2 layers83.8 × 55.6 mm
Module CH224K USB C PD sink tiled
Squantor/various_PCB
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234 parts4MIT
2 layers50 × 25 mm
Module zerocross detector
Squantor/various_PCB4Various little boards are added here like level shifters, oscillator breakouts and other simple PCB's. Most of these boards are breadboard plugin friendly.
- Size
- 50 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 19
- Pads
- 87
- Tracks, vias
- 108, 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Nov 2014
- Updated
- 18 Jan 2026
Overview
Module zerocross detector is an open-source printed circuit board by Squantor, from the Squantor/various_PCB repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 25 mm with 28 parts on 19 nets, routed with 108 tracks and 4 vias.
It is built around the MMBT3904. Its parts include 10 resistors, 5 diodes, 2 capacitors, 2 transistors and 2 connectors. It belongs with the interfaces and adapters boards of this library.
Main components
1README
electronics/neopixel_RGB_4pin/README.mdNeopixel formfactor RGB LED
RGB WS2812B style neopixel
TODO's
- Produce at Aisler
- Assemble
- Test & characterise
- update Readme.md with pictures and BOM
BOM
- WS2812 style led in a 4 pin 5050 package
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1N4148 | Diode_SMD:D_MiniMELF | D1, D2, D3, D4, D5 |
| 4 | 100K | SquantorRcl:R_1206 | R1, R2, R3, R4 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 1K | SquantorRcl:R_0603_hand | R6, R8, R10 |
| 2 | MMBT3904 | SquantorIC:SOT23-3 | Q1, Q2 |
| 1 | 10u | SquantorRcl:C_0805 | C2 |
| 1 | 1n | SquantorRcl:C_0805 | C1 |
| 1 | 2.2M | SquantorRcl:R_0603_hand | R7 |
| 1 | 20210317 | SquantorLabels:Label_Generic | N1 |
| 1 | 22K | SquantorRcl:R_1206 | R5 |
| 1 | 47 | SquantorRcl:R_0603_hand | R9 |
| 1 | 4N28 | Package_DIP:DIP-6_W7.62mm | U1 |
| 1 | Conn_01x02 | SquantorPhoenixContact:MKDS_2conn_508pitch_1711725 | J1 |
| 1 | Conn_01x03 | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J2 |
| 1 | OHWLOGO | Symbol:OSHW-Symbol_6.7x6mm_SilkScreen | N2 |
Questions
How big is the Module zerocross detector PCB?
It measures 50 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Module zerocross detector use?
28 parts, built around the MMBT3904. 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 Module zerocross detector KiCad files?
From the Squantor/various_PCB repository on GitHub, at the commit this page was made from: the board is electronics/module_zerocross_detector/module_zerocross_detector.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Module zerocross detector 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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