MultiWii

QuadBow

Hi ardufriki, Are you talking about multiwii frsky telemetry or about openlrsng you mentioned in http://www.multiwii.com/forum/viewtopic.php?f=15&t=6262 ? Have you connected the level converter (mentioned earlier in this thread) between your multiwii flight controller and the FRSKY receiver? You...

QuadBow

Hi Hamburger, Do you really see accurate measurements with 10mA steps from your sensor all the way through the adc? Of course, I don't. With a PINT2mA of roughly 100 you will always have a difference of 100=0.1A even when filtering. I got a PINT2mA of 74 resulting to a 0.444 A or 0.518 A when armed....

QuadBow

Can you connect to multiwiiconf?

QuadBow

Multiwii makes no differnce between radios with different channels and enables therefore at least 8 channels are displayed by multiwiiconf.
Take AUX1 and set the checkboxes of HORIZON for LOW, MID and HIGH. That could fly, but it is neither testet nor guaranteed. So, be careful!

QuadBow

I know, the 2.4pre discussion has been closed and the 2.4 has been released. However, I found an issue with the following line of code just today: analog.amperage = ((uint32_t)powerValue * conf.pint2ma) / 100; // [100mA] //old (will overflow for 65A: powerValue * conf.pint2ma; // [1mA] So the ampera...

QuadBow

Currently, I am integrating the recent frsky telemetry code into multiwii 2.4 covering following values: FRSKY FLD-02 first page arming time left energy of battery (rough fuel display) battery voltage vcc voltage temperature (celsius or fahrenheit) number of satellites instead of second temperature ...

QuadBow

#define SERIAL_SUM_PPM PITCH,YAW,THROTTLE,ROLL,AUX1,AUX2,AUX3,AUX4,8,9,10,11 //For Graupner/Spektrum is only valid for a sum signal, that means for all inputs you need one pin only. For a standard 8 channel transmitter/receiver combo you have to follow the standard pin assignment. Otherwise you cou...

QuadBow

Have you followed the wiki beginner's guide http://www.multiwii.com/wiki/index.php?title=Config.h ?
At the end there is the explanation how sensors should react by turning the copter/flight controller with sensors.

QuadBow

is there anyone out there that can tell me what I am doing wrong. or if anyone has an edited version of this I could read I would be very greatful. The issue is related to the prog_char macro which is deprecated in the newer arduino toolchain. You can fix it by replacing prog_char with const char. ...

QuadBow

But is it correct put two pull-up resistor one between SDA and VCC and another SCL and VCC? It is correct to have pulls-ups between SDA (sensor side) and Vcc (3V) and SCL (sensor side) and Vcc (3V). The ADXL345 has no own pull-ups due to the mentioned documentation. But I don't know whether the lev...

QuadBow

Is it normal behaviour multiwii 2.3 for motors to start up high speed when quad is armed, and barometer is selected even when on the ground at zero throttle...? In multiwii 2.3 it is not possible to arm with baro enabled. This feature was introduces in order to avoid such events. Either you don't u...

QuadBow

Any low revolutions motors can make it? Just changing the motor/ propeller combo will not change much in most cases. But that depends on your copter/accu/motor/propeller configuration. Check your configuration under http://www.ecalc.ch/xcoptercalc.php?ecalc&lang=en . The best solution is to sav...

QuadBow

But now I have another problem because when I connect these sensors together the led of arduino blink and I searched and I found that this is a problem of connection of I2C. I don't believe so, since there is no LED indicating I2C issues. I think the digital output D13 blinks, because multiwii assu...

QuadBow

Actually, your wiring looks good. But, the use of interrupts is not supported by multiwii. So, firstly remove the two wires. The addresses can be selected via the SDO pin. Don't leave them floating, wire them to ground. I understood that the ADXL has the i2c address 0x53 due to http://www.analog.com...

QuadBow

also think the i2c errors are expected for now. I don't have the GPS module installed but it's programmed for them. Actually not - you bought a Mega2560 board, which would have been my recommendation, as well. This board has 4 serial ports. So, you can connect your gps device directly to one serial...

QuadBow

Thousands of i2c errors mean that you have not configured your software properly. So, the sensor are not queried and multiwii refuse to control the motors without sensor data. Set up the file config.h due to the manual which should have been provided by your dealer and load up the sketch via the Ard...

QuadBow

but where physically on the board is serial 3? Your dealer should be able to answer this question. I still don't know exactly, what board you are talking about. I would connect the receiver to the mini-b plug through the thing you linked me? Are the ports the I2C ones? No, connect the Tx pin of ser...

QuadBow

vtpete wrote:did I kill the GPS board? Please tell me I did so that I can through these thing in the trash

If you have swapped Vcc and Gnd it is likely, that the Gps board has been heavily damaged. If you only swap Rx and Tx, it will not harm.

QuadBow

was under the impression that WinGUI 2.3 could run waypoint nav flight? There is at least a WinGUI_2.3pre8(b5) version that supports waypoint navigation requiring a special MultiWi2_3-navi-b5-baro_fix version MultiWi2_3-navi-b5-baro_fix as shown here https://code.google.com/p/mw-wingui/downloads/li...

QuadBow

I don't know, whether that is a good idea. It is not a problem to use a mobile conntected via bluetooth in order to configure its paramaters or to retrieve telemetry data. However, I would not recommend to control it via a mobile phone. In acro mode you have to react fast and precisely - I can not i...

QuadBow

@seikuruo You are using a cheap Promini/ATmega328-based flight controller. That type of controller has only one serial port. That serial0 is used for the connection to your computer. Frsky telemetry requires a second serial port-not an AUX port. Therefore you have to use a Mega/ATmega2560-based flig...

QuadBow

After 2.4 release, are you ok to integrate and support frsky things in the main branch ? Hi Alex, I would be pleased to do so. The question would be how to integrate frsky telemetry into multiwii leaving some room for other telemetry protocols like hott, s.port, etc. My proposal would be to start w...

QuadBow

However, I cannot figure out how to tell the quad to "start" the route I created and uploaded. Waypoint navigation will be supported by Multiwii 2.4, which is still a beta version. My recommendation would be to use multiwii 2.3 in order to become familiar with the copter. Use the simpler ...

QuadBow

izeman wrote:so i changed the Voltage Amperage section in telemetry.cpp to the "original" voltage calculation:

It seems that FRSKY deviated for the voltage from the normal scheme of one integer before the dot and one after the dot.

QuadBow

Can you link a power inverter that would work? You need something like this: http://www.multiwii.com/forum/viewtopic.php?f=7&t=1929&hilit=direct+frsky&start=50#p26160 Would this work on the HK 328p and HK MultiWii pro? Where would I plug stuff in? You need a free serial port to connect ...

QuadBow

is around a factor 2 off. can that be? The FLD-02 device has to be configured, too. Go to "Menu" at start-up and set the second value of the entry "Volt Ratio" to the ratio of the resistor devider for the accu voltage. If you change that ratio to the half of the current value, i...

QuadBow

i have the described phenomen, that the motors only start spinning at half throttle. My questions about that: - What can i do about this or is it normal? No, it is not. The motors should start spinning at lowest speed when armed. With half throttle, the copter should have started to hover. What you...

QuadBow

You got a cheap p328-based flight controller. How have you connected your gps device to the flight controller? PS: The p328 flight controllers will become legacy soon when multiwii 2.4 will be released due to memory limitations. If you intend to use gps features (e.g. waypoint navigation) I recommen...

QuadBow

The only difference was all on board or board +external antenna. Not sure which way to go. What do you suggest? I have never seen an UBLOX Neo-6m to be sold with external antenna. But, the antenna is only slightly glued and therefore removable. Are you sure that have not seen the gps device with i2...

QuadBow

Pretty confusing thread... Due to another request I provided a non-standard multiwii package at http://www.multiwii.com/forum/viewtopic.php?f=7&t=1929&start=300#p61873 So what would I need to buy to get it to work? Since you got already the FLD-02 and a telemetry transmitter/receiver combo ...

QuadBow

one week later, and nobody here is willing to put a working multiwii version online? I saw your point and took it into consideration... Attached you can find my FRSKY telemetry extension to multiwii. Consider that you have to use a level converter between FC and FRSKY receiver as described earlier ...

QuadBow

i wondered if anyone has succesfully made one using the available code ? I bought one of the i2c_gps_nav boards, which work well for most gps devices. You can update the firmware if required due to https://code.google.com/p/i2c-gps-nav/downloads/list But, mentioned earlier, the whole i2c_gps approa...

QuadBow

There are special p328-based boards for this purpose. Google after I2C_GPS_NAV. But be warned: the forthcoming version of multiwii 2.4 will not support p328-based flight controllers to the most possible extend due to memory lack issues. So, you should consider to buy an Mega2560-based flight control...

QuadBow

The related dicussion can be found under http://www.multiwii.com/forum/viewtopic.php?f=7&t=1929
GPS support is included, as well.

QuadBow

Have you got a clean multiwii distribution? Have you got a 3,3V-board? They could cause issues when running 5V sensors like the SRF08. Maybe you need a level converter. What about the default address of the device? SRF08_SENSOR_FIRST is 0xF0 - that should be the address of your device, as well. Ther...

QuadBow

Sonar poses a lot of challenges, This is true for the simple sonar devices. But, we are talking about the SRF08, which is an i2c device. The only challenge is to send one i2c command and retrieve the result back. I'm not surprised it hasn't been incorporated in the control loop yet. It has been inc...

QuadBow

Have you enabled the sonar in the file config.h?

Code: Select all

/* Sonar */// for visualization purpose currently - no control code behind
//#define SRF02 // use the Devantech SRF i2c sensors
#define SRF08
//#define SRF10
//#define SRF23

QuadBow

vtpete wrote:...and it starts working...

Fine! Nevertheless I recommend to go back to 57600 baud, since that's fast enough and the failure rate is much lower than at 115k.

QuadBow

NMEA GPS eabled, Serial 10, 57600 baud Beneath #define NMEA you have to define #define INIT_MTK_GPS, as well. Serial10 seems to strange since the Mega2560 has "only" 4 serials, serial0...serial3. 57600 is fine, since multiwii tries out all speed possibilities. So, check GPS_SERIAL and try...

QuadBow

Have you uncommented

Code: Select all

#define ALLOW_ARM_DISARM_VIA_TX_YAW

?
Stick range? - Look here: http://multiwii-beginners-guide.blogspot.de/
BARO enabled? - Disable it.

QuadBow

vtpete wrote:void SerialGpsPrint(prog_char* str) {

The error message you provided differ a bit from the original code shown below:

Code: Select all

void SerialGpsPrint(const char PROGMEM * str) {

Are you shure that you got a clean MW 2.3 distribution?

QuadBow

mini mega 3.5 Hmm, that appears to me like a contradiction in terms. Even google does not know what a mini mega 3.5 does stand for. Maybe you should be a bit more accurate with the name of your board and provide more details like the name of the manufacturer and the dealer. Otherwise it will be imp...

QuadBow

i still don't understand why this doesn't find it's way into the official branch. does it add so much more complexity? frsky telemetry doesn't destroy any other features, and if you don't activate the code it's not even present in the firmware ... I agree with you. I don't understand neither, why t...

QuadBow

Congratulations!

QuadBow

the functions Gyro_getADC() and ACC_getADC() are predefined in the muliwii ? Those functions are implemented in the file sensors.cpp. Why haven't you already looked into the source code? if you have any link that shows how to transfer the data through serial0 A short google search after multiwii pr...

QuadBow

Your calibration method seems to be a bit complicated and also misleading, since you taught the ESCs the range of your receiver and not of your multiwii board. Repeat calibration without taking your board apart again. Follow this instruction https://code.google.com/p/multiwii/wiki/ESCsCalibration An...

QuadBow

I am familiar with arduino programming and already i have made a lot of work just trying different sensors and i would like to upload my own control on the multiwii and i need to know what functions or code that can make me get the readings of the sensors the next step will be sending this data to ...

QuadBow

I want to make my own control theory and gui interface so i need the readings of the gyro , acc mounted on the multiwii to have a feedback in my controller That's nice to hear, but leaves still many questions open. Do you want to control a copter or do you only need the sensor data? Will the sensor...

QuadBow

Complex systems tend to easy mistakes...

QuadBow

A raspberry pi board is much bigger than a arduino based fligth controller and it does not have the sensors already included. The raspberry pi has no analog inputs on the board, so you need another card to watch voltage and currents. Of course, the calculational power of an raspberry pi is overwhelm...

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