There are so many ways to do a rough 0.5 sec timer. such as dart trap speed is 45 tiles per sec. so 22 tiles=0.5sec(or dart trap speed in honey is 45/4, so 5-6 tiles equal to 0.5 sec). then u could do 0.5 timer by use two 1sec timer(gap between them are 22 tiles or 5-6 tiles in honey, activating them by dart trap and teal pressure plates).
if u wanna build a setup for accurate 0.5 timer. u need logic gate.
An example for 0.5sec timer= 2hertz.
30/3/5=2
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