Servo mode for the Eggtimer Proton and Quasar

[Crayok]

Hey All

Our Kronos team has a project where we are detaching booster pods after burnout. We have a couple methods we are testing but the latest is using the servo outputs from the Proton, unfortunately in the document is says:

The Proton provides support for servos on CH1-CH3, in the Drogue and Main modes. This means that you can only use a servo "on the way down", which is pretty typical of what people want to do with them. You can not use a servo with Airstart mode, since it's not designed for triggering on descent.

So this was bad news for us but the real question, the Quasar does not have the same wording. Does anyone know is the Quasar can activate a servo at a specific time after burnout but before apogee? Or is it the same as the Proton.

Other suggestions? On the test list is a linear actuator. We are hoping to not venture into the pyro side unless our methods prove difficult.

David

 

[cerving]

We don't support PWM servo's on the way up because the window for sending 20 ms pulses in the sample interval is too small, it would be very jerky if it worked at all. Have you thought about just using the servo motor without the attached PWM controller? You might need a driver transistor and a limit switch, but that shouldn't be too hard to figure out.

 

[Crayok]

Thanks Cris, That is what we thought, at least you have servo ability! the servo becomes an actuator without the controls so I think we that is where we will focus.

We don't support PWM servo's on the way up because the window for sending 20 ms pulses in the sample interval is too small,

David