Tag: Fix

Improving lift on IRIS+ with other propellers

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 of IRIS, this benefit is actually mitigated by the now shorter 9.5×4.5″ propellers. This means that while IRIS+ features a longer flight time than IRIS, the hover throttle (percent of throttle required to hover) is pretty much the same.

Battery Failsafe on IRIS+

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 closer look at the various settings that influence what happens on a Battery Failsafe event. Therefore let’s have a look.

Mounting the IRIS Telemetry antenna differently

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:

Protecting the IRIS Telemetry antenna against damage

On pictures of 3DR’s IRIS you always see the telemetry antenna in the back of IRIS pointing straight up (See Figure 1).

Copper shield for IRIS’ GPS module

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 either. So I decide to shield my GPS module with a piece of copper shield and find out what difference it makes.

Get rid of Jello with the Tarot T-2D gimbal

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, you can sometimes see the vibrations of the camera and the resulting Jello in the video footage. In this article I will show you how to fix this.