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  1. E

    Outdoors wireless commumication between PICAXEs

    Hi all One of my A level students wants to build a system that has several (initially 5) units. Each unit to be equipped with a lamp and a button switch. On a command issued from the master unit the appropriate slave lights up until the user pushes the button on the slave unit. The master unit...
  2. E

    Light Gate Timer

    Hi All I would like to make a light gate timer for timing F1 in Schools CO2 rocket cars. In essence the cars are tethered rockets that are fired up a 24 meter track. A slow car takes about 2 seconds to cover the distance, but competitive cars (Formula 1 class) cover the distance in about 1.02...
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