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The project is developing slowly. I´ve decided to change the physical concept to a flat box with LED integrated display on top of the dashboard after finding a perfect box. The display will have six (2+4) 7-segment digits that is seen just under the top of the steeringwheel. Push-buttons and knobs will be placed on the upper side of the box and can then be reached with my hands still on the wheel. -PERFECT!
Soon I may start to build the electronics. I have to decide if my CPU have time to update a multiplexed display often enough to avoid annoying flickering or if I have to go for parallel drive on all 48 display segments to get a steady light. Some moderns cars with LED rear lights are realy annoying in nighttime traffic because the flicker-rate is too low. -Rapid eye movements (such as normal when driving) leave an impression of bright red dots everywhere and makes me confused. I hate those rear lights! Volvo and VW are among the worst in swedish traffic and I don´t want to introduce that s--t inside my car!
When the display is finally set I can start the real work of designing the rest of the electronics and start programming. (Imagecraft C-compiler)
One big advantage when going from four to six digits is that I can have two digits contiously indicating my average fuel consumptopm while the other four digits show something else.
Here I´d like som help from others who use MPGuino or other FEC:s! -Which are the most important functions/data/parameters to have easily accessible while driving? And what functions are these systems missing?
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