Rcexl Ignition Mini Tachometer

RCEXL Ignition Mini Tachometer
Designed specifically for use with RCEXL ignition systems, this compact Mini Tachometer provides accurate real-time RPM readings without the need for batteries. Powered directly from your ignition unit, it features a P1C16F628A microcontroller and a high-brightness LED digital display, capable of measuring up to 30,000 RPM.

With a standard Futaba plug connector and lightweight design, this mini tachometer is easy to install using a Y-wire connection between your ignition and Hall sensor. Its durable, vibration-resistant wiring setup ensures reliable data during flight.

Key Features:

• Microcontroller: P1C16F628A for precise RPM calculation

• Battery-free operation, powered by ignition voltage (3.5V–8.4V input)

• Standard Futaba plug wiring (Black: Negative, Red: Positive, White: Signal)

• High-brightness LED digital display shows RPM up to 30,000 (Actual RPM = Display × 10)

• Compact size: 41mm (L) × 17mm (W) × 12mm (H), weight: 8.5g

• Easy Y-wire installation between Hall sensor and ignition

• Recommended to remove after flight to prevent wiring issues

• Designed to avoid signal interference by routing wires away from ignition high-voltage cables

Installation Instructions:

1. Connect the Y-wire in tandem between the Hall sensor and ignition unit.

2. Plug the tachometer connector into the Y-wire.

3. Power comes from the ignition supply, and the tachometer displays RPM automatically.

Important Notes:

• Secure connections to prevent vibration-related disconnections.

• Keep Hall sensor and tachometer wires away from high-voltage ignition wires by at least 30cm.

• If your ignition has a dedicated tachometer pinout, connect the tachometer signal wire directly to it.

• It is recommended to disconnect the tachometer after use to avoid sensor signal interference.