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Re: [Paparazzi-devel] 1BitSquared - Elle0 autopilot release

From: Piotr Esden-Tempski
Subject: Re: [Paparazzi-devel] 1BitSquared - Elle0 autopilot release
Date: Sun, 29 Nov 2015 17:40:53 -0800

Hi Reto,

I will continue working on more wiki information as time allows. I am glad that it is already a bit useful. :)

- For the power supply you can use any uBEC that outputs roughly 5V. You should connect a voltage divider appropriate to the battery you are using to the ADC V pin on the power connector of the Elle0. You can connect an analog current sensor to the ADC A pin.
- If you look into the spektrum settings there is an option for a secondary Spektrum satellite. We have explicit support for that feature, it even tells the secondary satellite that it is secondary. (there are some radio protocol reasons for that) So this way you can use true diversity with two spektrum receivers. I try to build all my aircraft using diversity.
- I see the confusion here, Elle0 is not meant to be JUST a racer quad autopilot. You can use it on airplanes, massive octocopters and much more too. Think of it as a lower cost Lisa/MX stripped to the most essential features and fitting a commonly used hole pattern. Also the some of the servo pins can be used for other functionalities than servos. For example you can use S7 or S8 to drive ws2812 RGB LEDs (you need a 5V level shifter for them…) or you can connect a CAN transceiver to them. You can use S1 and S2 to get another UART. Everything will be much clearer when I have the “verbose legend” diagram ready. I was trying to keep the flexibility spirit of Lisa/M alive in Elle0. :D

I will be working on example configuration diagrams just like I have done for Lisa/M before. :) Making all those diagrams is quite time consuming so you have to bear with me. :D

I hope this answers your questions! :)


On Nov 29, 2015, at 1:24 PM, Reto Büttner <address@hidden> wrote:

Hi Piotr

Now there is some information on the wiki. Many of my questions are answered. Thanks!

Some questions remain:

- How is the power supply realized? What external power supply is needed? What voltage levels does Elle0 accept? Can Elle0 supply all eight servos with sufficient power?
- Why does Elle0 have two spektrum RC inputs? Is it typical to connect two receivers?
- Why does Elle0 have eight servo outputs? Is it typical for such a system carrying such a tiny AP to have so many actuators?

I like the four status LED and the bind button.

An example configuration would still be great!

Best regards

2015-11-26 18:05 GMT+01:00 Reto Büttner <address@hidden>:
Hi Piotr

Cool autopilot!

I consider to replace my old TWOGs with this board.

Unfortunately the Elle0 page on the Paparazzi Wiki seems not to be up and running yet.

Could you clarify what external components are needed and on what electrical interfaces and physical connectors they are connected:

- Telemetry modem
- RC receiver
- IMU (?)
- Baro (?)

An example configuration for a simple fixed-wing aircraft (3 servos) would be great. E.g:

- Elle0
- GPS (recommended type?)
- Telemetry modem (Digi XBee might be the easiest to connect?)
- Spektrum remote receiver with PPM output (SPM9645 might be the easiest to connect?)
- Programming cable (USB)
- What else?

Best regards

2015-11-26 13:58 GMT+01:00 Piotr Esden-Tempski <address@hidden>:
Hi everyone,

As you might know here in the US there is a tradition to offer discounts on the Friday following Thanksgiving. So to thank all of you for being part of this awesome community we decided to offer some discounts in the 1BitSquared store for the whole weekend.

Also, today marks the release of the Elle0 autopilot. We have been working very hard and long on this new Paparazzi autopilot. Our main goal was to make it as affordable as possible without compromising on the power and memory needed to run Paparazzi.

We are still working on the documentation, but hopefully the wiki page will be filled with more details soon. For now you can take a look at the Pre-Order page. Elle0 will start shipping early 2016.

I hope you have a great holiday season.

Piotr Esden-Tempski and the 1BitSquared team

Founder: 1BitSquared
Paparazzi UAV Developer


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