### Startup Codes

**Flying Codes**

Battery level indication at startup ....... Transmitter off or not bound to the quad... Bind mode ......................................... Compass calibration needed .............. Emergency mode (cycle power to reinitialize) ................. Low battery warning 1 (10.9V), every 3 seconds Low battery warning 2 (10.6V), continuous, rapid fl ashing
Re turn to home mode active (solid red) Re turn to home mode active, loss of GPS

(rapid fl ash for 2 seconds, then once every second) En tering Follow-Me mode

(GPS acquired) En tering Smart mode (GPS acquired) En tering AP mode

(GPS acquired) En tering Stability mode

(GPS acquired) En tering Agility mode

(GPS acquired) Smart, AP and Return to Home Modes Stability and Agility Modes Normal operation with GPS lock (all solid) Normal operation with GPS lock (all solid) Normal operation with GPS lock (all solid) Normal operation with GPS lock (all solid) All solid white Solid white front, rear fl ashes active fl ight mode color Normal operation with GPS lock (all solid) Camera tracking with GPS lock (all solid) **Smart Mode**
**AP Mode Stability Mode**  **Agility Mode Return Home**  **GPS Off Follow-Me Mode (ST-10+ only)**  Lo ss of GPS (rapid fl ash for 2 seconds, then once every second) Lo ss of GPS (rapid fl ash for 2 seconds,

then once every second) Lo ss of GPS (rapid fl ash for 2 seconds,

then once every second) Lo ss of GPS (rapid fl ash for 2 seconds,

then once every second)

Lo ss of GPS (rapid fl ash for 2 seconds,

then once every second) GPS lock is required on both the quadcopter and the ST-10+ transmitter for Follow Me Mode to function. **CAUTION:** If you see the LED signal for low battery (10.6V), immediately land your aircraft and recharge the battery. **CAUTION:** Do not attempt to use Return Home with a low battery. 

### LED Codes 100% 75% 50% Dead

**www.KnowChroma.com ©2015 Horizon Hobby, LLC.**  **Blade, Chroma and the Horizon Hobby logo are trademarks or registered trademarks of Horizon Hobby, LLC.**  **Created 04/15 48742 (EN) REFERENCE GUIDE** **NOTICE:** The following procedure has to be completed within 30 seconds after entering compass calibration mode. • Power the transmitter and Chroma TM quadcopter on and face the aircraft pointing North. • Cycle the top left transmitter switch completely 4 times as shown at the right. • The quadcopter indicates it has entered compass calibration mode by fl ashing the LEDs orange. • The LEDs will indicate which direction to orient the quadcopter for each rotation by lighting either one or two motor pods

orange. Turn the quadcopter to point the orange LEDs North, then rotate the quadcopter 360° as shown by the blue arrows below. Complete all 4 rotations of the Chroma quadcopter as shown in the illustration below within 30 seconds. • After the last rotation step, hold the quad level, facing North and check the LEDs.

Green = Ready Red = Repeat Compass Calibration

• Power on the transmitter and Chroma quadcopter. • Place the quadcopter on a fl at, level surface. • While holding the bind switch on the transmitter, cycle the top left switch 4 times as shown at the right. • The Chroma quadcopter will emit a series of slow tones followed by a series of rapid tones, indicating the calibration has started. • Do not move the quadcopter while it performs the accelerometer calibration procedure. • When the procedure has completed, the quadcopter will emit a “happy” tone and the LED will display green indicating the

calibration was successful. If it emits a “sad” tone and the LED displays solid red, repeat the calibration procedure. See the online videos at www.KnowChroma.com for complete calibration procedures. **4X**



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### Compass Calibration Procedure*

**Accelerometer Calibration Procedure*** **Troubleshooting Quick Reference**

For a complete description of the function, capabilities and maintenance of the Chroma quadcopter, refer to the online videos at www.KnowChroma.com. 

### Problem **Solution** Motors won’t start Ensure GPS antenna has clear view of sky and GPS lock has been acquired Check for compass error indication Review start up procedure in manual Blinking yellow led ‘compass error’ indication Move model away from large metal objects or surfaces Calibrate compass (see calibration reference) Steady beeping, motors won’t start Calibrate the DX4 transmitter Center throttle trim (BNF version) Won’t hold position in hover Check GPS antenna mast is extended Calibrate compass (see calibration guide) Calibrate accelerometers (see calibration guide) 

### Binding **Binding the Chroma Quadcopter To Your Transmitter** 1. With the transmitter and quadcopter powered OFF, connect the battery to

the quadcopter. 2. Place the quadcopter on a fl at level surface. 3. Power the quadcopter ON and let it initialize. The status LEDs will remain off. 4. Hold the quadcopter upside down until the status LEDs fl ash blue, indicating it has entered bind mode. 5. Set the quadcopter back upright. 6. On your transmitter, ensure the throttle is in the low position and the

throttle trim is at neutral. 7. Power ON your transmitter in bind mode according to the instructions

included with your transmitter. 8. When the binding process is successful, the quadcopter will emit a quick,

3-beep tone and the LEDs will indicate which fl ight mode is selected. If the LEDs are fl ashing red, the quadcopter is in Return Home mode. Switch to Smart or AP Mode before attempting to start the motors. 9. Place the quadcopter outdoors in the desired starting position

in preparation for fl ight. For instructions on binding with GPS disabled, refer to the online video at www.KnowChroma.com.

*** For information on calibrating the Chroma quadcopter with the ST-10+ Ground Station transmitter, see the online video at www.KnowChroma.com.**  **North**