IRIS+ runs the opens-oruce flight control software APM:Copter. With version 3.2 – which was released on November 7th, 2014 – an interesting new feature was introduced: Extended Kalman filter (EKF). On your IRIS+ the EKF uses rate gyroscopes, accelerometer, magnetometer, GPS and…
You will quickly reach the point, where you want to replace the standard charger that comes with a 3DR IRIS+. This charger not only takes a long time to charge your Lipos, but it also doesn’t provide you any feedback…
eCalc xcopterCalc is a great online Multicoper Calculator, which supports you in choosing an adequate motor setup – along with propellers and ESC – for your electric RC Multicopter. Even though both IRIS and IRIS+ come as an Ready-To-Fly model,…
The all new IRIS+ comes with an upgraded motor as well as propellers versus the previous IRIS. While the new 920 kV motor along with the 5100 mAh 3S Lipo provides added lift of IRIS+ over the 850 kV motor…
In the IRIS forums at DIYDronres, Ardupilot, and the IRIS Facebook group often the question comes up after the “best” or “right” battery failsafe setting for IRIS. After ruining one of my Multistar 3S 5200mAh Lipo packs over the weekend, I had a…
Unfortunately 3DR does not offer a dedicated FPV kit for IRIS and the FPV kits available from 3rd parties do not include an On-Screen-Display (OSD). Therefore here the instruction on how to assemble your own FPV kit – no soldering…
In a previous post I already wrote about the problem with the the default antenna mount position of IRIS. If you actually look carefully, you’ll notice three problems: When flipping over IRIS during a crash landing you can easily damage the antenna…
In the IRIS forums at DIYDronres, Ardupilot, and the IRIS Facebook group I have seen reports from various users who have complained about low HDOP (Horizontal Dilution of precision) reported by their IRIS when trying to arm in Loiter or Auto mode (Both are GPS…
On pictures of 3DR’s IRIS you always see the telemetry antenna in the back of IRIS pointing straight up (See Figure 1). Turns out that this configuration is actually a bad idea. Especially with the long legs (as depicted in…
Various folks in the IRIS forums at DIYDronres, Ardupilot, and the IRIS Facebook group have complained about poor GPS performance on their IRIS. Others (including myself) weren’t quite sure if there was something wrong with their GPS module, but weren’t quite stunned with the performance…
Due to the rather poor flight performance of the 3DR IRIS with Gimbal and long legs on 3S batteries, I was looking into flying with 4S batteries, along with reducing the weight of the quad. In this post I want…
IRIS pilots will quickly get tired of buying Alkaline AA batteries for the R/C transmitter and will also realize that this can turn into a costly part of our hobby. Time to replace these batteries with a Lipo. Required materials…
Have you noticed Jello in your video while using the Tarot T-2D gimbal. Here the Jello is not coming from vibrations due to the motors or props, but the gimbal itself. Even with IRIS on the ground and motors turned off,…
I would like to keep the GoPro camera in the Tarot Gimbal all the time. Even for charging or downloading the images the videos and images via USB. But so far I always had to take the camera off the Gimbal as…
With the current short legs IRIS hangs just a few millimeter above the ground. When taking off from or landing in (wet) grass – such as on a Baseball field – the lower body sits in the grass and gets…
I use a Google Nexus 7 as Ground Control Station (GCS) together with my 3DR IRIS R/C radio transmitter. Initially I placed the tablet on the ground next to me while flying and solely listened to the voice commands. This was not…
In the IRIS forums at DIYDronres, Ardupilot, and the IRIS Facebook group I have seen reports from various users who have either complained about poor flight performance of their IRIS, or had crashes due to performance loss towards the end of a flight. All…
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