FMA FS-8 Rx and Picopilot

[icebear]

Has anyone tried this combination? FMS FS-8 receiver + Picopilot (NAV2A)

Because I want failsafe I got a FMA FS-8 receiver, but when exchanging my Hitech Supreme 8, I cannot get the channel 5 "enable" to work with the Picopilot. The piocpilot is enabled all the time and it doesn't respond to the ch 5 gear switch at all. However when connecting a servo to ch 5 it works perfectly.

Anyone have any ideas?

/Icebear

[icebear]

Apparently the FS-8 receiver has low level logical output (3-3.3v) so a servo buffer that boost the signal would probably work!
Since the FS-8 is a great receiver with failsafe, I have ordered some servo buffers (for ENABLE, RUDDER and THROTTLE) to test it.

/Icebear

[JettPilot]

Get the Jomar 8 channel servo opto isolator. It does all 8 channels with one unit, eleminates any problems you will ever have with long leads, etc. etc., is very high quality, and is less expensive than buying 3 cheap buffers...

[kd7ost]

Servo Buffers are made from CMOS 4049 and some are High Speed 74XXX series CMOS chips. These are robust and are as reliable and dependable as the RC receivers we use. I use a Jomar opically isolated 8 channel unit and it too is of the highest quality. But my plane is big enough to carry icebears plane. In fact big enough to carry several of his planes. He is buying what he needs to get the job done and is not taking a cheap way out. He is taking the logical way for his small electric.

Dan

[icebear]

So the 8 ch Jomar is bulky? Three buffers does weigh a bit too but maybe not as much as the 8 ch unit. Thanks for the tip anyway!

Dan, you are quite right - I am chasing every gram... Wonder if my SuperMiss will fit in your plane, though.. :)
/Bjorn

[kd7ost]

Well,

Maybe we would have to re-kit it to actually get it loaded inside the cargo bay. :eek: I'm meant I could carry the weight.

You know, the chip I mentioned is has 6 inverters in one. If all you need to do is level shift three pulses, you could wire your own chip. Put each signal into one gate input, then another. Then take it out and send it on to the servo. It would only take two gates per servo signal to do the job. You can combine all three into one chip.

Dan

[icebear]

Ah, I see - didn't get that you gave me a DIY hint! Thanks! I'll test the "Cermarks's" I've ordered, and if it works, I'll consider wiring my own to save weight.
Still playing around with the PDC-10 for now. It works fine but I need to do some more adjustments. Right now it has my plane steering like it had to many swedish beers... but it DOES navigate!
/Bjorn

[kd7ost]

Right now it has my plane steering like it had to many swedish beers /Bjorn

Hey, I'd like to try that myself. :D

Dan

[typicalaimster]

How do you think I come up with some of my designs ;)