LED change

With the presentation looming our utter most concern is for the buggy to complete the course and this has led to some inspired last minute changes. So far throughout testing 2 red LEDs were being used with the intention of carrying these on to the presentation but unfortunately or rather fortunatelywe have discovered that we are these are causing calibration problems.

This is due to the red LED not providing enough constant elumination to the LDRs so as to maintain the same binary analogue values. This has led us to test and switch to using to white LEDs even though they are more costly. This is simplly because the illumination they give is far much superior that what we have been testing so far and therfore this should boost our line following chances and at the same time reduce the need for constant re-calibration.