openrcforums

a similar information here in europe on the website of microtechnics.eu:
"According to last communication received from FrSKY, first batch radios should be available here around middle of June."
but the first batch is allready fully pre-ordererd there... ( i'm on the list )

Hi Bill!
great to hear another oXv is working!
i guess you have audio working in general.
the main thing is to set the limits on the telemetry setup secreens to something like -3, -0.1, 0.1, 3 and to create a custom function in which you assign any switch to the action "Vario"
Rainer

no, the sensor resolution is not the problem here. its the way that the data transmission in the protocoll takes place. it only transfers in "deci Ampere" so ampere multplied by 10 without any decimal fraction. so in real life: 1234mA are 1.234A, but the protocoll only has place to transfe...

:D you like big and loud planes, don't you? if you remove the terminals from the 5,20 or 30A ACS712 boards you get a real small board. even smaller and lighter than the oXv itself. so why not put it on all those planes that normally do not have a current sensor installed. any kind of non or small el...

If you want to use an airspeed sensor with an output linear voltage relative to the airspeed, thats quite easy to implement. i would just have to find out how to transfer airspeed to the opentx. the rest could be copied over form the current sensor code. Getting a TEC vario out of it would be a bit ...

i tested the current measuring a little bit further using a +-5A sensor i am planning to put into my DLG. Yes. a DLG. no engine at all. but still i would like to see the consumed capacity from the onboard lipo/lifepo. Consumed current caclulation is probably the best battery meter currently availabl...

reserved-

openXvario+C == Current sensor support in openXvario == There are plenty of real cheap current sensor modules available on eBay from far east sellers. Prices start at something between 2 and 3€ for a bidirectional current sensor in the +/- 5A,20A or 30A range. https://openxvario.googlecode.com/svn/...

prepare your solder irons... Grab some cheap chinese current modules and connect them to your oXv The new functionality for Current sensor modules seems to work fine. it currently not released to the main branch, but a test version available in my developmens(play) branch. i just did a test with a A...

No idea if it will run on an atmega8... never tested it on anything else than atmega328.
But you could use your existing oXv. you just need to connect gnd, vcc and the signal from the acs goes to pin A2.
if you want, add a small female 3 pin header and you can disconnect if it is not needed.

no problem..
just treat it as "bidirectional" ( due to the 0,6v Offset )
600mV / 40mV/A ==> 15A => MinMilliamps= -15000
5-.6=4.4V =4400/40 = 110A => MaxMilliamps= 110000
and your sensor should work fine.

should work as well. Uni or bidirectional... all fine. you will have some parameters where you define Milliampere at 0v and Milliampere at 5v (or better the "supply voltage" from arduino to the current sensor) i've got one ACS712 that supposed to be a -5A to +5A module. i had to take mV/A ...

wow.. 15 minutes i'm slower... ;-) Btw. i am currently implementing current sensor support. so (hopefully) soon we will be able to connect various current sensors directly to the openXvario. i am using the AC712 ( 5,20,30A ranges) for testing here. >These and all other ranges should be supported as ...

OK, good to hear its working now... looking forward to another flight report then

the normal variation depends very much on the configured sensitivity. lower values for kalman_r result in a more sensitive behavior with faster reaction speed and more sensor noise => more variation in altitude/pressure/vertical Speed but in general the variation is around -5 to +5 cm/s with peaks o...

@dumbthumbs @mpjf01 OK, i did some further research and found this post: http://openrcforums.com/forum/viewtopic.php?f=23&t=994&p=40454&hilit=wrong+data#p40454 that sounds exactly like the problem you are experiencing with the jumps in the altitude and seems to be related to the telemetr...

Hi mpjf01, the second sensor you bought can be used to equip another plane. this one is definetly fine. The arduino is not constantly rebooting. otherwise there would have been a short delay when the problem occurs. the measured absolute height in this video is around 48 Meters above sea level. (whi...

so 3 documented test flights yesterday with 2x smoke... not a bad ratio :D @Flaps: yes. i like it sensitive.. i get false readings but the advantage is that i get a faster response time as well. and the last bit of filtering takes place in the Pilot ;-) The false readings you get... is it when flyin...

OK, had a nice day out with 2 gliders yesterday. My longshot 2 had a D4R-II with openXvario on top of it installed. Sensitivity was set to 240 with sound actrivated for lift+sink (0.1m/s each) It helped me to find some lift and have 2 10-15 minute flights without landing. The other one was my old ea...

be carefull connecting the GY63 to a 3.3v I2C... I'm not an electronic expert either, but there are Pullups on the GY63 ( the 2 smd resistors directly above the I2C connection points) the board you ordered should works fine with the arduino pro mini 5v if connected as described in the build instruct...

sorry to hear that.. if we are only lucky.... then a lot of us had luck so far. The GY.63 board is the most commonly used sensor board. I'm not an engineeer, but there are 2 2.2k Pullup Resistors on the I2C lines of the GY63 board that should take care of the 3.3/5V if i understand it right. I had >...

if you have somebody around with a modded 9x with telemetry, the best thing would be to try it with a different transmitter to eleminate all problems on that side. i'm using a sky9x board here so don't have any experience with the telemetrEZ boards. but as i said, the DISt and ALT fields get written...

Hi DumbThumbs! Sorry to hear that you are having problems. Its difficult to identify the problem if i cannot reproduce it here. Do you have the jumps only in the ALT field or as well in the DIST field. If the DIST Fields jumps the same as the ALT field, this could be a problem on the oXv/sensor. If ...

i guess a nice little oXv sticker on top of the sensor should do the job. as well... and it keeps the nice look

Hi Joao, the interesting part would be the voltage the sensor actually puts out for various different currents. Which voltage does it put on the A1/A2 for some test currents? ( measured behind the voltage divider) you could for example just programm your A1/A2 port to display the current measured wi...

I would go for 0x19. the chance that somebody wants to use two different speed values for one plane in parallel is rather small.

Sorry i didn't have much time lately, so no progress from me as well

old seller rule: try to win time till ebay/paypal time limit reached

old chinese buyer rule: if problem not solved before ebay/paypal time limit: escalate in ebay/paypal

1hPa air pressure change per 8 Meter e.g. yesterday between 18:00 and 22:00 we had an air pressure change of about 2 hPa = 16 Meter and that's with a "stable" weather condition. on other days you can have huge differences resulting in height changes of a couple of hundred meters. And yes t...