| XIAO ESP32-C3 |
1 |
Main controller for reading pressure and sending LED PWM control |
¥35 |
Tested in MVP / installed in electronics area |
| FSR pressure sensors |
2 |
Left and right sitting pressure input |
¥50 |
Placed between upper foam and lower 60D support foam |
| FSR adapter / small sensor boards |
2 |
Connect FSR sensors to the carrier PCB / controller |
¥10 |
Arranged in the electronics compartment |
| MOSFET module |
1 |
Switches the 24V COB LED using the XIAO low-voltage signal |
¥8 |
Tested and placed in the power side of the system |
| 24V warm COB LED strip |
1 |
Main light output |
¥30 |
Installed along the wooden frame route |
| 24V battery / power source |
1 |
Provides power for the LED side |
¥60 |
Placed in a separated protected compartment |
| Carrier PCB / prototype board |
1 |
Organizes FSR inputs, LED control signal, and XIAO connections |
¥10 |
Prototype tested, connection method still needs improvement |
| SMD pin headers / direct solder connections |
as needed |
Lower-profile connection method for the carrier PCB |
¥5 |
Tested after terminal connectors were abandoned |
| Upper foam cushion |
1 |
Soft sitting surface |
¥20 |
Integrated with the FSR sensor stack |
| Lower 60D support foam |
1 |
Supports the FSR layer and spreads pressure |
¥20 |
Integrated under the FSR sensors |
| Elastic webbing |
several strips |
Secondary support between foam and wooden frame |
¥10 |
Installed on the wooden frame |
| CNC wooden frame / base |
1 |
Main internal structure, LED route, electronics area |
¥20 |
Cut, assembled, and used for final dry-fit |
| Printed LED holders |
several sections |
Holds the COB LED route along the base |
¥5 |
Fixed with M2.5 screws / glue depending on position |
| Transparent PETG diffuser |
several pieces |
Softens and hides the COB LED light |
¥5 |
Tested and used with the LED route |
| Electronics holder modules |
several pieces |
Hold PCB, MOSFET, sensor modules, and battery compartment |
¥5 |
Printed and fitted into the frame |
| Transparent self-adhesive feet |
4 |
Raises the base slightly and reduces rubbing |
¥5 |
Added under the bottom frame |
| Wires, heat-shrink, glue, screws |
as needed |
Wiring, insulation, and mechanical fixing |
¥15 |
Used during integration and dry-fit |
| Fabric cover |
1 |
Covers the cushion and hides the internal system |
¥20 |
Added in the final installation display |
| Water atomizer module |
1 |
Optional subtle scent cue output for later extension |
¥11 |
Tested separately with pressure-linked trigger |