

Mks wifi breakout
A small pcb to fit the mks wifi socket on the stock main board. Includes a passive buzzer and header footprints to access the MCU gpio for wiring up mods. This keeps the wiring tidy.
- Size
- 24 × 22.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 18
- Pads
- 41
- Tracks, vias
- 47, 3
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 6 Oct 2024
- Updated
- 12 Oct 2024
Overview
Mks wifi breakout is an open-source printed circuit board by mulcmu, from the mulcmu/qqsp repository on GitHub, published under the MIT licence. It is a 2-layer board of 24 × 22.2 mm with 11 parts on 18 nets, routed with 47 tracks and 3 vias.
It is built around the AO3401A. Its parts include 2 resistors and 1 transistor. It belongs with the radio and wireless and interfaces and adapters boards of this library.
Main components
1README
readme.mdCollection of my FLSUN QQ-S Pro projects:
Wifi breakout board and buzzer
A small pcb to fit the mks wifi socket on the stock main board. Includes a passive buzzer and header footprints to access the MCU gpio for wiring up mods. This keeps the wiring tidy.
)
Capacitive Nozzle Probe
Concept probe to use capacitive touch input on an ESP32-S3 triggered by nozzle contact. Working pretty well.

Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | Conn_01x03 | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | PA5, PA8, PA9, PA10, PC7 |
| 2 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | BLACK, GREEN |
| 1 | 0 | Resistor_SMD:R_1206_3216Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 5020 Passive | 1mks:5020passiveBuzzer | BZ1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
Questions
How big is the Mks wifi breakout PCB?
It measures 24 × 22.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mks wifi breakout use?
11 parts, built around the AO3401A. 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 Mks wifi breakout KiCad files?
From the mulcmu/qqsp repository on GitHub, at the commit this page was made from: the board is mks_wifi_breakout/mks_wifi_breakout.kicad_pcb and its schematic mks_wifi_breakout/mks_wifi_breakout.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mks wifi breakout design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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