User Manual

Appendix A – SAFE Screen Information
Pre-flight:
• If the SAFE screen says ERROR, you must fix that error before you can arm it.
• You will see the actual error on the display.
• You may have to power cycle the KK2.1.X to clear an error after fixing it.
• Top right displays the profile being used (P1 or P2) or tells you which stick scaling and PI
profile you are using (PI1 or PI2).
• It will tell you if Self Level is on or off.
• The Battery (Batt) voltage will be displayed if you have connected the flight battery +ve to
the KK2.1.X battery monitor pin (pin closest to the edge of the board).
• Temp is the MPU6050 internal temperature.
• Roll and Pitch Angle will appear after arming and disarming. They display the angle of the
KK2.1.X after arming and disarming.
• If you have the Alternative SAFE screen layout selected in Misc Settings 2, it displays the last
Motor Layout selected (this is just a guide as you may have changed the settings in the Mixer
Editor).
• Pressing button 4 takes you into the MENU.
Post-flight:
• If the SAFE screen says ERROR, you must pay attention.
• You will see the actual ERROR on the display. It will most likely be “Error: no yaw input”
which means you had a receiver failure during flight.
• The top left corner will display a number if the KK2.1.X code took longer than expected to
execute during flight, the number of times this happened will be displayed. This shouldn’t
happen. If it does, it could indicate a fault with the board.
• The Roll and Pitch Angle will appear.
• Pressing button 4 takes you into the MENU.