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Robot Arm | Interfacing 3Dconnexion Spacenavigator

Interfacing a 3Dconnexion Spacenavigator to Linux and mbed to control a small Robot arm built with Lego technic

MarkMark
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ongoing project
3Dconnexion Spacenavigator mbed raspberry pi robot arm USB Linux embedded linux lego

This project was created on 07/12/2015 and last updated 2 years ago.

Description

This Project shows an interface between 3Dconnexion Spacenavigator, Raspberry PI and mbed to control a small robot arm. This arm is built with Lego technic elements and Servos. This combination (mechanical and electrical side) enables very fast prototyping.

How To:
Raspberry Pi:
make a script that opens/read /dev/hidraw (USB interface to spacenavigator)
two line are given from this device. Use the first byte to identify them. Every axis command consists of two unsigned bytes. one for the main position and the second for the value.
After finding out the protocol, extract and calculate the main values. Define a SPI interface for sending the data to a microcontroller
No special libraries needed to compile !! I stored the script in /etc/rc.local/ to run it at the start up

mbed:
Define a SPI interface and get the values from R-PI.
Sending values to the servos

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xmetrix wrote 01/21/2019 at 08:04 • point

Can anyone please share the script that reads /dev/hidraw*  and parses it into usuable information. thanks

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