Minecraft Username: DrEnder
Have you read the Read Before Posting post?: Yes
Your favorite thing about redstone: I enjoy the challenge redstone gives me, as well as the feeling of accomplishment that I get when I finally solve something. I thoroughly enjoy logic, and find it very fascinating that such simple components can be made into complex machines.
A build you have made which demonstrates redstone knowledge (This is your trial build): 8 Bit Binary to BDC Converter
Explain what your build does in detail: This build recursively uses the double dabble algorithm to convert an 8 bit binary number into binary coded decimal. 3 4-bit CCA’s are stacked on top of each other to add 3 to each nibble. Each nibble is checked whether it is 5 or above. If a nibble is 5 or larger, the multiplexer at the output of the CCA will shift and save the nibble incremented by 3. If the nibble is 4 or lower, the multiplexer will shift and save the nibble without increment. This algorithm executes 8 times since there is 8 bits to the input binary number.
Images / videos of the build:
What is the name of the warp for your build on ORE?:
8bit_Double_Dabble
Provide your results after completing the ORE Binary Quiz:
Do you agree with the rules?: Yes
Why did you post a screenshot of it instead of pressing the provided copy button right there? I attempted to verify by typing it in manually, but it was not valid. I can’t be sure whether this is human error or an invalid certificate, but I did my best to double check. Please provide the full certificate using the copy button.
Binary Quiz completion certificate:
Completed by DrEnder_ in 4m2.971s on 2/3/2026, 09:15 UTC.
96.15% accuracy with 1/26 answers given incorrectly.
5a276290-1dce-4c99-b691-597de0f04364-4472456e6465725f
4x0v2l1g282x130o5x1v0w126i405z6d1n5l324jml6dqm94ml6dvtqb
Alright, the Binary Quiz checks out, just one more thing and it should be all good
Binary to BCD as a trial build is not sufficiently advanced. The bar for trial builds is at or above the level of a 4 Bit ALU. Please respond with a new build if/when you decide on one.
My bad for not including that in the previous reply.
Here is an 8 bit ALU I’ve finished making. Uses a carry cancel adder, which works like a carry skip adder, only that the propogate signal is replaced by a carry cancel signal. When both inputs of a pair of bits are off, a carry cancel signal is produced, which prevents a carry from propagating through to the next segment. This ALU can perform addition, subtraction, and the bitwise functions XOR, XNOR, OR, NOR, AND, and NAND. To perform subtraction, the B input is inverted, and the carry in signal is turned on. This adds the negative 2’s complement to input A, which is equivalent to performing subtraction. By flooding the carry cancel line, all vertical segments are isolated, and thus bitwise logic can now be performed. XOR is computed when only the flood cancel line is on. If the flood cancel line is on and the last XOR gate is on, then the XOR output is inverted, resulting in XNOR being output. By bypassing the first XOR gate, AND, OR, NAND, and NOR can all be computed by inverting the inputs and outputs in different combinations as per De’Morgans theorem. Additionally, a zero flag and a overflow flag can be found at the top of the ALU.
To find this build, go the the same plot as my Binary to BCD machine.
Looks good!
This application has been accepted!
Please review the FAQ below to learn more about the remainder of the process of getting Builder rank.
FAQ
Q: What is my next step?
A: Join the ORE Minecraft server and request a trial with any available trialers (Engineers, Moderators, and Admins).
The server IP is mc.openredstone.org and the current version is 1.21.8 on Java Edition.
Q: Do I need to trial right away?
A: Nope! You are free to request a trial at any time so long as your application is accepted (which yours is).
Ideally you want to avoid taking too long, so we strongly recommend being sure you can pass before requesting a trial.
Q: How long does a trial last?
A: This can vary somewhat across different trialers, but generally somewhere around half an hour or less. It will often take longer if you aren’t as prepared, so we recommend reviewing ahead of time, especially with help from another member.
Q: What do I need to know for the trial?
A: This can also vary somewhat across different trialers, but here are some of the most important topics:
- Binary and Binary Arithmetic (Addition/Subtraction)
- Logic Gates and Bitwise Logic
- Redstone Adders and ALUs
- Two’s Complement (Signed Numbers)
A great way to make sure you know what to expect is to ask the specific trialer what you should learn ahead of time.
Q: How often can I retry after failing?
A: There are 2 limitations:
- Trials can be done 24 hours after a failed one
- Only 2 trials can be done every 7 days
Q: What are the benefits of Builder?
A: There are 3 main benefits:
- Permissions to use Worldedit commands
- A plot on the Build server (4 times as large as School server plots)
- Access to the Survival world
Aside from that, there are also some minor benefits such as:
- Running and voting in Staff elections
- Joining the Seasonal server when it’s up (an occasional “Survival with a twist” type server)
- Option to progress to Engineer (barring additional requirements are met)
- Interact with other Build plots (assuming permission from the plot owner)
