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DetrumTech ISTONE-All DSM & S-BUS Stabilizer and 3-in-1 Program Card Combo

This unit from Detrum supports Gyro Off, Normal, Aerobatic, and Auto-balance (Safe) Modes, compatible with DSM, S.BUS, and PWM receivers. You can set the programmable items via a 3-in-1 program card.


S-BUS Stabilizer, 3-in-1 Program Card Combo

From Detrum Tech:

ISTONE-AII is a 6-axis Gyro & Stabilizer for airplane, suitable for normal wing, flying-wing, and V-tail airplanes. It is used to connect with the receiver to control the flight, supports Gyro Off, Normal, Aerobatic, and Auto-balance (Safe) Modes, compatible with DSM, S.BUS, and PWM receivers. You can set the programmable items via a 3-in- 1 program card.

The 3-in-1 program card is used to set the programmable items for ESCs and stabilizers and measure the voltage for Li-Po battery. Its friendly LCD interface makes the programming and measurement easy.


ISTONE-AII Stabilizer:

  • 32-bit high-performance ARM MCU, 6-axis sensor chipset
  • Original attitude stabilization algorithm and control algorithm
  • Support normal wing, fly wing, and V-tail airplanes
  • Support mode switch via MODE channel, can switch between different modes
  • Four flight modes: Gyro Off Mode, Normal Mode, Aerobatic Mode, and Auto-balance (Safe) Mode
  • Set the programmable items (aileron/roll/rudder gain, level offset, flight mode, etc.) via 3-in- 1 program card
  • Support DSM, Futaba’s S.BUS and PWM input signals
  • Mini dimension, supporting different mounting directions (face up, down, left, and right) 3-in- 1 Program Card:
  • Connect with the ESC to set its programmable items. It is applicable for Skylord
  • Advanced series brushless aircraft ESCs, Volcano series brushless car ESCs, etc.
  • Connect with the stabilizer or sport receiver (with a built-in stabilizer) to set its programmable items. It is applicable for ISTONE-AII stabilizer, MSR66A sport receiver, etc.
  • Work as a voltmeter to measure the voltage of the whole battery pack and each cell. It is suitable for 2S to 8S Li-Po battery.

Quick Start

Before installing, make sure:

  • All the surfaces are well connected to the servos by the linkage rods.
  • Install the receiver and bind it to your transmitter in advance.
  • All channel direction and trims are set to the correct position.

Follow these steps to complete your initial installation.

  • Power on the transmitter and create a new airplane model. Assign a 3-position switch for the flight mode control and make sure the switch does not have other function.
  • Mount the ISTONE-All on the airframe and connect its required input and out wires.
  • Place the airplane on the ground and power it on, the LED on ISTONE-All will start fast green flashing, which means it is calibrating the gyro and the sticks, don’t move the airplane and the sticks during this period. After a successful initialization, the LED displays the current flight mode.
  • After a successful initialization, use the program card to set the programmable items (mounting direction, wing type, etc.).
  • Switch to Gyro Off Mode. Adjust the neutral position for all servos. Check the movement direction of the servos by moving the stick one by one. If the servo in an opposite direction, reverse it on your transmitter (for details, please refer to the instruction manual of the transmitter).
  • Switch to Normal Mode, check the gyro direction one by one, and reverse it if the gyro reacts in a wrong direction.
  • Use the program card again to set the programmable items (assigning the desired flight mode to the 3-position switch, adjusting the gain, etc.) After completing all the settings, begin your first flight.


  • There are four different mounting directions: face up, face down, face left, and face right, as shown in the figure. Please use one of the provided double-sided tapes to mount the ISTONE-All on the plateform inside the airframe.
  • Remember that the installation position should be close to the receiver and the center of gravity, the heading direction must be the same as the airplane’s heading direction and the edges of it are all parallel with the corresponding axes of the airplane

Flight Mode

  • Gyro Off Mode (OFF): Choose this mode to disable the gyros for all channels. The airplane will be completely under the control of the transmitter, act the same as without an ISTONE-AII. Generally, it is only used to test.
  • Normal Mode (Normal): On this mode, the gyro will sense angular velocity on each axis and make a momentary reaction. The normal mode is suitable for all types of airplane. It can effectively improve the stability of your airplane, especially on a windy day.
  • Auto-Recovery Mode (Safe): Choose this mode to lock the tilt angle on pitch and roll axis. When operating in this mode, the airplane will maintain level flight automatically.
  • When switch it to this mode from any other modes in an emergency, the airplane will recover to the level flight automatically, which it is known as one-click rescue. This mode is suitable for the new beginners or the FPV (First Person View) applications.
  • Aerobatic Mode (Aerobatic): By adding the attitude hold function to the gyros, it will lock the airplane to its previous attitude if there is no command sent from the transmitter in a flight. This mode can effectively help you to accomplish an aerobatic flight. Operate the sticks in this mode, ISTONE-AII won’t affect the operation and can improve the stability of the airplane. Once release the sticks, ISTONE-AII will save the previous flight attitude and lock the airplane to this attitude.


  • ISTONE-AII Stabilizer:
  • Main Controller: 32-bit MCU
  • Sensor: 6-axis gyro
  • Gyro Scale Range: -2000dps ~ +2000dps
  • Accelerometer Scale Range: -4g ~ +4g
  • Input Signal: PWM, Futaba S.BUS, DSM
  • Output Signal: PWM (71.4Hz)
  • Input Voltage: 4.8V ~ 7.4V
  • Operating Temp: -20℃ ~ 70℃
  • Size: 36.5mm*29.4mm*12.6mm
  • Weight: 10g
  • 3-in- 1 Program Card:
  • Size (L*W*H): 52.0mm*85.6mm*17.6mm
  • Weight: 45g
  • Input Voltage: 5V~12V
  • Interface: Micro USB, ESC interface, Li-Po battery interface
  • Packing List
  • ISTONE-AII Gyro & Stabilizer ×1
  • 3-signal wire ×1
  • Anti-shock double sided tape ×2
  • Single-signal wire ×2
  • 3-in- 1 Program Card ×1
  • Micro USB Cable ×1


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Oct 27, 2017, 09:49 PM
Team Spektrum FPV
aaronredbaron's Avatar
Last edited by aaronredbaron; Oct 27, 2017 at 09:59 PM.

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