just joined the forum today, as I am set on installing ardupilot mega into my aircraft but just want to try and clarify a few things before hand. As I live the UK I want to order everything I need in one go and from as fewer sites as possible as I will have to pay inport TAX and VAT.
1) Looking to purchase: ardupilot mega
ardupilot mega IMU shield/oilpan Rev-H (with pins)
triple axis magnetometer Rev 1.1
A selection of cables for my desired configuration
I want to have airspeed as well so would that require 'ardupilot shield V2 (MPXV5004DP)' and if so what are the units of measurement.
Is there anything else that you would recommend?
2) I already have eagletrees system installed for FPV (http://www.dpcav.com/xcart/product.php?productid=16480&cat=263&...). Would it be ok to daisy chain this between the R/C rx, eagletree, ardupilot, then to the servos. Also could I use the same gps module from my FPV system to feed the ardupilot using a splitter cable.
3) what is the best option for 2-way telementry, bearing in mind that I use 2.4ghz for R/C and 900mhz for FPV (although I may need to change this as this is the same frequency that Uk mobiles work on)
Sorry for such a long post, but i'm getting confused as to how to overcome my problems.
All help much appreciated.
Gentlemen, I too ordered the APM (arduPilot Mega) and IMU shield "oilpan" and a ardupilot shield v2, (MPXV5004DP)'. I have been searching for "days" it seems to find out how I was going to cable up my shield v2 airspeed sensor to my APM and oilpan to no avail. Glad I found this post!!! Now I know what to order for my airspeed addition.
Thanks for the forum and everyones posts and useful info
Larry (working on fpv and autopilot for failsafe return)
MPXV5004DP airspeed sensor works fine with APM/Oilpan.
(Oh and your calling it an ardupilot shield v2 which is an incorrect description.)
Thanks for your info its been very helpful. I found the list I made in my original post from the same link that you sent me. I only posted it in order to clarify what I was planning to order, as I thought I needed items that, as it turns out I didn't such as the FTDI cable - although I now see the reason for this.
would the fact that I am operating my R/C equipment on the 2.4ghz frequency have any implications on running the telementry on the same frequency, as I have read mixed theories. Although my understanding was that 2.4ghz R/C equipment was supposed to channel hop to prevent interference.
Have been reading your posts with james regarding the Xbee 868's. If you have not already ordered them, then I would put my name down for one
I have read some posts about xbee 868 and xsc, but I am not sure about disadvantages which each one.
I have read about 868 duty cycle problem, cooling, etc. As far as i am concerned, it seems duty cycle is solved with 9600 limit transfer. Other issue is cooling: maybe place it near of motor would be a solution.
About XSC, i am not sure, but it seems to be similar to 868 respecting rate transfer 9600.
Anyway, I need a range of 20km more or less, receive plane sensor data to the ground station, and send control data from ground station to the plane. Will be 9600kbps enough?
Which xbee would be better, 868 or xsc?
Thank for your answer, Johann,
OK, but with 2,4 I would work with no long range, wouldn't I? The main problem is that I need to send and receive data from xbee ground station to xbee air working in 20km range, more or less.
So, would 433 mhz be a better choice? Is there ane xbee working in 433 which i can use with ardupilot?
Thank you again