openrcforums

I got my openXsensor working this morning. One of my arduino nano boards is serviceable and I was able to upload to it after many attempts. It is now satisfying to see my coordinates displayed on the telemetry screen in my Taranis X9DPlus. Thanks Greg. My vario is working in the combination openXsen...

...................................... The GPS connects Tx(gps) to Rx0 pin on Nano and GND(gps) on adjacent pin GND pin to Rx0, D6 connects via 10K resistor to Rx(gps) shows 3.7V after resistor. 5V on gps connects to 5V pin on nano .................................... Greg, My interpretation of you...

Jim, if you can not upload 'blink' there is definitely something wrong. ............................. Karl, After a great many failed attempts using several boards, computers, cables etc. , I got a arduino nano out of the cupboard that has successfully uploaded with a spare openXsensor vario (for l...

Indeed, if you have a 5V regulated power supply, you can connect it to the 5V pin GPS can also be connected this way. Still when using e.g. a 4.8 V NiMh battery, the voltage when it is just charged is more than 6V. It is then safier to use VIN (= RAW). When input voltage goes below 5.5V on VIN, the...

Hi Jim, My understanding of these things is 'raw' means you can power the board with anything from 5-12V on the "Vin" pin - so in the case where you're powering Vin from a higher than 5V voltage source, then you need to use the regulated 5V that the board puts out on pin "5V" to ...

I will order some arduino Uno boards.
Thanks Karl.

Jim, you are aware of this here!? https://imgur.com/5s2Hgzkl.png ......................... I am aware of that and have had to use the old bootloader formerly. I also have tried the one above. And check/change your USB cable and use another USB port................... I have tried several USB cables...

Jim, you are aware of this here!? https://imgur.com/5s2Hgzkl.png ......................... I am aware of that and have had to use the old bootloader formerly. I also have tried the one above. And check/change your USB cable and use another USB port................... I have tried several USB cables...

Jim, as always, you are very sparingly with information. :roll: What are you doing there? What components, what sketch? ................. Sorry Karl. I am trying to flash (Upload another openXsensor to an arduino nano. I am trying with the sketch that worked last time. BMP280 BARO. Also trying with...

This may not be the place to ask, but I am hoping someone can direct me to the best place. I am being haunted by this error notice. One both an old proven sketch and a new one. Both the same error notice. I have done lots of searched, including watching the video from Painless360 here: https://www.y...

Thanks Michael.
Still leaves me with a mystery though...........about this "raw" pin!

.............................. I have a BN-180 here and I can reassure you, you can connect those BN-180 and BN-220 as described in chapter '**** 9 - GPS (optionnal)' ................................. Karl, I too now have a BN-180 GPS module and and arduino nano flashed with the openXsensor sketch....

................................ I employ a slightly simpler approach by simply using the "Save as" option in the File menu and name the file something like BMP180baro. ...................... Greg Greg, My apologies for the late reply with thanks. I have done this and recovered the file l...

Thanks again Karl.
I will read that again carefully and emulate it in my file system.
all good.

Thanks to all and apologies for the need for so much assistance.
But I/we got there in the end!

Jim.

Greg, I have managed to get a file compiled, uploaded and the openXsensor vario working! Using BMP180 baro. My only remaining dilemma is trying to figure out what I was doing wrong before!.................... Question: How do I save this compiled file reliably for later use? I might get a couple mor...

........................... Sure enough I now have a smooth reliable rpm signal all the way up to full rpm of around 7500rpm............................ That's good Greg. Just to clarify; by how much does the reading increase when the aircraft is in the air after this mod? That is, when the engine ...

.......................... If the values are erratic when using the CDI, it is probably due to some noise in the signal. You could confirm this if you can look at the output signal from CDI with your scope. There are probably some high frequencies. If so, I expect it would be possible to "clea...

.......................................... However, the figure indicated is completely erratic! .......................... I went ahead and made up a separate hall sensor mount on the opposite side of the engine to the CDI one. This one is now connected directly to the arduino board, as in my bench...

.......................................... It can be a good exercise that you first try to edit the config files just in order to get the RPM now that you know it can works. To do so, you have to: - donwload the latest version of oXs available on github. - unzip it somewhere - replace just (only) t...

I have installed the hardware module in my internal combustion two stroke powered tug plane. When all powered up, the tx. found the sensor immediately. All looking good..........so far. Then when I started the engine, the tx. telemetry display did show RPM. However, the figure indicated is completel...

................................ When I say to connect a diode to Vcc it means Arduino Vcc which is generated from raw pin (with internal regulator) which is coming from you Rx power supply I presume. I have no idea at all what you mean here Michael. It would be risky to guess. If I could view a si...

In my application of the tachometer version of the openXsensor will be connected to the tacho output of the CDI, not the hall sensor directly. The hall sensor is already powered by the CDI battery and circuit. Therefore, I will only have to connect the signal wire and the earth wire from the CDI to ...

................................ No need to add a voltage regulator. There is normally a 5V pin on the arduino. It is the output of an internal 5V regulator (that already drop your 6.6V to 5V) Ok, good. I have also just read on the nano specifications sheet, that it can be powered by 7 to 12 volts....

After studying your diagram for some minutes, I think I know how you have wired it up. But I am not at all sure, I must be honest. I will do a small CAD sketch tomorrow (it is very late here). Just to make sure I have it right. I have a 6.6 volts LiFe powered CDI unit, so I will have to add a regula...

Fine that it works. Is the rpm value on the Tx a logical value?........................ I am not sure what you mean by "a logical value", sorry. ................... If you want, I can make a version removing those 2 items. In principe, I will just go back to the "official" versi...

mstrens wrote: ↑Thu Feb 20, 2020 7:56 am ......................................
If it is more than 5 V, it is safe to add a resistor and also 2 diodes (one conducting over voltage to 5V vcc and one negative voltage to ground).

How exactly are these diodes wired in?
"Over voltage"? Do you mean a zener diode?

Congratulations Michael, you have got it sorted and working fine. Wow, that has been a lot of work for you. I have the uploaded "hardware module" plugged into my D8 receiver on the desk in front of me. Taranis tx. tuned on, rx. turned on. Discovered the new RPM sensor. Then I ran my little...

What we know and have proved or disproved : ..................................... It is not normal that with the previous version, you got 2 fix values on the TX and with this last version no one. 1. Yes. To put it in another way, Opentx / Taranis X9D Plus did discover the sensor with your previous...

.......................................... It is not abnormal that you do not get really a signal on the scope if you look at the output pin D4 because the data are sent only a few time per sec and there is no easy way to trigger the signal on the scope. ............................... That makes s...

......................... I expect that if you connect now you oXs to the RX and to you hall sensor, you will get some data on the Tx screen. I tried that, at 2 am this morning. Still does not work. The tx. does not "discover" the sensor. Please don't waste anymore time on trying to sort ...