difference() {
cube([30,25,20]);
    //hoop
    translate([15,12.5,-905]){
        rotate([90,0,0])
            rotate_extrude($fn=300)
                translate([900,0,0])
                    circle(d=25, $fn=100);
    };
    //pico
    translate([3.25,3.5,0])
        cube([23.5,18,12]);
    //pico usb port
    translate([26.75,8,6.5])
        cube([3.25,9,5.5]);
    //wifi
    translate([2.5,5,12])
        cube([25,15,5]);
    
};