Difference between revisions of "Lisa"

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=== Documentation ===
=== Documentation ===


The documentation about [[Lisa/L]] has been split in two: You can have a look at the [[Lisa/L]] user manual or the [[Dev/LisaL]] developer manual or look at pictures on the [[LisaL_Gallery]] gallery page. A link to LisaL Quadrocopter [[User/LisaL/Tutorial/Quadrocopter]]. A link to LisaL FixedWing [[User/LisaL/Tutorial/FixedWing]]. Some more lisa links [[Lisa USB]] final [[Lisa Logitech Camera]].
The documentation for Lisa/L is broken into several parts due to board complexity and Gumstix [[Overo]] integration.
* [[Lisa/L|Main Documentation]] - primary hardware documentation and intro to software
* [[Dev/LisaL|Additional Developer Documentation]] - additional advanced hardware and software documentation and notes
* [[LisaL_Gallery|Lisa/L Gallery]] - nice pictures of Lisa/L
* [[User/LisaL/Tutorial/Quadrocopter|Unfinished Rotorcraft Tutorial]] - rotorcraft tutorial, needs considerable work
* [[User/LisaL/Tutorial/FixedWing|Unfinished Fixedwing Tutorial]] - fixedwing tutorial, needs considerable work
* [[OMAP|Gumstix Integration Intro]] - intro and documentation listing for integrating a Gumstix Overo with Lisa/L, including for USB devices and cameras


== Lisa/M ==
== Lisa/M ==

Revision as of 16:16, 16 March 2012

Lisa ( the Lost Illusions Serendipitous Autopilot) is a new range of autopilots based on STM32 microcontrollers ( CortexM3@72Mhz ) designed to run Paparazzi. There's no such thing as a perfect autopilot, only autopilots adapted to a particular purpose. This is the reason why Lisa comes in different flavors for different usages.

The first members of the family are:

  • Lisa/L, a design where the STM32 is associated to a gumstix Overo.
  • Lisa/M, a design focusing on cost and simplicity.
  • Lisa/S, a design focusing on size and weight.

Lisa/L

Description

Lisa/L is a dual processor board autopilot designed to allow the possibility of using Linux for Paparazzi airborne code.

Lisa l bloc diag simple.png Lisa l top.png Lisa l bot.png

Documentation

The documentation for Lisa/L is broken into several parts due to board complexity and Gumstix Overo integration.

Lisa/M

Description

Lisa/M is a great general purpose small-footprint autopilot. There are currently two versions that have been produced. Detailed documentation can be found here:

Lisa/M v1.0 Top View

Usage scenarios

There are many potential applications for the small, relatively inexpensive and flexible Lisa/M. For regular Autopilot boards a full Lisa/M board is needed. For some scenarios just a basic Lisa/M without IMU and barometric pressure sensor is needed, which reduces board cost. Here are some ideas (not all have yet been implemented):

  • As a basic Autopilot
    • To use the Lisa/M as an autopilot, we need to attach a GPS receiver. A nice uBlox LEA-5H or newer will perform great.
  • As an advanced Autopilot
    • Additional sensors for measuring airspeed, current, etc. would enhance a fixed-wing airframe.
  • As a servo extender
    • Sometimes being able to control seven actuators is just not enough. Large airframes may require flaps or an airbrake and automatic landing facilities. Maybe special ACL/Nav lights, or four cameras with zoom. By using a coupled second basic Lisa/M and connecting this to the master AP board we can extend the amount of servos. Large airframes can also benefit from remote and/or redundant servo drivers.
  • As a Safety Pilot Device
    • To provide an extra safety level required in some UAS challenges. A second Lisa board can make it easy to adhere to the rules for such a challenge.
  • As a Data Logger
    • Maybe you have a need only to log all kinds of data, like temperature, volts, amps, height, airspeed, and not control the aircraft. For this we can setup a Lisa/M board. Collecting this data can be to a storage medium like an micro SD card. Sometimes there is no need for realtime data collection through telemetry but just for storing a huge dataset.
  • As a Camera controller
    • On some models that do not require many servos (for example - flying wing with only 3 channels used), spare channels can be used for camera control. In addition, it could be used as an independent pan-tilt unit (PTU) controller.
  • As a Airframe Tracker
    • Tracking an airframe for an antenna or camera on a tripod is one of the many options to use a Lisa/M Board.

Lisa/S

Lisa/S is only a project at the moment. The focus for this design is size, weight and power consumption. The intent is to produce an autopilot suited for the smallest airframes. For now just a CAD rendering to wet your appetite compared to the Lisa/L, the S is the lower board.

Lisa s cad.png