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GREMSY T7 User Manual

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Summary of Contents for GREMSY T7

  • Page 2: Revision History

    REVISION HISTORY REVISION DATE DESCRIPTION User Manual Mar 10 2020 LEGEND Notes are used to highlight special operating conditions or steps of a procedure. NOTE Warnings are used to highlight procedures which, if not strictly observed, may result in personal injury or loss of life. WARNING Tips.

  • Page 3: Table Of Contents

    Gremsy T7 I/O Connectors Hyper Quick Release Connectors & Pinouts Camera Tray Connector & Pinout What’s In The Box hdmi Hyper Quick Release Mounting Hyper Quick Release Connect Disconnect Powering Up The Gremsy T7 Step 1 Step 2 Step 3 Status LED Indicator...
  • Page 4 Operation Modes Gremsy T7 Has 2 Operation Modes Gremsy T7 Supports Working Operation Swithching Between Modes Installing Software / App Using USB/BLUETOOTH Connection Using USB Connection Using BLUETOOTH Connection BALANCING Mounting The Camera Tilt Axis Front-Back Balance Tilt Axis Vertical Balance...
  • Page 5 Hold Strength Gain Default Settings Follow Mode Settings Speed Smooth Window Tilt Lock Airborne Rotation Limit Up Limit Down Limit Window IMU Sensor Gyro Calibration Accelerometer Calibration REMOTE CONTROL SBUS/PPM Settings Receiver Connection Channel Setting JR/SPEKTRUM Settings JR / Spektrum Satellite Receiver Connection Channel Settings UPGRADING FIRMWARE How To Upgrade...

  • Page 6: Getting Started

    GETTING STARTED...

  • Page 7: Introduction

    GETTING STARTED INTRODUCTION The new T7 features HDMI Quick Release as well as new I/O design and the ability to start up in 2 seconds. Moreover solid and clean design allow durability and ease of setup with plenty of cameras up to 7 lbs.

  • Page 8: Features

    PLUG & PLAY Say goodbye to complex setups and time consuming process. The T7 provides an easy one step plug and play installation that takes only 5 seconds to complete. NEW I/O DESIGN...

  • Page 9: Heated & Temperature Controlled Imu

    0.2 degrees Celsius accuracy. HIGH PERFORMANCE gMotion Controller, designed and made by GIMBAL CONTROLLER Gremsy based on a 32 bit high performance ARM microprocessor providing fast response and accurate calculation. Sensor data and motors correction are updated as fast as 2000 times per second to enable incredibly smooth footage.

  • Page 10: Built For Aerial Work

    GETTING STARTED BUILT FOR AERIAL WORK The T7 has a lot of nice features that enable users to apply it not only for aerial inspection and mapping but also for high end aerial cinematography.

  • Page 11: Specifications

    GETTING STARTED SPECIFICATIONS Product Name Gremsy T7 System Type 3-Axis Digital Gyro-Stabilized Weight 4 lbs / 1860 g Camera Cage (Standard) (W X L X H) 150mm x 130mm x 180mm Construction All Aluminum Input Voltage 15 – 52V Working Current Static Current 300mA @14.5V...

  • Page 12: Gremsy T7 Mechanical Components

    GETTING STARTED GREMSY T7 MECHANICAL COMPONENTS 01. HDMI Hyper quick release 07. Tilt motor 02. Pan motor 08. Tilt top bar 03. Pan adjustment 09. Camera plate 04. Roll motor 10. Tilt front- back adjustment 05. Gimbal controller 11. Tilt vertical adjustment 06.

  • Page 13: Gremsy T7 I/Oconnectors

    GETTING STARTED GREMSY T7 I/O CONNECTORS HYPER QUICK RELEASE POWER: to get power directly from CONNECTORS & PINOUTS external batteries of the drone or other power supply. Voltage input range from 15V to 52V and is down converted to a stable 14.5V by the internal circuit to provide power...
  • Page 14 GETTING STARTED SBUS/PPM: To interface with SBUS/PPM receiver. AUX: There are S1, S2, S3,...,S8,S9 optional signal (0.25A max) for users to connect to other devices such as AV signal or camera trigger...This port is internally connected to AUX port on the camera tray. Connector type: JST SM10B-ZESS-TB USB: to interface with computers or upgradingfirmware.
  • Page 15 GETTING STARTED JR: to interface with JR/SPEKTRUM satellite receiver. Connector type: JST S3B-ZR HDMI: HDMI video output from the camera. Connector type: Micro HDMI...

  • Page 16: Camera Tray Connector & Pinout

    GETTING STARTED CAMERA TRAY AUX: There are S1, S2, S3,...,S8,S9 CONNECTOR & PINOUT optional signal (0.25A max) for users to connect to other devices such as AV signal or camera trigger...This port is internally connected to AUX port on the Hyper Quick Release.

  • Page 17: What's In The Box

    WHAT’S IN THE BOX 01. GREMSY T7 GIMBAL 02. HDMI HYPER QUICK RELEASE 03. CAMERA TOP CROSS BAR 04. CAMERA PLATE 05. GREMSY T7 CABLES & TOOLS A. Micro USB Cable E. Sbus Cable B. Power Supply Cable F. Auxiliary Cable C.

  • Page 18: Hdmi Hyper Quick Release

    GETTING STARTED HDMI HYPER QUICK RELEASE MOUNTING HYPER QUICK Using 32mm square M3 pattern to mount RELEASE the top part onto the frame or damping isolator. CONNECT STEP 1: The marks on the top part and bottom part must be aligned. The button on the ring should be aligned with the unlocked icon as shown in the first picture.

  • Page 19: Disconnect

    GETTING STARTED DISCONNECT STEP 1: Press and hold the button. STEP 2: Rotate the ring counterclockwise. STEP 3: When the button aligns the unlock icon, the T7 can be detached from the top part of Hyper Quick Release.

  • Page 20: Powering Up The Gremsy T7

    After connecting to the power supply, the gimbal will perform a series of alignments, self tests, which last about 2 seconds and will determine the status THE GREMSY T7 of the gimbal, indicated by the Status LED color. During this time, don’t touch the gimbal or camera.

  • Page 21: Status Led Indicator

    GETTING STARTED STATUS LED INDICATOR STATE LED STATUS DESCRIPTION Blink Low Battery Solid System Error (Motor or IMU) Blink Calibrating Solid System Boot Blink System Ready Blink Lock Mode Solid Follow Mode Blink Remote with Lock Mode Solid Remote with Follow Mode Blink Auto-tuning in process Blink...

  • Page 22: Operation Modes

    GETTING STARTED OPERATION MODES GREMSY T7 HAS 2 LOCK MODE: is a stabilization mode where the camera maintains orientation OPERATION MODES independently of the rest of the gimbal and the orientation can be changed by an external control signal from remote control.

  • Page 23: Working Operation

    GETTING STARTED WORKING OPERATION Gremsy T7 has 2 working operations: Normal and Inverted. After powering up the gimbal , it will automatically detect if the gimbal is in inverted operation or normal operation based on pan motor position. During working, switching to another working operation made easy by changing pan motor position, the gimbal will automatically detect new types of working operation.

  • Page 24: Swithching Between Modes

    GETTING STARTED SWITHCHING BETWEEN MODES Using function button PRESS TIMES MODES Once time Turn motors ON 2 times Lock mode 3 times Follow mode Hold 3 seconds Turn motor OFF Using mode channel on remote control POSITIONS MODES High Follow mode Motors ON Midle Lock mode...
  • Page 25 GETTING STARTED Using software/application If there is a remote control signal, changing modes or turning motors on/ off by other methods such as using the function button or software will not take effect because the remote control signal has the highest priority NOTE and override the command.

  • Page 26: Installing Software / App

    GETTING STARTED INSTALLING Mobile apps are available in App Store and Google Play SOFTWARE / APP App name: gTune Searching: “gremsy gtune” Desktop software Download at: www.gremsy.com -> Support -> Product Support -> Gremsy T7...

  • Page 27: Using Usb/Bluetooth Connection

    GETTING STARTED USING USB/ To configure and monitor data of Gremsy software/app either USB/Bluetooh connection is required. BLUETOOTH CONNECTION USING USB CONNECTION Make sure the Silab USB driver is already installed. The driver can be found at: www.gremsy.com -> Support -> Product Support -> Gremsy T7...

  • Page 28: Using Bluetooth Connection

    Bluetooth icon should appear on the device’s status bar. 2 - Turn ON the gimbal and run the app. After switching to Bluetooth, the app will begin scanning for Gremsy Bluetooth integrated gimbals. If only one gimbal is found, it will be connected automatically.
  • Page 29 GETTING STARTED...

  • Page 30: Balancing

    BALANCING To achieve the best performance from the T7, proper balancing is necessary. Accurate balance is critical in shots where the gimbal will be subjected to extreme movements or accelerations. There are 3 axes that need to be precisely balanced prior to powering up the gimbal.

  • Page 31: Mounting The Camera

    BALANCING MOUNTING THE Use two 1/4”-20 screws to secure the camera to the camera plate and camera top crossbar, then put the camera to the gimbal and tighten the top bar knob. CAMERA...

  • Page 32: Tilt Axis Front-Back Balance

    BALANCING TILT AXIS When the proper front-back balance is achieved, the camera will stay level when you remove your hands. FRONT-BACK BALANCE 1. Loosen the thumb screw on the right 2. Tighten the right thumb screw to side of the camera plate and the top lock the camera and camera plate in bar knob Then, gently slide the camera position.

  • Page 33: Tilt Axis Vertical Balance

    BALANCING TILT AXIS VERTICAL When the proper vertical balance is achieved, you can rotate the camera in any angle and it will stay at that position. BALANCE 1. Rotate the tilt axis so that the lens 2. Tighten the thumb screws. Check is pointing upward.Then, loosen both the number markings on both vertical vertical adjustment thumb screws,...

  • Page 34: Roll Axis Balance

    BALANCING ROLL AXIS BALANCE When the proper left-right roll balance is achieved, the camera will stay level when you remove your hands. 1. Loosen the thumb screw on the left 2. Tighten the left thumb screw and of the camera plate and also loosen the top bar knob to lock the camera in the top bar knob, then gently slide the position.

  • Page 35: Pan Axis Balance

    BALANCING PAN AXIS BALANCE Tilt the gimbal about 20 degrees from the verticality, identify if the gimbal is front heavy or back heavy. Slide the pan axis slider until the camera does not swing. 1. Loosen the thumb screw, then gently 2.

  • Page 36: Software - Tuning

    SOFTWARE - TUNING After the camera is balanced on the Gremsy, it’s time to fine tune some parameters for best performance.

  • Page 37: Stiffness Tuning

    SOFTWARE & TUNING STIFFNESS TUNING Stiffness setting has a significant impact on the performance of the T7. This setting adjusts the degrees to which the gimbal tries to correct for unwanted camera movement and hold the camera stable. The higher you can run the setting without vibration or oscillation, the better.

  • Page 38: Step 01 - Tilt Stiffness

    STEP 02 - ROLL STIFFNESS Slowly increase this setting until you feel an oscillation in the roll axis, then reduce the setting until the oscillation subsides. Pick the T7 up and make sure there is no vibration when you move the gimbal around.

  • Page 39: Auto Tuning

    SOFTWARE & TUNING AUTO TUNING The Auto-Tune function provides automatic adjustment of each motor’s stiffness value to find a good setting, the process will take around 1-2 minutes. Please turn the motor ON prior to starting Auto-Tuning. The settings found by Auto-Tuning are usually good to start with however, it’s recommended to manually reduce stiffness if there is an oscillation in a specific axis or increase stiffness in case if it is too low.

  • Page 40: Filter

    SOFTWARE & TUNING FILTER The purpose of the filters is to eliminate noise and vibration due to structural resonances in the camera, lens, or gimbal. Setting the filters too high or too low can cause signal disturbances that can reduce the overall stabilization. GYRO FILTER Defines the strength of the filter applied to Gyro sensor output.

  • Page 41: Expert / Advanced Settings

    SOFTWARE & TUNING EXPERT / ADVANCED There are some expert parameters that normally do not need to be adjusted. Leave these parameters at default settings unless they are required for SETTINGS troubleshooting. If “Auto power adjustment” is enabled, “Hold strength” will be the minimum power HOLD STRENGTH level required for the corresponding axis.

  • Page 42: Default Settings

    SOFTWARE & TUNING GAIN Defines how fast each axis will return to commanded position. To reload default expert settings just press “Default” in the expert menu. DEFAULT SETTINGS TILT ROLL HOLD STRENGTH GAIN AUTO POWER ADJUSTMENT: ENABLED...

  • Page 43: Follow Mode Settings

    When the movement is out of the window zone, the camera starts to move. Within the window zone, the camera maintains its direction. TILT LOCK If this option is selected, the tilt axis will maintain its angle and only be controlled by remote control. AIRBORNE This feature is not available on the T7.
  • Page 44 SOFTWARE & TUNING...

  • Page 45: Rotation Limit

    SOFTWARE & TUNING ROTATION LIMIT Travel of Tilt and Roll axis can be limited using UP LIMIT and DOWN LIMIT. The Pan axis keeps the ability to pan 360 degrees itself. UP LIMIT Set the up limit for Tilt or Roll axis (in 1 degree unit). The default values are -90 for Tilt and -45 for Roll.

  • Page 46: Imu Sensor

    SOFTWARE & TUNING IMU SENSOR The IMU sensor used in the T7 is a combination of a high precision 3 axis gyroscope sensor and a 3 axis accelerometer sensor. IMU board is enclosed in a weather proof case and being heated where the temperature inside is controlled around 50°C with 0.2°C accuracy.

  • Page 47: Gyro Calibration

    (below -20 C or above 50 C) please re-calibrate the gyro. CALIB AT STARTUP: this feature is not necessary on the T7 After Gyro Calibration, Gyro Offset X, Y, Z will change to a new value depending on the temperature. NOTE...

  • Page 48: Accelerometer Calibration

    SOFTWARE & TUNING ACCELEROMETER Do not use this function, please contact Gremsy Support Engineers. CALIBRATION Accelerometer sensor was calibrated properly at the factory to achieve an accurate horizon level with special and precise equipment. Users do WARNING not need to do this unless it’s required for troubleshooting.

  • Page 49: Remote Control

    REMOTE CONTROL T7 supports SBUS , SPEKTRUM and PPM receivers. There are some parameters to be aware of before assigning channels to the receiver. SMOOTH: increasing this number will smooth out the movement of the corresponding axis but will also cause a delay.

  • Page 50: Sbus/Ppm Settings

    REMOTE CONTROL SBUS/PPM SETTINGS RECEIVER CONNECTION Connect SBUS/PPM receiver to the Hyper Quick release as shown below The receiver must be connected to correct wires. The SBUS/PPM port has 5V output to power the receiver, please do not use external power supply to power the receiver at the same time.

  • Page 51: Channel Setting

    REMOTE CONTROL CHANNEL SETTING There are 6 channels to assign: MODE, TILT, ROLL, PAN, TILT SPEED, PAN SPEED Assign MODE channel first then follow the order above because MODE channel is used to change operating modes of the gimbal and should be assigned to a 3-position switch as follows: Switch at high position: FOLLOW MODE , MOTORS ON Switch at middle position: LOCK MODE , MOTORS ON...

  • Page 52: Jr/Spektrum Settings

    REMOTE CONTROL JR/SPEKTRUM SETTINGS JR / SPEKTRUM SATELLITE Connect satellite receiver to the JR port on the Hyper quick release as shown in RECEIVER CONNECTION the picture. Make sure satellite receiver is already bound to the transmitter (RED led is solid). CHANNEL SETTINGS Choose 10 bit or 11 bit type resolution on the software and assign proper channels as per SBUS settings.

  • Page 53: Upgrading Firmware

    UPGRADING FIRMWARE Only USB connection allows upgrading firmware. Refer to Section “01. GETTING STARTED” for USB connection. Make sure Silab USB driver is already installed. The driver can be found at: www.gremsy.com -> supports -> product support WARNING...

  • Page 54: How To Upgrade

    UPGRADING FIRMWARE HOW TO UPGRADE 01 - Power on the T7. 02 - Connect USB cable from T7 controller to Mac/PC. 03 - Run the gTune Desktop software. 04 - In the software, select “Serial” option on “connection” tab. 05 - Select the port in the list.

  • Page 55: Troubleshooting

    TROUBLESHOOTING...
  • Page 56 Status LED is solid white after Excessive gyro drift Re-calibrate start up Stiffness setting is too high Reduce stiffness Gremsy T7 has oscillation in Thumbscrew/top bar nut is not Check tightening one or more axes tightened Camera mounting is not stiff...
  • Page 57 TROUBLESHOOTING Gremsy gimbal seems to be Gyro sensor is drifting too much Re-calibrate gyro drifting Motors seem to be weak Stiffness is too low Increase stiffness Auto-power adjustment is not Check in Expert menu if Auto-power enabled adjustment is enabled or not...

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