Thank you Dynon for the AP-Panel. Much appreciated. I notice in the install manual that the trim system senses a ground condition to activate.
would it be possible to configure sensing a high to activate?
I suspect that you are pulling the pushbuttons up to 5vdc?
the reason for this is safety. While proper installation would preclude a wire from chaffing on structure, it is much more likely that a wire will get shorted to ground rather than aircraft voltage. If a switched hi line gets shorted to ground, it blows the circuit protection. If it gets shorted to voltage, then the circuit is activated all the time, however shorting to ground is the most common occurrence.
I understand that you have the 3 second max run time, but a line could easily be vibrating and creating multiple activations.
It seems that even if you have the line pulled up, it could be configured to see voltage as activate. It may mean putting a pull down resistor, and a current limiting resistor and zener diode on the line to make that work.
Regardless, thanks again for the development work on the ap panel and the knob panel. I am in line to get them as soon as they are released.
would it be possible to configure sensing a high to activate?
I suspect that you are pulling the pushbuttons up to 5vdc?
the reason for this is safety. While proper installation would preclude a wire from chaffing on structure, it is much more likely that a wire will get shorted to ground rather than aircraft voltage. If a switched hi line gets shorted to ground, it blows the circuit protection. If it gets shorted to voltage, then the circuit is activated all the time, however shorting to ground is the most common occurrence.
I understand that you have the 3 second max run time, but a line could easily be vibrating and creating multiple activations.
It seems that even if you have the line pulled up, it could be configured to see voltage as activate. It may mean putting a pull down resistor, and a current limiting resistor and zener diode on the line to make that work.
Regardless, thanks again for the development work on the ap panel and the knob panel. I am in line to get them as soon as they are released.