·Transistor Based/astable miltivibrator Circuit/astable miltivibrator.kicad_pcb

Astable miltivibrator PCB layout, top view — open source board by JKCadilo14-CpE

About the Astable miltivibrator PCB

Astable miltivibrator is an open source PCB design by JKCadilo14-CpE, published on GitHub under the MIT license. It is a 2-layer board measuring 71.1 × 76.2 mm, with 12 components from 7 distinct parts.

By type, the board carries 4 resistors, 2 transistors, 2 connectors, 2 diodes and 2 capacitors.

From the project

Collection of electronic circuits I designed, tested, and documented using KiCad

A beginner-friendly two-transistor astable multivibrator that alternates two LED outputs using cross-coupled transistor and capacitor stages.

This project demonstrates a classic astable multivibrator circuit. Two 2N3904 transistor stages are cross-coupled through timing capacitors and resistor networks so the LED outputs alternate.

The circuit is useful for learning transistor switching, capacitor charging behavior, polarized component orientation, breadboard-to-PCB troubleshooting, and basic oscillator concepts. It is an educational demonstration only and does not document a measured blink…

Astable miltivibrator, from the project README
From the project README

Astable miltivibrator bill of materials (BOM)

12 components, 7 distinct parts.

QtyPartRefs
2
2N3904
Q1, Q2
1
input gnd
J1
1
input
J2
2
LED
D1, D2
2
220 uF
C1, C2
2
1K ohms
R1, R4
2
5K ohms
R2, R3

Astable miltivibrator design files

The KiCad project lives in the JKCadilo14-CpE/DIY-Circuits repository on GitHub; these links point at the commit this page was built from.

Astable miltivibrator: common questions

How big is the Astable miltivibrator PCB?

The Astable miltivibrator measures 71.1 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Astable miltivibrator?

12 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the Astable miltivibrator design files?

From the JKCadilo14-CpE/DIY-Circuits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Astable miltivibrator design in my own project?

Yes, under the terms of its MIT license, which JKCadilo14-CpE chose for the repository.

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