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    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MCPE-14578] Broken Piston Circuits</title>
                <link>https://bugs.mojang.com/browse/MCPE-14578</link>
                <project id="10200" key="MCPE">Minecraft (Bedrock codebase)</project>
                    <description>&lt;p&gt;I found 3 types of piston circuits that do not work, but it&apos;s easier to search them on YouTube than it is for me to try to explain them. Mumbo Jumbo is the best person to look for. The circuits are Double Piston Extenders, Redstone Torch Keys, and T-Flip Flops.&lt;/p&gt;

&lt;p&gt;I&apos;ll try to explain what each circuit is, but I still recommend searching YouTube, as there&apos;s more than 1 way to build each type of each circuit. I&apos;ll provide links to tutorials of each circuit type.&lt;br/&gt;
A Redstone Torch Key lets you place either a redstone torch or redstone dust on a block to activate a circuit. When activated, the key will be destroyed by means of a piston, while also activating a separate circuit. &lt;a href=&quot;https://youtu.be/zhg67kberPw&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/zhg67kberPw&lt;/a&gt;&lt;br/&gt;
Double Piston Extenders are pretty much self explanitory. It fires 2 sticky pistons to push a block 2 blocks forward when powered. When turned off, it retracts both pistons as well as the attached block. The issue here is that the redstone fires too quickly to properly retract both pistons and the block back to their original positions. &lt;a href=&quot;https://youtu.be/R30ACyF8NHM&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/R30ACyF8NHM&lt;/a&gt;&lt;br/&gt;
A T-Flip Flop turns almost any circuit into a lever. In a piston-powered T-Flip Flop, a sticky piston is given a 1 tick pulse. It pushes and retracts so fast that it does not pull the block back with it. But when powered again, it does pull said block back. A piston T-Flip Flop is commonly used alongside a Torch Key, as that circuit actually does give off a 1 tick pulse. &lt;a href=&quot;https://youtu.be/9nEWPCSRxOI&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/9nEWPCSRxOI&lt;/a&gt;&lt;br/&gt;
The last YouTube link features 2 circuit types: the Monostable Circuit, and the T-Flip Flop. The Monostable is covered in the first half of the video, and does work as it should. But the piston T-Flip Flop covered is only 1 of many versions of that particular circuit.&lt;/p&gt;</description>
            <key id="142137">MCPE-14578</key>
            <summary>Broken Piston Circuits</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="7">Invalid</resolution>
                                            <reporter username="AgentCPU0">Don Nichols</reporter>
                        <labels>
                    </labels>
                <created>Fri, 3 Jun 2016 15:58:46 +0200</created>
                <updated>Thu, 9 Jun 2016 11:46:36 +0200</updated>
                            <resolved>Tue, 7 Jun 2016 21:56:02 +0200</resolved>
                                    <version>0.15.0 Beta build 1</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                            <comments>
                            <comment id="311370" author="kaleb418" created="Tue, 7 Jun 2016 21:56:02 +0200"  >&lt;p&gt;This issue is &lt;b&gt;Invalid&lt;/b&gt;. Please create seperate tickets for each bug/circuit, unless the issues are caused by the same bug.&lt;/p&gt;</comment>
                            <comment id="311367" author="jtfess" created="Tue, 7 Jun 2016 21:52:24 +0200"  >&lt;p&gt;I have issues with a piston T-Flip Flop as well. &lt;/p&gt;

&lt;p&gt;I have gotten a mono-stable circuit to work. It does have visual glitches but still works.  &lt;/p&gt;</comment>
                            <comment id="309931" author="pronoob135" created="Fri, 3 Jun 2016 22:05:58 +0200"  >&lt;p&gt;Torch keys also use quasi-connectivity, forgot to mention them.&lt;/p&gt;</comment>
                            <comment id="309929" author="agentcpu0" created="Fri, 3 Jun 2016 22:02:17 +0200"  >&lt;p&gt;You didn&apos;t mention the Torch Keys. Is there a problem there?&lt;/p&gt;</comment>
                            <comment id="309869" author="pronoob135" created="Fri, 3 Jun 2016 20:32:33 +0200"  >&lt;p&gt;Pistons have different timeings in PE, that&apos;s why dpe&apos;s are broken, the monostable was based off quasi-connectivity(witch is not in PE) and the t-flip flop used 0 ticks, pistons cannot be 0 ticked in PE.&lt;/p&gt;</comment>
                            <comment id="309793" author="agentcpu0" created="Fri, 3 Jun 2016 17:14:35 +0200"  >&lt;p&gt;I&apos;ll try to explain what each circuit is, but I still recommend searching YouTube, as there&apos;s more than 1 way to build each type of each circuit. I&apos;ll provide links to tutorials of each circuit type.&lt;br/&gt;
A Redstone Torch Key lets you place either a redstone torch or redstone dust on a block to activate a circuit. When activated, the key will be destroyed by means of a piston, while also activating a separate circuit. &lt;a href=&quot;https://youtu.be/zhg67kberPw&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/zhg67kberPw&lt;/a&gt;&lt;br/&gt;
Double Piston Extenders are pretty much self explanitory. It fires 2 sticky pistons to push a block 2 blocks forward when powered. When turned off, it retracts both pistons as well as the attached block. The issue here is that the redstone fires too quickly to properly retract both pistons and the block back to their original positions. &lt;a href=&quot;https://youtu.be/R30ACyF8NHM&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/R30ACyF8NHM&lt;/a&gt;&lt;br/&gt;
A T-Flip Flop turns almost any circuit into a lever. In a piston-powered T-Flip Flop, a sticky piston is given a 1 tick pulse. It pushes and retracts so fast that it does not pull the block back with it. But when powered again, it does pull said block back. A piston T-Flip Flop is commonly used alongside a Torch Key, as that circuit actually does give off a 1 tick pulse. &lt;a href=&quot;https://youtu.be/9nEWPCSRxOI&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/9nEWPCSRxOI&lt;/a&gt;&lt;br/&gt;
The last YouTube link features 2 circuit types: the Monostable Circuit, and the T-Flip Flop. The Monostable is covered in the first half of the video, and does work as it should. But the piston T-Flip Flop covered is only 1 of many versions of that particular circuit.&lt;/p&gt;</comment>
                            <comment id="309768" author="luisrobles" created="Fri, 3 Jun 2016 16:30:31 +0200"  >&lt;p&gt;Please provide the full description of this issue. Like steps to reproduce this bug, thanks you.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="142241">MCPE-14664</issuekey>
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