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Carry Out Selector

DragonMinded·minidragon·schematics/PCBs/Carry Out Selector/Carry Out Selector.kicad_pcb

Carry Out Selector PCB layout, top view — open source board by DragonMinded
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About the Carry Out Selector PCB

Carry Out Selector is an open source PCB design by DragonMinded, published on GitHub. It is a 2-layer board measuring 61 × 83.8 mm, with 76 components from 23 distinct parts.

By type, the board carries 28 resistors, 26 transistors, 20 connectors, 1 diode and 1 capacitor.

From the project

Hardware and software files for the MiniDragon CPU.

Schematics, hardware simulator and software files for the MiniDragon CPU. This is a from-scratch CPU that I designed and am implementing using transistors, capacitors, resistors and diodes. The goal is to make an 8-bit CPU that could be used for general-purpose computing. There are a lot of toy instruction sets floating around on the web. I chose instead to design my own, loosely based off of the PDP and 6502. It is a single accumulator design with a pair of 16-bit stack pointers and a pair of temporary 8-bit registers. Instructions are 8 bits, operands are 8 bits from memory, temporary…

Carry Out Selector bill of materials (BOM)

76 components, 23 distinct parts.

QtyPartRefs
26
2N2222
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +18
3
POWER
J1, J2, J3
1
D1
J4
1
EN1
J5
1
D2
J6
1
EN2
J7
1
D3
J8
1
EN3
J9
1
D4
J10
1
EN4
J11
1
D5
J12
1
EN5
J13
1
D6
J14
1
EN6
J15
1
D7
J16
1
EN7
J17
1
D8
J18
1
EN8
J19
1
CARRY
J20
1
LED
D1
Show 3 more
QtyPartRefs
1
0.1uF
C1
17
10K
R1, R2, R4, R6, R7, R9, R10, R12 +9
11
1K
R3, R5, R8, R11, R14, R17, R20, R23 +3

Carry Out Selector design files

The KiCad project lives in the DragonMinded/minidragon repository on GitHub; these links point at the commit this page was built from.

Carry Out Selector: common questions

How big is the Carry Out Selector PCB?

The Carry Out Selector measures 61 × 83.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Carry Out Selector?

76 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Carry Out Selector design files?

From the DragonMinded/minidragon repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Carry Out Selector design in my own project?

The repository has no license, so all rights stay with DragonMinded. Use it as a reference, and ask the author before reusing the design.

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