Application 5929

my best creation was a lock that you could activate by placing certain amounts of sand down 5 holes in the ground. The way it works is in four parts. first was the main line of redstone running from a redstone torch to a piston door. Second was the lock that would start with each piston extended blocking the redstone signal from the torch to the door and to retract the piston you would need to get a certain amount of sand up to a restone torch that once the sand was at the right height the redstone signal would go through the block and turn off the redstone torch that is keeping the piston extended letting the redstone signal from the other torch get to the door and open it. i repeated the pistons five time so it was five different amounts of sand you would need to place. The third part is a redstone torch above the block that you are meant to place the sand to so that if you place the sand one too high the redstone torch will send a signal through the sand extending a piston at the end of the pistons for the lock so it will block the signal not letting the door open. The final part to the lock is the reset lever which works by when want to reset the lock you flick the lever and it will retract a sticky piston that is holding a block to keep the sand up. the pistons are set up so that it has repeaters retracting the pistons one by one and the last piston has a redstone torch that is sending a signal through the sand keeping another torch off and so when all the sand has fell down the signal will be broken letting the other torch activate, playing a note block letting you know to flick the lever again pushing the piston back out so you can try placing the sand again.