Busmaster
About the Busmaster PCB
Busmaster is an open source PCB design by Noah1989, published on GitHub under the MIT license. It is a 2-layer board measuring 160 × 100 mm, with 33 components from 13 distinct parts.
Other key parts include the 74HC688, 74HC138, 74HC00, 74HC573 and 74HC244. By type, the board carries 13 capacitors, 12 ICs, 4 resistors, 2 connectors, 1 switch and 1 diode.
From the project
An 8-bit microcomputer for the 21st century
- ... independent: - contains all the tools required to design another version of itself - does not require high soldering skills, uses through-hole parts only - uses only "evergreen" parts that have been in production for decades and are still made today
- ... aproachable: - simple through reduction - NO hidden complexity behind brittle abstractions - open source and self-documenting
Main components on the Busmaster
Busmaster bill of materials (BOM)
33 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC688 | DIP-20_W7.62mm_Socket_LongPads | U1 |
| 1 | 74HC138 | DIP-16_W7.62mm_Socket_LongPads | U2 |
| 1 | 74HC00 | DIP-14_W7.62mm_Socket_LongPads | U3 |
| 1 | 74HC573 | DIP-20_W7.62mm_Socket_LongPads | U4 |
| 3 | 74HC244 | DIP-20_W7.62mm_Socket_LongPads | U5, U10, U11 |
| 4 | 74HC161 | DIP-16_W7.62mm_Socket_LongPads | U6, U7, U8, U9 |
| 1 | 74HC245 | DIP-20_W7.62mm_Socket_LongPads | U12 |
| 2 | C96ABC | DIN41612_C_3x32_Male_Horizontal_THT | J1, J2 |
| 1 | SW_Coded_SH-7050 | Nidec_Copal_SH-7010C | SW1 |
| 1 | BAT46 | D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 12 | 100nF | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C2, C3, C4, C5, C6, C7, C8 +4 |
| 1 | CP | CP_Radial_D5.0mm_P2.00mm | C13 |
| 4 | R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4 |
Busmaster design files
The KiCad project lives in the Noah1989/loopmicro repository on GitHub; these links point at the commit this page was built from.
Busmaster: common questions
How big is the Busmaster PCB?
The Busmaster measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Busmaster?
33 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the Busmaster design files?
From the Noah1989/loopmicro repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Busmaster design in my own project?
Yes, under the terms of its MIT license, which Noah1989 chose for the repository.
