User:Munin295/Clock circuit

Wait for 1.8

 * Cooldown Hopper Clock


 * 1×5×2 (10 block volume)
 * clock output: up to 27 minutes off, 4 ticks on


 * This clock uses a command block to slow the hopper transfer rate. The exact command will depend on the direction the clock is facing, but for clocks facing the positive X direction it will look something like this:, where X is the number of game ticks (up to 32,767) to hold the item in the back hopper.


 * Hoppers usually have an 8 game tick cooldown between transfers (4 redstone ticks). The command block gets activated 2 game ticks after the item enters the back hopper (due to the comparator delay), so setting X to 6 would produce no change. Thus, this clock will have a clock period of 8 game ticks for the front hopper, plus X+2 game ticks for the back hopper, for a total of X+10 game ticks or X/2+5 redstone ticks.


 * Variations: The output comparator can be replaced with a redstone torch on the command block, producing a signal strength 15 output. An additional command block can then be activated by the torch to set the cooldown of the other hopper to change the pulse length.


 * Earliest known publication: 2 February 2014