1. A web console to control nanosatellites
Nahuel Garbezza

2. context
Satellogic builds nanosatellites using open
hardware and software technologies
@CubeBug1 launched, @CubeBug2 to be launched soon
they needed a visual console for improving
the interaction with the satellites

3. context
Satellite
sockets
Console
Radio

4. let’s see some of the key aspects of
the project

5. #1: discover the domain
we did test-driven development from the
beginning
a lot of concepts & patterns emerged

6. #1: discover the domain
let’s browse some classes :-)

7. #2: visual sending & reception of
packages
web interface using Seaside components
a lot of JQuery / Ajax
integration with DataTables JQuery plugin

8. #2: visual sending & reception of
packages
demo: let’s see the console running!

9. #3: display charts
timeline charts using Highstock JS library
(bindings with Smalltalk)

10. #3: display charts

11. #4: parse command definitions
code that runs in the satellite is written in C
we used PetitParser to extract the command
definitions

12. #4: parse command definitions
demo:
browse some PetitParser rules
configuration from the web interface

13. #5: let the users write custom scripts
built-in commands are ‘primitives’
console users know Smalltalk so…
we let them write Smalltalk code
scripting support using metaprogramming

14. #5: let the users write custom scripts
demo:
creating and sending scripts from the
console
some technical details

15. conclusions
great opportunity to work on a real project using
Smalltalk
personally, to gain experience on TDD, OO
design and Web development

16. thanks to
Hernán Wilkinson
Gera Richarte

17. end
questions/comments are for sure welcome :-)