๐ ๏ธ MAKER GUIDEMay 16, 2026โขโฑ๏ธ 1 min readโข๐ณ๐ต Tested in Nepal
High-Precision Optical RPM Tachometer & Pulse Counter with TCRT5000
Count high-speed gear revolutions, belt speeds, and product packaging conveyor units with the TCRT5000 reflective infrared sensor module.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
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Estimated Total (4/4 items):
NPRย 1,410
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NPRย 120
NPRย 750
NPRย 500
NPRย 40
High-Precision Optical RPM Tachometer & Pulse Counter with TCRT5000
The TCRT5000 Infrared Reflective Tracking Sensor Module reads optical black/white markers on motor shafts to calculate RPM with precision on an Arduino Nano and OLED screen.
Hardware Bill of Materials:
- Optical Sensor: TCRT5000 Infrared Reflective Optical Tracking Sensor Module
- Microcontroller: Arduino Nano V3.0 Solderless
- Display: 0.91 inch OLED module blue OLED 128X32 GND-VCC-SCL-SDA
- Audio Feedback: Active Buzzer (5V)
Circuit Pinout & Wiring Connections:
| TCRT5000 Sensor Pin | Arduino Nano Pin | Function / Description |
|---|---|---|
| TCRT5000 VCC / GND | 5V / GND | Infrared Reflex Sensor Power |
| TCRT5000 Digital OUT (DO) | Pin D2 (INT0) | Edge Triggered Revolution Pulse |
| 0.91" OLED SDA / SCL | Pin A4 / Pin A5 | I2C RPM & Item Count Screen |
| Active Buzzer (+) | Pin D4 | Audible Batch Target Beep |
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Smart Automated Window Curtain Opener with 28BYJ-48 Stepper & LDR
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