Imagine that you wanted to start making a new orienteering map, and wanted to use an old map or image as a basis. Here’s one way to achieve that.

We’ll use Open Orienteering Mapper for the project, and some reference points from Open Street Map.

The process we’ll be following…


This article, part of the Arduino Radio Control Model Plane Altitude Hold series, describes dealing with jitter in the altitude readings.

Jitter

Even when the altimeter is motionless, successive readings can differ from each other. I’ve observed readings moving by +/- 3 metres. …


This article, part of the Arduino Radio Control Model Plane Altitude Hold series, describes sending radio control signals from the Arduino to the aircraft controls.

Background

The Servo library does all the work for us. …


This article, part of the Arduino Radio Control Model Plane Altitude Hold series, describes reading radio control signals using the Arduino.

Normally the on-board radio receiver would be directly connected to the servos that operate the control surfaces, or to an electronic speed control that controls the motor. …


This article, part of the Arduino Radio Control Model Plane Altitude Hold series, describes the technique that will be used to read altimeter data via the I2C bus into the Arduino.

Having a way to read the altimeter is essential to the altitude hold project.

Connecting the devices

It is simple to connect…


This article, part of the Arduino Radio Control Model Plane Altitude Hold series, describes the hardware environment for the project.

None of this hardware will be altered in this project.

Arduino

I’ll be using the duinotech Nano for this project. …


This collection of stories is about my attempt to make an altitude-hold device for my radio control model plane.

I’m writing these articles as I go, so there is no guarantee that they will lead to success. The whole project might be a terrible failure. This isn’t a set of…


Karttapullautin generates data representing dot knolls and depressions, and saves it in the dotknolls.dxf file. The detected.dxf file contains supplementary information.

I used Open Orienteering Mapper to add both files as templates.

The file contains points that are tagged with useful labels, such as uglyudepression or dotknoll. The points are shown as dots, but the dots are usually partially obscured by the text labels.

Using dotknolls.dxf as a template

Now it is easy to draw the appropriate symbols in the right places.

You can see in the example that my installation of Open Orienteering Mapper doesn’t do a great job with the typeface for the labels.

This article is part of the Orienteering Mapping with LiDAR, Smartphones and Free Tools series.

Polite and constructive responses are always welcome.


The Karttapullautin generates cliff data and saves in the c2g.dxfand c3g.dxf files. These files represent passable rock faces and impassable cliffs respectively.

The cliff files can be added to a Open Street Map as a template.

The Karttapullautin cliffs are represented a mass of short lines.

Zoomed-in view of cliff lines generated in Karttapullautin

Now it is easy to draw the appropriate symbols in place using the cliff data template.

The rules for generating cliffs can be tweaked. They reside in the pullauta.ini text file.

This article is part of the Orienteering Mapping with LiDAR, Smartphones and Free Tools series.

Polite and constructive responses are always welcome.


I have used OL Laser to generate cliff data — the process is described in a separate article.

The OL Laser cliff data can be added to our map. The cliffs are a lot simpler than the corresponding objects generated by Karttapullautin.

Zoomed-in view of cliffs generated by OL Laser

Now it is easy to draw the appropriate symbols in place using the cliff data template.

I noticed that using the OL Laser cliffs as a template worked better than importing the save data file into the map. The positioning was correct when the data was added as a template.

This article is part of the Orienteering Mapping with LiDAR, Smartphones and Free Tools series.

Polite and constructive responses are always welcome.

Greg Wilson

Hopeless at orienteering, rubbish at flying radio controlled planes, but enjoys both activities anyway.

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