VisibEL is a tangible map of Sweden modelling the electricity production. There are cities, placeable power plants and factories that can be connected to the power grid. It is an educational game which is based on scenarios. The main users are children between the ages of nine and twelve. By playing this game, children can learn about different types of power plants, how much energy they produce and how much they cost to build and run...
Please visit our website and visit us at the exibition IDXPO at Lindholmen Science Park.

Saturday 10 April 2010

Gauge meter circuit

In my point of view, pull-up resistors for DS2408 are always needed. I did test on Friday, before I connected them(9 10k resistors), P0~P7 never become high. As long as I connected them as this picture show, I can controll P0~P7 for high or low.
The second photo shows the number of voltage after R/2R DAC and the after Opa.

1111 1111 4.80V -->1.93V
1111 0111 2.98V -->1.21V
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