More progress to report. Weather here has turned cold and it has even been snowing lately, which is actually good news in that I don't have anything ready to throw in the air anyway!
I thought about it some more and went ahead and ordered an new Muliplex Twin Star II. I started looking at the aircraft configurations and thought it might be easier to start out with something that you had already created. The kit arrived a couple days ago and I haven't even had a chance to open it up. I also went ahead and ordered a Panasonic ToughBook with Debian already installed! I have had real good luck with the old Dell that I found and the system I installed, but I am actually starting to envision a time when I have a plane in the air and I thought I would be happier if I knew the laptop wasn't going to give out on me! Finally, I ordered the MaxStream 9XTend-PKG-U and the 9XTend OEM RF Module. They arrive yesterday. I have been looking at the pinouts on the RF Module and been comparing those with the pinouts on the Tiny and am a little confused. I think I could figure it out, but I thought I would write just to be safe.
As I understand this, the GPS is all internal on the board and I don't need to plug anything in, so that is taken care of. There are 7 servo headers although I will be using only 4 or maybe 5 with the Twin Star, I suspect you split the ailerons using two servos, but I haven looked that up yet. I will probably use one more servo connection before it is all over so that I can activate the camera shutter using an IR emitter. The RC header goes to the ppm radio receiver. The Analog header accepts the leads from the IR horizon sensor. I haven't actually looked at this yet either, but that makes sense to me at this point. My question comes regarding the two remaining serial ports. It looks like Serial 1 is to be used by the ISP Serial Bootloader. I even found a picture that someone provided that shows this port connected to the PC USB cable. I am going to assume then that the RF Module is connected to the ten pin header on Serial 2 as shown in the pinout diagram. That would mean that the Serial 1 port is left open most of the time unless it is physically connected to a computer through the USB cable.
So, assuming I have this right thus far, here is my question! The MaxStream RF Module has a straight out "20-pin mini connector". But it only has 11 pins that are actually used, and most of those aren't required. I am having trouble figuring out which pins on the RF Module goes to which pins on the tiny. The naming convention used to describe and document the two devices are just a bit different. Pin 1 and 2 on both are gnd and volts respectively. And it looks like pin 5 and 6 on the MaxStream (Data In, Data Out) line up with pins 5 and 6 on the Tiny (Data Out, Data In), but to be honest I am not sure. And that still leave 7 pins coming out of the RF Module and only 6 pins left on the Tiny. Maybe if someone has a minute they could clarify this issue for me.
Thanks one more time for all of your help.
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Ill jump in and say that Jeremy can provide you with an exact pin out. I do know that we use only 4 wires to the Tiny, the ones you just described. It would be nice to use CTS and RTS in the future(the Tiny 2.0 has these) so we could send commands to change settings on the modem during flight(IE change power levels or channel hopping pattern. Dont fear, as long as Jeremy sees this email he should be able to get you the pin out.
PS. where did you get a toughbook with debian preinstalled?
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