Difference between revisions of "Category:Hamster"
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Revision as of 12:26, 30 March 2017
HamsterV3
HamsterV4
HamsterV5
Hamster in TEDX
Hamster TEDx
Contents
Hamster system
Robot's components
Each robots have two raspberry pi computers on board - master and slave, and a low level controller.
Master - Has a wifi connection to the hamster network, provides network access to slave. It also connected to the slave computer directly via ethernet cable.
Slave - Second computer, used primarily for slam/localization algorithms, connected to hamster network via master.
Low level controller - Arduino based board responsible for interaction with hardware components.
Operation modes
Hamster robot is capable of running mapping, localization or outdoor localization (using GPS and IMU).
Switching between modes:
In order to change operation mode publish std_msgs/String message to /mapping_command topic, containing on e of the following strings:
- slam
- localization
- outdoor
Example: <syntaxhighlight lang="bash" line='line'> rostopic pub /mapping_command std_msgs/String "data: 'slam'" </syntaxhighlight> <syntaxhighlight lang="bash" line='line'> rostopic pub /mapping_command std_msgs/String "data: 'localization'" </syntaxhighlight>
When switching from mapping to localization mode, the map is saved by the server, and loaded for localization algorithm.
Hamster wireless network
Router
- SSID 2.4Ghz: hamster_net
- SSID 5.0Ghz: hamster_net5
- Password: hamsterHAMSTER
- Network: 10.0.2.0
- Netmask: 255.255.255.0
- Gateway: 10.0.2.138
Hamster
- User = pi
- Password = hamster
Master:
- IP: 10.0.2.n/192.168.1.n
Slave:
- IP: 192.168.n.2
n - stands for agent id, e.g agent1 will have 10.0.2.1/192.168.1.1
Low level controller
Description
Arduino based board responsible for interaction with hardware components such as:
- Motors (drive and steering)
- Encoders (mainly used for PID controller)
- IMU
- Battery monitoring
- Cut-off (shuts down the platform when battery goes below certain voltage)
The LLC is connected to master computer via UART (serial)
Subcategories
This category has the following 5 subcategories, out of 5 total.
Pages in category "Hamster"
The following 14 pages are in this category, out of 14 total.
