Search found 70 matches

by Tempo
Tue Dec 29, 2015 5:32 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

@dschiedsch Addition of coil and capacitor for improved ADC-measurement looks good. Please locate all pads on small side so that soldered cables become unidirectional. Use both sides of double-sided PCB. "I didn't implement 4 pads for NiMh battery because i think it's useless to monitor individual c...
by Tempo
Wed Dec 23, 2015 1:10 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

So after a bit of waiting here is the dlg version of my board Have a look at the pdf for details Gerber files are uploaded as well. Board dimensions are 13,5x25mm How's this for a small board? Features vario and 2S lipo measurement Board dimensions smaller as arduinopromini :D Please integrate 3 sm...
by Tempo
Tue Nov 17, 2015 5:20 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

Hi I was thinking about integration with the receiver Since the FrSky protocol was reverse engineered http://www.rcgroups.com/forums/showthread.php?t=2124647 I was thinking about integrating both for minimal space. Not sure how well this would work though Do you mean this 8-) : One PCB 30mm x 15 mm...
by Tempo
Mon Nov 16, 2015 5:35 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

Hi what would be on the wishlist for a DLG version?... 1. small geometric dimension e.g. 15mm x 30mm like design of "openaltimeter" http://openaltimeter.org/index.html with only holes and flat points for electrical contact 2. arduino-6-pins for flashing firmware 3. high precission MS5611 But shown ...
by Tempo
Thu Nov 12, 2015 3:25 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

... I removed unneeded parts of the PCB from Arduino Pro Mini board (serial connections, reset button and LDO). And I reused an LDO from pressure sensor. 1S battery is connected to the MS5611 board (VCC/GND) and power for the Mega is taken from out of the pressure sensor LDO. I do not know what LDO...
by Tempo
Wed Nov 11, 2015 5:36 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: custom PCB
Replies: 64
Views: 8163

Re: custom PCB

Another example http://openrcforums.com/forum/viewtopic.php?f=86&t=4433&hilit=sensor&start=450#p85568 same size as "arduino pro mini" 33mm x 18mm : I have now made ​​even a simple design for a sensor with Alti / Vario and voltage display for 3 or 4 Lipo. Additional voltage regulator stabilizes the i...
by Tempo
Mon Nov 02, 2015 12:35 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: GPS sensor
Replies: 418
Views: 35120

Re: GPS sensor

... Where can I buy the ms4525 you mention? http://openrcforums.com/forum/viewtopic.php?f=48&t=5632#p81716 https://store.3drobotics.com/products/pixhawk-airspeed-sensor-kit http://www.aliexpress.com/store/product/free-shipping-4525DO-DS5AI001DP-MS4525DO-digital-airspeed-meter/621648_32487213012.htm...
by Tempo
Sat Oct 31, 2015 8:34 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Increase voltage resolution with oversampling & decimation
Replies: 17
Views: 1865

Re: Increase voltage resolution with oversampling & decimati

... I will merge it into master when code is fully tested. I had already made the change to increase the resolution. I just added a change to support External reference. I fixed the bug that you just said. The version is on github (in openXsensor_GPS). ... Thank you. This improvement is useful. :) ...
by Tempo
Tue Oct 27, 2015 7:24 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Building TWI(I2C)-sensors for openXsensor with ADS1115
Replies: 16
Views: 3388

Re: Building TWI(I2C)-sensors for openXsensor with ADS1115

If you use device ASC712ELTR-05B-T with Atmega328 on oXS-arduino-board you have current-resolution of 26.4mA/step and current-value and sensitivity depends on VCC, because ACS712 is a ratiometric sensor. For measurements of currents down to mA it´s inadequate, e.g. current consumption of servos in f...
by Tempo
Mon Oct 26, 2015 6:07 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Building TWI(I2C)-sensors for openXsensor with ADS1115
Replies: 16
Views: 3388

Re: Building TWI(I2C)-sensors for openXsensor with ADS1115

Have a look how to modify cheap chinese ACS712-module and add ADS1115, which is a 16-Bit-ADC with Two-Wire-Interface (I2C): oXs_TWIcurrent_Tempo.JPG What´s going on ? First ADS1115 gives 16-bit-value for (VIOUT-VCC/2) on differential input AIN0+ and AIN1-. Using differential value enables to use 16-...
by Tempo
Mon Oct 26, 2015 11:11 am
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Building TWI(I2C)-sensors for openXsensor with ADS1115
Replies: 16
Views: 3388

Re: Building TWI(I2C)-sensors for openXsensor with ADS1115

Indeed , all solutions should work. Just 3 commenst: - I do not know what is the max length of the wiring on I2C bus. I am afraid that if it becomes too long, there could be errors on the bus. Perhaps good to test. Length about 1 to 2 meter are working good. - current sensor is ratiometric. In orde...
by Tempo
Sun Oct 25, 2015 10:29 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Building TWI(I2C)-sensors for openXsensor with ADS1115
Replies: 16
Views: 3388

Building TWI(I2C)-sensors for openXsensor with ADS1115

You have several options to connect sensors on SmartPort: 1. use one openXsensor with one microcontroller and some sensors 2. use up to 28 openXsensor-microcontrollers with different SENSOR_ID http://openrcforums.com/forum/viewtopic.php?f=86&t=7729 3. use one openXsensor with one microcontroller and...
by Tempo
Thu Oct 22, 2015 2:07 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

Re: SENSOR_ID and using two or more oXs on SPort

Thank you ! This is complete answer to "SENSOR_ID and using two or more oXs on SPort" . :D
by Tempo
Thu Oct 22, 2015 1:58 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

Re: SENSOR_ID and using two or more oXs on SPort

Thank you Mike for rules how to piece together Bit5, Bit6 and Bit7.
by Tempo
Thu Oct 22, 2015 1:14 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

Re: SENSOR_ID and using two or more oXs on SPort

@mstrens
What about SENSOR_ID substitude with DATA_ID_OXS1 in future oXs-software ?
And it´s perhaps helpful to add rules for valid SENSOR_ID in your very good oXs_config_description.h ?
by Tempo
Thu Oct 22, 2015 12:47 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

Re: SENSOR_ID and using two or more oXs on SPort

Thank´s Mike for information. ;) * #define DATA_ID_VARIO 0x00 bin 000 0_0000 for sensor number 1 * #define DATA_ID_FLVSS 0xA1 bin 101 0_0001 for sensor number 2 * #define DATA_ID_FAS 0x22 bin 001 0_0010 for sensor number 3 * #define DATA_ID_GPS 0x83 bin 100 0_0011 for sensor number 4 * #define DATA_...
by Tempo
Thu Oct 22, 2015 12:08 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

Re: SENSOR_ID and using two or more oXs on SPort

@mstrens In file oXs_config_description.h you explain line65 "Valid values are 0x1B, 0xBA, ... (there are 28 values)" I use two oXs and both connected to serial SPort-pin. First oXs(Variometer and CellVoltages) has SENSOR_ID 0x1B and works very well :-) Second oXs(Current measurement) has SENSOR_ID...
by Tempo
Sun Oct 18, 2015 8:11 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: SENSOR_ID and using two or more oXs on SPort
Replies: 13
Views: 1285

SENSOR_ID and using two or more oXs on SPort

@mstrens In file oXs_config_description.h you explain line65 "Valid values are 0x1B, 0xBA, ... (there are 28 values)" I use two oXs and both connected to serial SPort-pin. First oXs(Variometer and CellVoltages) has SENSOR_ID 0x1B and works very well :-) Second oXs(Current measurement) has SENSOR_ID ...
by Tempo
Sun Oct 04, 2015 8:17 pm
Forum: Sound Pack Library
Topic: German female voice "Bettina" (real samples)
Replies: 1
Views: 5358

Re: German female voice "Bettina" (real samples)

Which voicegenerator offers "bettina" ?
How to produce audio files with "bettina" ?

I need some selfmade *.wav-files with voice "bettina".
by Tempo
Fri Oct 10, 2014 5:08 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: OpenXSensor project page on google code
Replies: 134
Views: 21611

Re: OpenXSensor project page on google code

La coopération franco-allemande est très bon ;)
by Tempo
Mon Oct 06, 2014 3:28 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: OpenXSensor project page on google code
Replies: 134
Views: 21611

Re: OpenXSensor project page on google code

@davx
Good work on documentation and openXconfigurator.

For "thermal hunting" you need TEK-probe. If you want, add this to wiki:
viewtopic.php?f=86&t=5856#p83775
by Tempo
Thu Sep 04, 2014 9:07 am
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: New beta version of openXsensor (=openXvario)
Replies: 428
Views: 37066

Re: New beta version of openXsensor (=openXvario)

Are the TEK probe and the Prandtl probe close to each other so that they get the same pressure? Sensors.jpg (Important picture of fitted probes !) The positions should be OK, but TEK is sensible, you remember maybe, when i mounted the camera, suddenly TEK was overcompensated, i had to change it aga...
by Tempo
Sun Aug 03, 2014 8:22 pm
Forum: The Pickled Gnu (The Pub)
Topic: Open source speed sensor?
Replies: 77
Views: 13987

Re: Open source speed sensor?

Hi paulj, yes, you are right it is "Helmut Reichmann: Streckensegelflug; Motorbuchverlag Stuttgart 1982; ISBN 3-87943-371-2" You can also get an English translation: Reichmann, H. Streckensegelflug. Motorbuch Vlg., Stuttgart, 1975. English translation as Cross-Country Soaring published in 1978 by th...
by Tempo
Sat Aug 02, 2014 3:32 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Add Multiplex-Sensor-Bus (MSB) protocol on openXsensor
Replies: 0
Views: 864

Add Multiplex-Sensor-Bus (MSB) protocol on openXsensor

Let´s concentrate informations and discussion. Thank you mstrens for assistance: http://openrcforums.com/forum/viewtopic.php?f=86&t=5631&p=84184#p84184 ;) Information to implement MSB-protocol you find there: http://www.mikrocontroller.net/articles/Der_Multiplex_Sensor_Bus_%28MSB%29 http://sensiq.bl...
by Tempo
Sat Aug 02, 2014 8:47 am
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Merging/expanding OpenXVario branches
Replies: 32
Views: 5039

Adding Multiplex-Sensor-Bus MSB protocol

Hi OpenX* developers, ... For the telemetry, there is already support for FrSky Hub, FrSky Sport and Jeti but Jeti support is now in a separate branch. I have also (partially) working code for the Multiplex Sbus protocol that could be added. There is enough knowledge available on the Net for other ...
by Tempo
Wed Jul 30, 2014 5:19 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Airspeed sensor for openXsensor
Replies: 6
Views: 2255

Re: Airspeed sensor for openXsensor

Yes, you get it. Let´s continue good job ! It´s an interesting experiment. My prefered solution is without extra static source. You can get also errors with bad Prandtl-probes. Generating only values with sensor and microcontroller is easy. Making real measurements is pretentiously.The same holds tr...
by Tempo
Wed Jul 30, 2014 5:11 pm
Forum: Software
Topic: Airspeed Sensor For FrSky ?
Replies: 1
Views: 591

Re: Airspeed Sensor For FrSky ?

by Tempo
Wed Jul 30, 2014 5:05 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: Airspeed sensor for openXsensor
Replies: 6
Views: 2255

Re: Airspeed sensor for openXsensor

precise distinction: (A) electronic compensated vario Needs airspeed information and uncompensated variometer information, therefore MS4525DO and MS5611. You need Pitot-tube anyway. And correct static pressure for airspeed and vario. Static pressure is source of error, because it is very difficult t...

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