Touch relay jack
asukiaaa·touch_relay_jack·pcb/touch_relay_jack.kicad_pcb
About the Touch relay jack PCB
Touch relay jack is an open source PCB design by asukiaaa, published on GitHub. It is a 2-layer board measuring 38.9 × 33.3 mm, with 9 components from 8 distinct parts.
Other key parts include the Pro_Micro. By type, the board carries 3 resistors, 2 diodes, 1 module, 1 transistor, 1 connector and 1 relay.
From the project
Control a audio jack with using relay referencing touch sensor value.
Control a audio jack with using relay referencing touch sensor value.
Pro Micro Pin | Role --------- | ---- D4 | Relay D8 | Touch signal in D9 | Touch signal out
- Relay - Mosfet - Diode - Resistor 1k - Resistor for touch sensor: 220k or 1M - 3.5mm audio jack - LED Green - Pin Socket - Pro Micro

Main components on the Touch relay jack
Touch relay jack bill of materials (BOM)
9 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Pro_Micro | Pro_Micro | A1 |
| 1 | Q_NMOS_GSD | SOT-23 | Q1 |
| 1 | AudioJack3_Ground | Jack_3.5mm_Switronic_ST-005-G_horizontal | J1 |
| 1 | Y14x-1C-xxDS | Relay_SPDT_HsinDa_Y14 | K1 |
| 1 | D_Shockley | D_SOD-523 | D1 |
| 1 | LED | LED_0603_1608Metric | D2 |
| 2 | 1K | R_0603_1608Metric | R1, R2 |
| 1 | 1M | R_0603_1608Metric | R3 |
Touch relay jack design files
The KiCad project lives in the asukiaaa/touch_relay_jack repository on GitHub; these links point at the commit this page was built from.
Touch relay jack: common questions
How big is the Touch relay jack PCB?
The Touch relay jack measures 38.9 × 33.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Touch relay jack?
9 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Touch relay jack design files?
From the asukiaaa/touch_relay_jack repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Touch relay jack design in my own project?
The repository has no license, so all rights stay with asukiaaa. Use it as a reference, and ask the author before reusing the design.