Desk Chair Occupancy Sensor
A sitting time tracker using weight or pressure sensor. The thin pad goes under chair cushion, detects when seated. Logs sitting duration, reminds to stand/stretch after configurable intervals. Dashboard shows daily sitting patterns. Helps combat sedentary lifestyle health risks. This desk occupancy sensor project is perfect for makers, DIY enthusiasts, and electronics hobbyists. Search volume: 320/month.
All parts, CAD, wiring, and firmware generated by Modo AI Hardware Builder with human direction.
—Validated fit
—Electrical OK
—Assembly ready
Parts
| Part | Why | MPN | Qty | |
|---|---|---|---|---|
| ESP32-C3 Development Board Espressif Systems |
Main microcontroller for processing pressure sensor data, logging sitting duration, managing configurable reminder intervals, and generating daily pattern dashboard data | ESP32-C3-DEVKITM-1-N4X |
1 | |
| Force Sensitive Resistor DFRobot |
Pressure sensor to detect chair occupancy and monitor sitting time for the sitting time tracker functionality | DFR0067 |
1 | |
| 12-bit ADC for FSR Bosch Sensortec |
Additional analog processing capability for accurate pressure measurement from the FSR sensor | BMI270 |
1 | |
| CR2032 Coin Cell Battery Energizer Battery Company |
Battery power supply for portable operation under cushion placement, meeting the battery power constraint | CR2032VP |
2 | |
| CR2032 Battery Holder Keystone Electronics |
Secure mounting for CR2032 battery in compact form factor suitable for under cushion placement | 1042P |
1 | |
| 3.3V LDO Regulator Shenzhen Slkormicro Semicon Co., Ltd. |
Stable 3.3V power regulation from battery for consistent sensor operation and MCU power supply | AMS1117-3.3 SOT-223 |
1 | |
| Power Switch C&K |
Manual power control to conserve battery life when device is not in use | OS102011MS2QN1 |
1 | |
| 100nF Ceramic Capacitor Lite-On Inc. |
Bypass capacitors for MCU and sensor power supply filtering to ensure stable operation | LTST-C171GKT |
3 |
8 unique parts, 11 total components