This is blog post about making the 'arena' for the Something Over The Rainbow challenge.
9mm MDF 2440mm x 1220mm board - £16.80
Corner Brace 40mm - £7.74
3.5 x 12mm screws - £2.88
Blackboard paint - £5.90 (£11.60 as second coat was needed for removing grey quarter circles)
Art Attach PVA glue - kids had grown up sufficiently not to notice half is missing
Total: £33.32 (£39.32 - with second coat of paint)
Start of the build: [gallery ids="1215,1216" type="rectangular"]
Ready for carrying it around:
Checking the size of the arena vs rover:
First, live test...
... has successfully passed - with a hamster!
[gallery ids="1206,1205" type="rectangular"]
Putting it all together:
Question: Grey corners or not?
First test of software coloured balls detection (happy path - almost no cheating):
(don't get confused - camera is mounted at 90º CCW)
Update: Patience is a virtue... So mere couple of hours all was done:
So, here we go again - second coat of paint:
Grey quarter circles: now you see them - now you don't!
And - over the weekend we discovered that screws on the bottom of the arena have bad habit of damaging furniture (i.e. dinning tables). So, here are finishing touches to address it:
[gallery ids="1223,1222,1221" type="rectangular"]
Next step: coding!