2 layers107 × 54 mm
2 layers
Practice breath light
hzzqq1/PCB-simple-design- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 9
- Pads
- 36
- Tracks, vias
- 91, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Aug 2026
- Updated
- 11 Sep 2026
Overview
Practice breath light is an open-source printed circuit board by hzzqq1, from the hzzqq1/PCB-simple-design repository on GitHub. It is a 2-layer board with 11 parts on 9 nets, routed with 91 tracks and 4 vias.
It is built around the NE555D. Its parts include 6 resistors, 2 capacitors, 1 IC, 1 diode and 1 connector.
Main components
1README
README.mdPCB-simple-design
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R7, R8 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R3, R6 |
| 1 | 0.01uf | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 0.15uf | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 3k | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 5k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | NE555D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-17 | J1 |
Questions
What parts does the Practice breath light use?
11 parts, built around the NE555D. 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 Practice breath light KiCad files?
From the hzzqq1/PCB-simple-design repository on GitHub, at the commit this page was made from: the board is NE555DR astable LED light/original file/Practice breath light.kicad_pcb and its schematic NE555DR astable LED light/original file/Practice breath light.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Practice breath light design in my own project?
Its repository states no licence, so its author keeps all rights: ask hzzqq1 before reusing the design.
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