2 layers

NegativeVoltage

Random things related to electronics

Copper layers: 2
Thickness: 1.6 mm
Parts: 11
Nets: 8
Pads: 28
Tracks, vias: 51, 0
Pours: 1
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 28 Feb 2020
Updated: 2 Nov 2026

Overview

NegativeVoltage is an open-source printed circuit board by okoz, from the okoz/electronics repository on GitHub. It is a 2-layer board with 11 parts on 8 nets, routed with 51 tracks and 0 vias.

Its parts include 4 capacitors, 2 resistors, 2 diodes, 2 connectors and 1 IC.

README

flip-flop/README.md

Flip-Flop

Storage for 1-bit of information but only when it's sunny: Storage

Here are some photos half way through assembly along with a screenshot from KiCad. Behold the red solder mask! This is the first board I've ever etched.

Front	PCB	Back

Parts

Qty	Value	Footprint	References
2	1N4001	Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal	D1, D2
2	22uF	Capacitor_THT:CP_Radial_D5.0mm_P2.50mm	C3, C4
2	Screw_Terminal_01x02	TerminalBlock:TerminalBlock_bornier-2_P5.08mm	J1, J2
1	0.022uF	Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm	C2
1	0.1uF	Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm	C1
1	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2
1	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1
1	LM555	Package_DIP:DIP-8_W7.62mm_Socket_LongPads	U1

Questions

What parts does the NegativeVoltage use?

11 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the NegativeVoltage KiCad files?

From the okoz/electronics repository on GitHub, at the commit this page was made from: the board is negative-voltage/NegativeVoltage.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the NegativeVoltage design in my own project?

Its repository states no licence, so its author keeps all rights: ask okoz before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/okoz-electronics-negativevoltage" title="NegativeVoltage in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/okoz-electronics-negativevoltage.jpg" alt="NegativeVoltage" width="1200" height="900">

A picture that opens the board, for a README

[![NegativeVoltage](https://pcbkit.io/embed/boards/okoz-electronics-negativevoltage.jpg?size=s)](https://pcbkit.io/boards/okoz-electronics-negativevoltage)

Source

Repository: okoz/electronics
Board file: negative-voltage/NegativeVoltage.kicad_pcb
Commit: c0c8a61
Licence: Not stated

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