Also watch out for the thermophiles sensors (the new FMA sensor has different ones), if they are different the gains must be set differently too. So you will have to put both sensors under the sky and see if the absolute differential is equal in both... If yes you are done..
Go and click in the "Other Infrared sensors" and over already did the work for us. All the deal is in the resistors R2 .8Mohm and R3 510 ohms (for one axis) and R5 .8Mohm and R6 510 ohms (for the other axis). Those resistors are the ones that set the gain of the Non-Inverting Opamp: you can find a gain calculator here: http://www.pic101.com/opamp_calc.htm. Paparazzi uses .82 Mohns and 1kohm instead. You can check it here: And click in hardware support for this board to check out the schematics, see the opamp resistors, those resistor are the one that must be equally. I mean i suggest to change the resistor of both boards in order to make it 100% perfect and the resistors must be 1% or less of tolerance (the blue magical ones). good luck!
Mainly the Paparazzi, dean and FMA sensor are exactly the same components (who copy who?). But the only difference is the resistor gains (don't worry about the capacitor, all could .1uF)...
I can solder like a mad man.. so I am all up for changin resistors. I just need to know what ones to order and where they go ;-) I wish I could get to the point that all I had to do is tweak settings like PID gains etc because i have enough experiance with the MK that will help me here. I just want the hardware happy first. so Jordi hit me with the hack and I will do it / provide pictures. I would prefer the hardware hack so that I can continue to use the software that everyone else using cause I can't program "hello world" (kidding but not far off)
They are several solutions for the xyz sensors (IMU LOL!):
you can change four 0806 huge resistors in the fma xy sensor or change two 0603 resistors in the z paparazzi sensor. You can also compesate the diferece of gains by software. I can give instructions to hacks the sensor (I love hack). ;-)
I will understand if more than 50% people drop the towel in this project. People do believe autopilots are plug and play. They are quite wrong. I been playing with profesionnal autopilot like cloud cap and micropilot and both came with thousens of options that must be tune exatly like ardupilot. Including PID gains, servos ranges, mixing, etc. That's good for me because in the near future I will have a lot of job tuning ap for others. Also ardupilot is open source and is trying to be as flexible possible (that's is wrong too), this flexibility will cause a lot more problems (imagine it like mac and windows, we are windows of course with a little bit of Linux ;-) ). In one post made here time ago mentioned all the skills requiered in the uav bussiness, including:
pilot skills, electronics skills, programming skills, math and physics skills and even more. But if you have a weak point here is the place where you will improve it.
I have most of it working....XY and throtle most deffinately works... Not sure about the Z....But the rudder on the out-door walk around test hardly moves with the shield in place .... I live on a street that almost runs north to south so I changed the bearing to 180 in the .h file and walk up and down the street and in circles....The rudder doesn't seem to follow or even move ( GPS indicates lock ) Nieghbours are starting to wonder about me ....Yet before I added the shield I had it following and taking a position in each direction using the NE scetch file ....I have it out of the model now and set up on a test block of foam ....Anything new on getting the setup utility working in XP....Wont't work for me ....Can we add WP's by hand in 2.2 ??? Are there any testimonies to full completion of this project using the setup utility and geting the EasyStar to repeatedly fly to and from Way-Points ....I would love to getting it working before the end of summer ...
Summer is short here ....
Haha Reto. I am in a very similar situation :D
Now that Ardupilot 2.2 and the Ardushield have been been released hopefully things will level out and the community can catch up with Jordi and begin to contribute.
yes agreed I understand all the aspects of diy and learning. I all for it. I just have to switch my mind from "this should work" to "how can I get it to work" I will get there... much learning to do... It sure seems like it is almost there.... and addiction yes.. I hear ya... mikrokopters are my other additction...
for those like you who didn't understand that it is based on an open source and so it is not a complete RTF (ready to fly) setup, i would say you should have bought a RTF setup as RangeVideo OSD that i s 335 dollars.
for those who would like to learn how to prorgam in C language and who like electronics, take the ardupilot whitch is i'm sure a really good platform to do your own projects...
@steve kloppenburg
wait a bit and i'm sure with a little more money you'll be able to fly your plane with ardupilot soon (and i will hopefully)
Comments
http://paparazzi.enac.fr/wiki/Infrared_Sensors
Go and click in the "Other Infrared sensors" and over already did the work for us. All the deal is in the resistors R2 .8Mohm and R3 510 ohms (for one axis) and R5 .8Mohm and R6 510 ohms (for the other axis). Those resistors are the ones that set the gain of the Non-Inverting Opamp: you can find a gain calculator here:
http://www.pic101.com/opamp_calc.htm. Paparazzi uses .82 Mohns and 1kohm instead. You can check it here: And click in hardware support for this board to check out the schematics, see the opamp resistors, those resistor are the one that must be equally. I mean i suggest to change the resistor of both boards in order to make it 100% perfect and the resistors must be 1% or less of tolerance (the blue magical ones). good luck!
Mainly the Paparazzi, dean and FMA sensor are exactly the same components (who copy who?). But the only difference is the resistor gains (don't worry about the capacitor, all could .1uF)...
you can change four 0806 huge resistors in the fma xy sensor or change two 0603 resistors in the z paparazzi sensor. You can also compesate the diferece of gains by software. I can give instructions to hacks the sensor (I love hack). ;-)
pilot skills, electronics skills, programming skills, math and physics skills and even more. But if you have a weak point here is the place where you will improve it.
Summer is short here ....
Now that Ardupilot 2.2 and the Ardushield have been been released hopefully things will level out and the community can catch up with Jordi and begin to contribute.
for those who would like to learn how to prorgam in C language and who like electronics, take the ardupilot whitch is i'm sure a really good platform to do your own projects...
@steve kloppenburg
wait a bit and i'm sure with a little more money you'll be able to fly your plane with ardupilot soon (and i will hopefully)
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