TW PCB 1V1
mzourack·TRIGGER-WARNING·TW_PCB_1V1/TW_PCB_1V1.kicad_pcb
About the TW PCB 1V1
TW PCB 1V1 is an open source PCB design by mzourack, published on GitHub. It is a 2-layer board measuring 9.2 × 103.1 mm, with 12 components from 6 distinct parts.
By type, the board carries 5 connectors, 3 resistors, 2 switches and 2 diodes.
It belongs with the audio designs in this gallery.
From the project
passive 2HP Eurorack gate & trigger utility
Trigger Warning allows you to do a couple of things with gate and trigger signals:
-route the output signal to one of two destination
The module is trivial to build - only 12 components are soldered.
Allign the jacks and switches with the pcb and panel as best as possible before soldering. Edges of the plastic body of the jacks can protrude from the 2HP contour of the module if you don't.

TW PCB 1V1 bill of materials (BOM)
12 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | Thonkiconn | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1, J2, J3, J4, J5 |
| 1 | SPDT_ON-ON | submini_switch_3_pin | SW1 |
| 1 | SPDT_ON-OFF-ON | submini_switch_3_pin | SW2 |
| 2 | BAT42 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 1 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
TW PCB 1V1 design files
The KiCad project lives in the mzourack/TRIGGER-WARNING repository on GitHub; these links point at the commit this page was built from.
- LayoutTW_PCB_1V1/TW_PCB_1V1.kicad_pcb
- SchematicTW_PCB_1V1/TW_PCB_1V1.kicad_sch
- BOMbom.csv
TW PCB 1V1: common questions
How big is the TW PCB 1V1?
The TW PCB 1V1 measures 9.2 × 103.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TW PCB 1V1?
12 components, from 6 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 TW PCB 1V1 design files?
From the mzourack/TRIGGER-WARNING 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 TW PCB 1V1 design in my own project?
The repository has no license, so all rights stay with mzourack. Use it as a reference, and ask the author before reusing the design.
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