ALU 2b
About the ALU 2b PCB
ALU 2b is an open source PCB design by ChetanMandloi, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 111.6 × 74.9 mm, with 79 components from 11 distinct parts.
Other key parts include the 74LS08, 74LS83, 74LS244 and LM741. By type, the board carries 35 diodes, 27 resistors, 10 ICs, 6 connectors and 1 battery holder.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
KiCad design files to help you make a 4bit ALU and an interface shield with 2 sided copper clad boards
KiCad files to allow you to make a 4 bit ALU using Double sided copper clad board. Pictures and instructions incoming soon.
Main components on the ALU 2b
ALU 2b bill of materials (BOM)
79 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74LS08 | DIP-14_W7.62mm_Socket_LongPads | U1, U2, U3 |
| 3 | 74LS83 | DIP-16_W7.62mm_Socket_LongPads | U4, U5, U6 |
| 1 | 74LS244 | DIP-20_W7.62mm_Socket_LongPads | U7 |
| 3 | LM741 | DIP-8_W7.62mm_Socket_LongPads | U8, U9, U10 |
| 3 | CONN_01X04 | Pin_Header_Straight_1x04_Pitch2.54mm | J1, J2, J6 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03_Pitch2.54mm | J3 |
| 1 | CONN_01X08 | Pin_Header_Straight_1x08_Pitch2.54mm | J4 |
| 1 | CONN_01X01 | Pin_Header_Straight_1x01_Pitch2.54mm | J5 |
| 1 | Battery_Cell | Pin_Header_Straight_1x02_Pitch2.54mm | BT1 |
| 35 | LED | LED_1206 | D1, D2, D3, D4, D5, D6, D7, D8 +27 |
| 27 | R | R_1206 | R1, R2, R3, R4, R5, R6, R7, R8 +19 |
ALU 2b design files
The KiCad project lives in the ChetanMandloi/4-bit-ALU repository on GitHub; these links point at the commit this page was built from.
ALU 2b: common questions
How big is the ALU 2b PCB?
The ALU 2b measures 111.6 × 74.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ALU 2b?
79 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the ALU 2b design files?
From the ChetanMandloi/4-bit-ALU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ALU 2b design in my own project?
Yes, under the terms of its GPL-3.0 license, which ChetanMandloi chose for the repository.
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