Left_Seat

First, understand BOTH device would not be used on the same plane at the same time. ATT is for training you to handle one engine out conditions and the Hamster would automatically handle one engine out conditions. Both are an attempt to handle the pearls of an engine out conditions. The ATT teaches YOU to handle the engine out, the Hamster handles the engine out WITHOUT YOU.

The ATT and the Hamster requires only the addition of one unused channel space on the receiver - the channel used for Aux (gear, flaps, spoilers... any unused channel you can tie to a switch or knob). The ATT will use the engine throttle servo channels and then send those servo commands from the ATT to the throttle servos. The Hamster will use the rudder servo channel and then send those servo commands from the Hamster to the rudder servo.

So, the only additional connections (extra channel ports used) is to the AUX channel, used for on/off control.

BTW, as mentioned before, we are trying to come up with a Hamster that will run full-time and not need an AUX channel to turn it on or off - but that is still in the works. Using the ATT without an AUX channel input would not make any sense.