Quadrino "Rev 1D"

Latest MultiWii Firmware

The latest version of the MultiWii is version 2.0 Pre2 (2nd Release Candidate) released on March 13th 2012. MultiWii is working up to version 2.0 and this is the second candidate to having a stable version 2.

I've personally tested this out on the Quadrino and overall this is an excellent new release! Acro (gyro) flight is noticably smoother, it reminds me of the flight of a dragonfly! It's just smooth and maneuverable!

Autolevel now contains an auto tuning feature which is enabled in this firmware. This auto-trims the autolevel during flight. Trimming your autolevel was always a bit of a pain. It wasnt a hard process once you did it a few times, but it tripped up quite a few new users to MultiWii. Now we can look forward to great auto-leveling from the get-go!

Altitude hold works in this version with MS5611 barometers. Unfortunately however, most of you out there have Quadrinos with BMP085 barometers. So the work is not done and I am still hopeful that a solution for BMP085 is possible. This release is still young so it may not be long now before it works with BMP085. I havent given up yet.

With a little soldering skills it is also easy to upgrade your existing Quadrino to use a MS5611. There are two solutions, for V1D boards you can solder a MS5611 directly to the board - your board has an "unpopulated" PCB footprint for it. Second, and probably easier is to just buy a MS5611 breakout board and attach this sensor through the I2C sensor bus, you'll want to use the 4pin I2C header. I'll follow up soon with a tutorial on that.

Head-Free mode (Care-free)

MultiWii version 2.0 includes a new feature called Head-free mode that is great for beginner flyers or for times when you lose orientation of the copter. Do you fly in the dark? With Head-free mode the copter essentially has no "front" and roll/pitch will react according to your perspective. So no matter the copter orientation, joystick forward is fly away, back is fly towards you, left is bank left, and right is bank right. It's that simple and it works!

To illustrate, I had just got my Gaui330 flying again and due to some twisted arms I had a nasty yaw problem. The copter was spinning like a top a full 360 degrees about every 3 seconds. Instead of compensating with yaw stick, I turned head-free mode on. I flew my spinning top without any problem. It was pitch black out and all I could see is the blue stable light yet I could still fly the copter around even with it spinning!

[notice class="attention"]When upgrading from MultiWii 1.9 to 2.0 your accellerometer (ACC) sensor will read crazy. This is expected due to a change in the ACC scale/calibration. Simply place the quad on the table or floor as level as possible and hit the CALIB ACC button. Two seconds later all sensor lines will read normal again. The ACC Z parameter, in case you notice, will now settle at a 256 level as opposed to the old 512 level.[/notice]

Latest Firmware

So get to it, read the tutorial on Flashing your Firmware and try this release out!

Stable Version

Download MultiWii V2.1 for Quadrino Zoom "Rev 1D" with BMP085

Download MultiWii V2.1 for Quadrino Zoom "Rev 1D" with MS5611

Beta Version

Download MultiWii V2.1 DEV1 for Quadrino Zoom "Rev 1D" with BMP085

Download MultiWii V2.1 DEV1 for Quadrino Zoom "Rev 1D" with MS5611

MultiWii 2.0

Download MultiWii V2.0 for Quadrino Zoom "Rev 1D" with BMP085

MS5611 Barometer

On some boards sent out to developers a MS5611 baro was mounted on the board. Until March 2012 I could only get samples of the MS5611, 21 to be exact so the chances of having a V1D board with MS5611 are rare. Use the two image below to determine if you have a BMP085 or MS5611 barometer.

Download MultiWii V2.0 for Quadrino Zoom "Rev 1D" with MS5611