|
From: | Roman Nikitin |
Subject: | AW: [Paparazzi-devel] IR sensors. |
Date: | Sun, 7 Nov 2010 11:15:07 -0000 |
Thank
you for the answer, but I think you misunderstood me a bit. I have 0
reading in message window, but it is the case when my IR1 neutral 40, IR2
neutral 186, TOP neutral 615. And it looks not well I mean. Even if I
move my finger in front of one or another side of my sensors the values changes
just about one or two, or sometimes I cannot see any changes at all. More ideas
about it? Should I buy another sensors or maybe somebody had same problems and
solved them? Von:
address@hidden [mailto:address@hidden
Im Auftrag von David Conger Roman, I see similar things with all my IR sensors. Things that
help: 1. turn off all other ADC not used. If you are testing IR
sensors only disable IR3,4,5 etc in the airframe file by deleting references to
them. 2. Cover the IR sensors with many layers of foam. To get
very close to 512 I had to wrap IRH in foam 3cm thick and put it inside another
foam container. 3. IRV for some reason is hard to get neutral and seems
dependent on the other sensors IR1 and IR2. It took me many permutations to get
all to be close to 0 when no IR is registered (i.e. in foam in a foam
container) Here's my airframe values for my wing using those same
sensors: IR1 neutral 507, IR2 neutral 505, TOP neutral 500. I have tried replacing the resistors on TOP to 1% with no
difference. I have seen however as IR1 and IR2 neutrals are found then TOP
requires less correction. It takes some time. Also let everything sit for about
2-4 minutes before you use the values to try and get the neutral. Hope this helps. -David On Nov 6, 2010, at 9:30 AM, Roman Nikitin wrote:
Hi
all, Martin
thank you for the rush answer. I will have a look at the stuff later on. After
I tested control surfaces I mentioned that the rudder moves in Auto mode but I
cannot control it manually. I am not sure if it is the ppm encoder issue or
something wrong with the codes. The rest of the surfaces and switches are ok. I
have also some troubles with my IR sensors. To get the readings around 0 value
(for neutral, covered sensors) in Message window, I was forced to define
IR1 = 40, IR2= 186 and TOP = 615 in airframe. xml. According to all
instructions I read, it should be around 512. After I tried to test them
outside, I get always crazy readings on my artificial horizon display in GCS. I
come to the conclusion they gone. Am I right? Or maybe there is another methods
to test IR sensors on their workability?! In case they are not working any
more, is it possible to get them in UK in short time? Here they are http://paparazzi.enac.fr/wiki/Image:Irsensors.jpg. Regards, Roman Bristol
Institute of Technology University
of the West of England Aerospace
Systems Engineering email: address@hidden Mob.:
+44 (0) 7760806643 P please
consider the environment before printing emails. _______________________________________________ |
[Prev in Thread] | Current Thread | [Next in Thread] |