Log 2015-04-03 : Brushless gimbal

Last year at Bateaux en FĂȘte the Sequana was fitted with a GoPro Hero 3+ Camera to film other models. Even with the shakiest footage edited out there's still a lot of roll and pitch.

Thanks to the suge in Drones/UAVs sales brushless gimbals can know be had for less than $100.

I hence ordered a Tarot T-2D V2 brushless guimbal

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Tarot T-2D V2 2-axis gimbal

Tarot T-2D V2 2-axis gimbal

2-axis BL gimbal for GoPro 3 / 4 cams

The Thing

The Thing

Gimbal will hang from that thing

The Thing

The Thing

5mm plywood all round

Side view

Side view

Lower "platform" will hold RX/BEC/Battery

Back view

Back view

Parts

Parts

Parts laid out for CNC cutting

Tarot T-2D Brushless gimbal

The T2D is a 2-axis brushless gimbal. It features two brushless motors (one for pitch, one for tilt) and uses MEMS gyros/accelerometers.

Refresh rate is 2Khz. 2000 times every second the controller will correct the camera position based on inputs from the gyros.

When you hold the gimbal (with the camera installed) you can "feel" it's working correcting the jittering from your hand and faint humming sound from the motors.

Being only a 2-axis gimbal it won't correct yam jitters but this is much less critical than pitch and roll on a boat (and even on a Drone/UAV).

The gimbal works great on itself but it can also be connected to the RX and lets you control pitch and roll from your TX. There are then two modes of operation:

Positional
Camera behaves like a servo and will go to the requested position and returns to horizontal when you return the stick (or knob) to neutral
Stick Rate Mode
How much input you give on the stick tells the camera how fast it sould move but once input is returned to neutral camera will point where it stopped. Great for nice panning moves but you essentially need have a transmitter hooked to the GoPro so that you can watch the feed as you record.

The T2D can be upgraded and set-up on your computer (USB cable/adapter comes with it).

Haven't hooked it to the computer yet but I might set it up so that there's still some (minimal) roll and pitch so that the footage would still look "boat-like".

The Thing

Most BL gimbals are designed to be installed hanging under a drone/UAV. The T2D is no exception. Hence The Thing.

The mount is some sort of container crane with a piece of 110mm * 45mm plywood the gimbal will be bolted on.

It also features a lower platform to hold the 3S LiPo battery, 5V BEC and 2.4G RX for remote operation.

It will obviously replace the original wheelhouse during filming duties.

Parts will be cut from 5mm plywood on one of the routers from the MCCR's workshop.