Hardware

Lisa/M Bottom

As promised, we want to talk about projects we are currently working on. One of them is Lisa/M.

Lisa/M will be the medium sized Autopilot based on the STM32 Cortex-M3 microcontroller. It is part of the Lisa series of Autopilots. It is very small (50mm x 25mm), about the size of an RC receiver. We want it to be as affordable as possible so that more people can join the autonomous aircraft revolution. The final cost still needs to be determined, as we are not done with the development yet.

Many Paparazzi followers will be familiar with the popular TINY and TWOG fixed wing autopilot boards that have allowed so many UAV pilots their first taste of autonomous flight. A few will even have had the pleasure of using the Booz multicopter autopilot board. All three of these designs are based on the Phillips LPC2148 microcontroller, which has proven to be a solid performer in this role. Antoine Drouin, the genius behind the Booz board, has once again outdone himself with a completely new series of autopilot boards based on the STM32 ARM Cortex-M3 microcontroller, which has the umbrella name Lisa. The first available is the Lisa/L and it is this board that will be explored in coming articles.

After many years of development, so many new autopilot boards and aircraft types have been added that a sourcecode reorganization was needed. This undertaking is started and will simplify the continuous evolution of the project.

To benefit from these important changes, it only requires you to update your airframe configuration document once. After you have updated, you should not notice the significant reorganization that is going on behind the scenes. This change will benefit your aircrafts flying successfully for the years to come. The required changes are described on Update Your Airframe Configuration.

The new baby autopilot is born. His name is TWOG, he weighs 8 grams and is 40.2 x 30.5mm long. He’s in good health and looks a lot like his mother Tiny v2, except for the GPS receiver. The proud parents invite you to visit the pictures and technical information album…

A number of vendors are now offering assembled and not-assembled autopilots, sensors and accessories. The software is written, the hardware is built, what are you waiting for? Getting started has never been easier! More details on the Get Hardware page.

Looking for a small, light and cheap ground station? Paparazzi runs on the ASUS eeePC out of the box (after installing the Debian Paparazzi packages). Tested on the pre-installed Xandros distribution, on a standard Ubuntu and on the preconfigured eeeXubuntu.

The new Tiny 2.1 autopilot flew nicely in a Funjet for the first time.

Jeremie Vacher, a student at ENAC, has developed a tracker for antennas. It is functional but still needs a little bit of polishing. Anybody interested?

Antoine continues to make great progress toward the holy grail of 17 state inertial navigation and releases a video showing the performance of the 7-state Kalman filtered IMU providing the attitude-heading reference system (AHRS) on his quadrotor. Note how much coffee was consumed in preparation for this video. More info on the IMU is available on the sensors page. Also, be sure to admire the schematics and source code!

Paparazzi has come a long way since it’s creation in 2003. For a bit of nostalgia browse the original website.