MultiWii

TheBum

I've virtually eliminated the loop time as a factor. I'm using hardware timer interrupts to trigger each byte's transmission. The only time delay that's related to loop time is the time from receipt of the request to the next loop iteration, at which time the hardware timer for the first transmissio...

TheBum

I've been sidetracked by other projects. The last time I worked on it, I was having trouble with sensor types being consistently recognized by the transmitter on its initial polls. Even when they were recognized, GPS data would be bad every few seconds. I just need to find the time to analyze the pa...

TheBum

Good work on 2.4 - heading is computed even with no mag What does this mean? We now have some heading hold using just a gyro and accel as an option? If so how do we activate this feature or is it on all the time? The only method I can think of without a mag sensor is GPS, and then only when the mod...

TheBum

How about truncating the selected serial port name? It's likely not a problem on a PC, but on a Mac, the name can be rather long, which causes it to overflow into the PID area.

TheBum

Is there any way to make the Aux channel assignment boxes more easily clickable? I have to click the top edge of the box to get it to register. This is on a Mac.

TheBum

Update: I've implemented interrupt-driven transmission of binary telemetry data and text data using Timer0. The only sacrifices I had to make were with the Pro Mini, as follows: 1. It won't work with octocopters on a Pro Mini. 2. Hexcopters on a Pro Mini will fall back to software PWM for motors 5 a...

TheBum

Hamburger wrote:I do not think it would justify a recall of v2.4, but I will take a closer look for v2.5. Thanks.

I don't either, but it needed to be pointed out IMO.

TheBum

There's a documentation typo in 2.4 that was there in 2.3 and, being the anal-retentive person I am, it's driving me nuts. In MultiWii.cpp, the comment at the end of the following line is wrong: pMeter[PMOTOR_SUM] += ((currentTime-lastRead) * (uint32_t)((uint32_t)powerValue*conf.pint2ma))/100000; //...

TheBum

I'll add my $0.02 to the amperage discussion. I chose to go with a 50A Hall effect sensor for my mini quad and the resolution works out to 61.25mA (80mV/A). I don't think you'll get much lower than that, and higher rated sensors will be even worse. Therefore, 100mA resolution on the display should b...

TheBum

Some possible common functions I can think of are a setup function (called from the MultiWii.cpp setup() function), an arm function, a disarm function, and a "check" function. Calls for the first three should be able to be placed in static locations in the code. The "check" funct...

TheBum

Also, the first resistor serves as a current limiter to prevent overloading the Arduino Pin. The Arduino pin should have a very high impedance, so I don't see it getting overloaded. However, you need the first resistor after the Zener to form part of the low pass filter that removes noise (the cap ...

TheBum

reference version to compile sketch - MultiWii sketch : windows version of Arduino IDE 1.6.1 - MultiWiiConf : processing 1.5.1 with modified verison of ControlP5 to remove blue triangles in value box Is the Mac version of Arduino 1.6.1 excluded because it's broken? I upgraded to 1.6.1 and had to go...

TheBum

reference version to compile sketch - MultiWii sketch : windows version of Arduino IDE 1.6.1 - MultiWiiConf : processing 1.5.1 with modified verison of ControlP5 to remove blue triangles in value box Is the Mac version of Arduino 1.6.1 excluded because it's broken? I upgraded to 1.6.1 and had to go...

TheBum

Alexinparis wrote:I really did not expect this.

It doesn't surprise me a bit. How many popular services has Google created that they suddenly discontinued?

TheBum

Yeah, the PROMICRO code is especially convoluted because it has to make lemonade out of lemons (limited resources). The PROMINI code is a little less convoluted. That's one advantage I've seen to using a Mega: there aren't any special cases that depend on number of motors and number of servos; there...

TheBum

Then I would suggest you add prevalent banners at the beginning and end of the S.Port code (and that suggestion applies to any other device-specific code that comes later from whomever). That way, sections of contiguous device-specific code can easily be found or skipped while doing a quick scan of ...

TheBum

My main criticism right off the bat is adding all that code to Protocol.cpp. It adds a lot of clutter and makes the file more difficult to wade through, especially for a capability with such a small audience. I'd prefer the code of that magnitude be in its own source file with calls into it from Pro...

TheBum

I've been going through the Output.cpp code to find out if I can steal one of the timers for HoTT telemetry transmission, so I'm beginning to develop an understanding for how motor and servo output works. I can understand why someone hasn't come up with clear instructions; the code is pretty intimid...

TheBum

My quad frame is made out of thin plywood. If you sandwich it with side supports and gaps for electronics, it can be reasonably strong.

TheBum

You'll likely have to change PWM_PIN and writeMotors(). Do you know what Arduino board type it is?

TheBum

You should be able to use a Y-adapter on the SUMD output of the receiver to run the SUMD signal to both places. Communication is only one way and, fortunately, the right way to allow this.

TheBum

Can anyone tell me where I can read about code structure of Multiwii. I want to make small changes to the code, but I do not understand structure of the code. Can someone help me with that? You have to get an understanding of Arduino programming to really understand how the routines in MultiWii get...

TheBum

Can anyone tell me where I can read about code structure of Multiwii. I want to make small changes to the code, but I do not understand structure of the code. Can someone help me with that? You have to get an understanding of Arduino programming to really understand how the routines in MultiWii get...

TheBum

I'm already assuming this approach with the modifications I'm making to the old HoTT telemetry code, so merging it in should be somewhat simple.

The HoTT code is pretty large, so I'd still like to keep the bulk of it in a separate source file to keep from cluttering Protocol.cpp too much.

TheBum

I've been working through the 2.1 HoTTv4 code, trying to get it adapted to 2.4pre, and I don't much care for all the delays causing skipped frames. It seems to me that if the HoTT telemetry protocol requires ~2ms between bytes and can go up to 4ms (per previous posts), and the MultiWii frame period ...

TheBum

Resurrecting an old thread because the issue still exists on 2.3 and, soon, on 2.4. Has anybody adapted the code to run on 2.3 or 2.4pre? I see a movement afoot to incorporate FrSky telemetry, but HoTT telemetry has been left to languish. The GitHub page apparently hasn't been updated in ages: the l...

TheBum

The first question I have is why are you running 2.1? I'm fairly new to this MultiWii stuff myself, but I'm sure a lot of improvements and fixes have been made between 2.1 and 2.3.

TheBum

I'm attempting to build a serial cable to connect a Bluetooth 4.0 module to a RTFQ MultWii Pro Mini through the serial_0 JST-SH socket. I have a suitable crimper and can get pretty good crimps, but trying to get the contacts pushed into the housing is causing me no small amount of grief. The "w...

TheBum

ajmoore0351 wrote:How do I encorporate it into altitude hold?

Based on the comment at the top of that code block, you can't. Sonar poses a lot of challenges, not the least of which is scattering when flown over grass. I'm not surprised it hasn't been incorporated in the control loop yet.

TheBum

I think you mean "Flip Mega 3.5". If it's like the Flip 1.5 from a power standpoint, power comes from one or more of the ESCs. I know a few people, including myself, who have connected all four ESCs to a Flip 1.5 without removing the red wire from any of them and have had no issues.

TheBum

I have an HM-10 module on the way from China.

TheBum

What are some current BLE modules that will work with a MultiWii Mega board and this app? Most of the module information I could find was a couple of years old.

TheBum

Pre-2.4 r1729 does appear to have fixed the serial issue. As long as I left the USB cable disconnected for several seconds, the OLED and the channel telemetry looked good. The display would come up with what looked like a star field if USB was connected.

TheBum

Is there any reason the serialCom() invocation code in the SPEKTRUM version of readSerial_RX() couldn't also be used in the SUMD version of that function? I'll try to give it a test this evening. It worked...sorta. The update rate in the GUI is really low, so it's far from an ideal solution. I shou...

TheBum

Is there any reason the serialCom() invocation code in the SPEKTRUM version of readSerial_RX() couldn't also be used in the SUMD version of that function? I'll try to give it a test this evening.

MultiWii

Search found 35 matches

Re: HOTT Telemetry integration

Re: HOTT Telemetry integration

Re: 2.4 is finally here :)

Re: MultiwiiConf 2.4 Graphical Enhancements

Re: MultiwiiConf 2.4 Graphical Enhancements

Re: HOTT Telemetry integration

Re: 2.4 is finally here :)

Re: 2.4 is finally here :)

Re: 2.4 is finally here :)

Re: Direct Frsky telemtry data from MW FC

Re: Voltage sensor with improved resolution for MultiWii

Re: 2.4 is finally here :)

Re: 2.4 is finally here :)

Re: Goggle Code is Shutting down.

Re: Change Motor Pin Order

Re: FrSky S.Port Data into MultiWii, MSP & OSD (inc. cell gr

Re: FrSky S.Port Data into MultiWii, MSP & OSD (inc. cell gr

Re: Change Motor Pin Order

Re: help materials fabricated frame

Re: Change Motor Pin Order

Re: Graupner SJ Hott SUMD protocol

Re: pre 2.4 version r1729

Re: pre 2.4 version r1729

Re: Direct Frsky telemtry data from MW FC

Re: HOTT Telemetry integration

Re: HOTT Telemetry integration

Re: Multiwii pro 2.1 resets ACC after power cycle

JST-SH connectors are flustering me

Re: Someone please help me with sonar

Re: mini mega 3.5

Re: MultiWii GUI on iOS

Re: MultiWii GUI on iOS

Re: Graupner/SJ SUMD serial receiver addition

Re: pre 2.4 version r1729

Re: pre 2.4 version r1729