HardLabs

Autostop killer

kubiq·autostop-killer·kicad/autostop-killer.kicad_pcb

Autostop killer PCB layout, top view — open source AVR/Arduino board by kubiq

About the Autostop killer PCB

Autostop killer is an open source AVR/Arduino PCB design by kubiq, published on GitHub under the MIT license. It is a 2-layer board measuring 33 × 34 mm, with 8 components from 8 distinct parts.

Its main chip is the ATTINY85-20PU, from the AVR/Arduino family. Other key parts include the L78L05. By type, the board carries 2 ICs, 2 capacitors, 1 transistor, 1 connector, 1 diode and 1 resistor.

From the project

Generated for KiCad 10 (schematic format 20250114). All files were validated by rendering with kicad-cli; the schematic netlist was diffed against the intended netlist and matches exactly (6 nets, 8 components).

Generated for KiCad 10 (schematic format 20250114). All files were validated by rendering with kicad-cli; the schematic netlist was diffed against the intended netlist and matches exactly (6 nets, 8 components).

Optional polish (in KiCad, not required): tighten placement, tidy schematic label positions (connectivity is already correct), add mounting holes / silkscreen text.

Main components on the Autostop killer

ATTINY85-20PUL78L05

Autostop killer bill of materials (BOM)

8 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY85-20PU
ATtiny85-20PU
U1
1
L78L05
U2
1
BS170
Q1
1
12V/GND/ISG
J1
1
SS34
D1
1
100UF/35V
100uF/35V
C1
1
100NF
100nF
C2
1
100K
100k
R1

Autostop killer design files

The KiCad project lives in the kubiq/autostop-killer repository on GitHub; these links point at the commit this page was built from.

Autostop killer: common questions

What microcontroller does the Autostop killer use?

The Autostop killer is built around the ATTINY85-20PU, from the AVR/Arduino family.

How big is the Autostop killer PCB?

The Autostop killer measures 33 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Autostop killer?

8 components, from 8 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Autostop killer design files?

From the kubiq/autostop-killer repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Autostop killer design in my own project?

Yes, under the terms of its MIT license, which kubiq chose for the repository.

Can I test firmware for the Autostop killer without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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