2 Channel Servo Override Hardware

Posted by: GizmoMan in Hardware Descriptions

Tagged in: technology , hardware , gizmos , description , articles

GizmoMan
This is an explanation on how to connect and use the 2 Channel Servo Override Gizmo. Any questions regarding the setup of this device can be answered here.


 







This Gizmo was requested from a member of our community that is working with UAV (Unmanned Aerial Vehicle) prototypes and would be used as a Safety Switch to switch from Autopilot controlling the Servo Motors to the RC Receiver in case something goes wrong during testing and development.
As the name says, this is a 2 channel Servo Override Gizmo. This means that only 2 channels from the RC Receiver and from any other source can be connected and switched between each other.


As you can see from the image above, there are 2 Inputs with 2 channels on each side of the Gizmo which are both Male Servo connectors marked as In1 & In2.

In order to switch from one input source to the other the SW channel is used. Normally this channel would be connected to an extra output of the RC Receiver and would be controlled by one of the available switches of the Remote Control.

The values that would switch from One input to the other are different for each RC Unit but in general values would be:

1. -150 - (-20) would be Input1
2. 20 - 150 would be Input2

As a Final Step the 2 Female connectors are used to connect the 2 Servo Motors to the Gizmo and operate from the selected channel.

The Device is wrapped in a Black Heat Shrink and emits a RED LED light from the side when powered on.

NOTE: Please make sure that if using 2 different sources for input with 2 separate Power supplies, make sure to disconnect both Power lines on one of the inputs as shown on the illustration below since all the Power is distributed evenly to all connections of this Gizmo.


Preferably disconnect the Power source from the device that is NOT your RC receiver since you also would use the SW connector to switch the 2 inputs from it.

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