Hardware

Lisa/M for developers

20 Comments


Hello everyone,

After many months of hard work we have finally reached a version of Lisa/M that is ready for a wider range of developers. Although there are still some things missing that would allow a beginning user to use it with ease, we decided it is better to provide it to all of the other brilliant non core developers and users. You can find out more about it in the Paparazzi Wiki. A big thanks go to OpenUAS for his great help with the documentation.

And before you start asking, it is not fully Open-Hardware YET! The schematics are available in the SVN as well as in the Wiki. The eagle board layout files will follow soon.

Let us know what you plan to build with this autopilot. Also if you have built an aircraft with Lisa/L or Aspirin we would be very happy to see them. Just drop a comment below with a link to a picture. Let’s spread the word of what is possible with Paparazzi!!!

Let’s get flying!

Cheers Esden

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20 thoughts on “Lisa/M for developers”

  1. Why not to use a smartphone for paparazzi? They have a lot of sensors and a good processor. We should use an iPhone or Android phone. Is there this king of projects?

    1. Hi,

      The problem with a cellphone is mostly the IO, it does not have i2c, several serial interfaces, PWM outputs and so on. Also most of the phones don’t have sensors that can be read out with high enough frequency and/or have enough range to deal with the accelerations and angular speeds present in small flying aircraft.

      Also aircrafts tend to crash from time to time, I would be scared putting the $600 IPhone on it. 🙂

      Still I think it is a nice challenge to try doing something like that, tell us about it when you try it. 🙂

      Cheers Esden

    1. Hi AJ,

      Joby Robotics is experiencing some technical difficulties. I don’t know about their ETA of having it back up and running though.

      Cheers Esden

  6. Hello Esden,

    I’m doing a research comparing several autopilot products out in the market. I chose Lisa/M as our reference Paparazzi product. However, I could not find any information regarding the operating temperature of this device. Is there any information available?

    1. Hi thanks for asking,

      That is a very good question. We did not conduct maximum temperature testing for Lisa/M. I only know that we were flying with Lisa/M 1.0 in the desert at 60C and then in the winter in Germany at -10C.

      I know that other controller boards like the tiny and twog are being used in polar expeditions. But then they are encapsulated in styrofoam to keep them warm.

      We will not add any official guaranteed temperature specifications to Lisa/M 1.0 any more as that is an end of life product.
      We may add temperature specification to Lisa/M 2.0 though as soon as we get a chance to do temperature testing.

      Cheers!

  8. Is there a step by step guide for gathering a quadrocopter using LisaM/Aspirin ?

    I mostly intrested on PID tuning part 🙂

    Met

  9. we are having a paparazzi_tiny 2.1 board , we would like to know if there is any open source ‘c’ code for a quadcopter that can be implemented on this board.

    1. Hi,

      As far as I know paparazzi does not currently support rotorcraft code on the tiny boards.

      It should be practically possible to connect an Aspirin IMU to the tiny board and make the rotorcraft code work on a tiny. I don’t see a reason why that should not be possible.

      Rotorcraft codebase is currently known to work on the LPC based Booz boards and the stm32 based Lisa/L, Lisa/M and Lia boards.

      Cheers Piotr

  10. Thank you Esden,

    can you please suggest which files of the rotorcraft code need to be modified in order to make it work for a quadrotor.

  11. I would like to know the procedure for calibrating esc for a quadcopter which I am planning to fly using paparazzi tiny autopilot along with aspirin imu.

  12. somebody please provide a solution for the above mentioned query. I have built the quad frame, as well mounted the motors but unable to calibrate the ESC’s .

    Thanks in advance,
    sahul

  13. What do you mean with calibrating the esc?

    Also you may want to ask questions like that on the paparazzi mailinglist by subscribing here: https://lists.nongnu.org/mailman/listinfo/paparazzi-devel and after that writing an email to paparazzi-devel@nongnu.org. There are much more people reding your questions and you are more likely to get an answer faster. Also #paparazzi channel on freenode is a good place to ask your questions. http://paparazzi.enac.fr/wiki/Contact

    Cheers Esden

  14. Whats the difference between paparazzi booz and twog hardware ,also I would like to know the feasibility of implementing rotorcraft on a twog autopilot. Somebody please help me in this regard.

    Cheers,
    Viktor.

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