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Re: [gpsd-dev] Additional data from external IMU sensor?

From: Gary E. Miller
Subject: Re: [gpsd-dev] Additional data from external IMU sensor?
Date: Mon, 11 Feb 2019 11:21:58 -0800

Yo Andrejs!

On Mon, 11 Feb 2019 14:53:45 +0000
Andrejs Cainikovs <address@hidden> wrote:

> How easy/painful would be to add external IMU (accel+gyro i2c sensor) 
> data to what already provided by GPS receiver?

Depends on how easy it is to read i2c data, and how well formed that data
is.  For a basis PC, maybe you need a USB/i2c adapter?  Maybe a RasPi
could read i2c on the GPIO lines?

> Basically, I would
> like to feed GPS receiver data along with extra ATT object with IMU
> data to the software.

You and a lot of other people.  There are a lot of cheap GPS+IMU
using USB and i2c made for drones.

> Gary wrote a while ago that gpsd had IMU support in the past: 

And the present.

> How big effort would be to add such a support now?

Dunno.  The devel is in the details.

> Where's a good place to start looking at?

As always, start with the data.  What does it look like>  How does
a daemon read it?

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin

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