Dispenser doesn't work if powered too quickly

[kit-la]

Describe the bug If powered through a very short pulse, dispensers will not dispense. However, if powered through other means at the same time, it will work normally (see gif).

Expected behavior It should dispense whether it is powered by a short pulse or not.

GIF

Version info (please complete the following information):

• Version 7.1_01

[Bigjango13]

This is not a bug, this is two things:

• Piston Quasiconnectivity
• Dispenser BUDing

Motion sensors are not solid blocks, so the Redstone dust doesn't power the dispenser. The torch does (I'm not 100% sure about it, but I think it is), when the motion sensor detects the block the dispenser is updated and dispenses. The reason the piston activates is because the redstone is powering it due to QC.

[Bigjango13]

For example, here is a neat use of dispenser BUDing (albeit not very useful): When any redstone dust is broken, the dispenser will activate.

[kit-la]

Motion sensors are not solid blocks, so the Redstone dust doesn't power the dispenser. The torch does (I'm not 100% sure about it, but I think it is), when the motion sensor detects the block the dispenser is updated and dispenses. The reason the piston activates is because the redstone is powering it due to QC.

It can be replicated by using a lever, but i'm using a touchpad so i couldn't pull it off consistently. The sensor thingy was just to make the pulse short and consistent at the same time, and the sticky piston just to visually see the short pulse. Thanks for the detailed response. I didn't know about BUDing, that's really cool :).