HardLabs

Bat

polaracep·soldering-kits·bat/bat.kicad_pcb

Bat PCB layout, top view — open source board by polaracep

About the Bat PCB

Bat is an open source PCB design by polaracep, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 94.4 × 48.6 mm, with 16 components from 9 distinct parts.

By type, the board carries 6 resistors, 3 transistors, 3 capacitors, 2 diodes, 1 battery holder and 1 switch.

From the project

A collection of easy-to-solder boards for learning soldering

The astable multivibrator generates a distorted ramp wave, which in turn gets smoothened out by a filter, driving 2 LEDs with a transistor creating an effect of the bat's ominously blinking eyes.

The circuit can take some time until it starts blinking.

Bat, from the project README
From the project README

Bat bill of materials (BOM)

16 components, 9 distinct parts.

QtyPartRefs
3
2N3904
Q1, Q2, Q3
1
2032
BT1
1
SW_SPDT
SW1
2
RED
D1, D2
3
47u
C1, C2, C3
2
10k
R1, R2
2
47k
R3, R4
1
330
R5
1
300k
R6

Bat design files

The KiCad project lives in the polaracep/soldering-kits repository on GitHub; these links point at the commit this page was built from.

Bat: common questions

How big is the Bat PCB?

The Bat measures 94.4 × 48.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bat?

16 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bat design files?

From the polaracep/soldering-kits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Bat design in my own project?

Yes, under the terms of its AGPL-3.0 license, which polaracep chose for the repository.

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