CFT Board 1
About the CFT Board 1
CFT Board 1 is an open source PCB design by alexiosc, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 233.4 × 280 mm, with 222 components from 34 distinct parts.
Other key parts include the 74HC541, ATF16V8B, 74HC574, 29W010 and 74HC573. By type, the board carries 85 capacitors, 69 ICs, 43 resistors, 21 diodes, 2 connectors and 1 crystal.
It belongs with the usb & debug tools designs in this gallery.
From the project
The CFT homebrew minicomputer
The CFT is a home-designed, home-built mini-computer made from scratch.
I've designed and built the instruction set, data path, processor, computer, software stack, cross-assembler, emulator, software toolchain and even some of the tools needed to do all this. You can call this a ‘fantasy mini’.
This project has been going since approximately 2001, in my Copious Free Time.
Main components on the CFT Board 1
CFT Board 1 bill of materials (BOM)
222 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 12 | 74HC541 | DIP-20_W7.62mm_Socket | U120, U402, U405, U502, U506, U1202, U1203, U1204 +4 |
| 6 | ATF16V8B | DIP-20_W7.62mm_Socket | U201, U202, U203, U601, U801, U1210 |
| 6 | 74HC574 | DIP-20_W7.62mm_Socket | U301, U302, U401, U404, U901, U902 |
| 3 | 29W010 | PLCC32 | U503, U507, U510 |
| 1 | 74HC573 | DIP-20_W7.62mm_Socket | U505 |
| 9 | 74HC74 | DIP-14_W7.62mm_Socket | U508, U1301, U1401, U1501, U1601, U1701, U1801, U1901 +1 |
| 4 | 74AC74 | DIP-14_W7.62mm_Socket | U602, U802, U803, U804 |
| 1 | 74AC191 | DIP-16_W7.62mm_Socket | U603 |
| 4 | 74AC541 | DIP-20_W7.62mm_Socket | U604, U605, U606, U607 |
| 1 | 74LVC1G32 | SOT-23-5_HandSoldering | U608 |
| 1 | 74HC04 | DIP-14_W7.62mm_Socket | U701 |
| 1 | 74AC86 | DIP-14_W7.62mm_Socket | U702 |
| 1 | 74AC14 | DIP-14_W7.62mm_Socket | U703 |
| 8 | 74HC193 | DIP-16_W7.62mm_Socket | U1001, U1004, U1007, U1009, U1101, U1103, U1106, U1108 |
| 8 | 74HCT541 | DIP-20_W7.62mm_Socket | U1002, U1005, U1006, U1008, U1102, U1104, U1105, U1107 |
| 2 | 74HC688 | DIP-20_W7.62mm_Socket | U1003, U1010 |
| 1 | 74HC259 | DIP-16_W7.62mm_Socket | U1201 |
| 1 | CXO_DIP8 | Oscillator_DIP-8-socket | X701 |
| 1 | CFT-2021-Processor-Bus | DIN41612_B_3x32_Horizontal | P1 |
| 1 | CFT-2021-Peripheral-Bus | DIN41612_B_3x32_Horizontal | P2 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Jumper_3_Bridged12 | PinHeader_1x03_P2.54mm_Horizontal | JP1201 |
| 13 | LED_ALT | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D101, D102, D103, D104, D105, D1201, D1202, D1203 +5 |
| 8 | CUS520 | SOD-323 | D1301, D1401, D1501, D1601, D1701, D1801, D1901, D2001 |
| 14 | 47µF | CP_Radial_D6.3mm_P2.50mm | C101, C102, C103, C104, C105, C106, C107, C108 +6 |
| 62 | 100nF | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C120, C201, C202, C203, C301, C302, C401, C402 +54 |
| 1 | 120pF | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C704 |
| 8 | 100n | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1301, C1401, C1501, C1601, C1701, C1801, C1901, C2001 |
| 13 | 1kΩ | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R101, R102, R103, R104, R105, R1201, R1202, R1203 +5 |
| 6 | 0Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R601, R701, R702, R703, R704, R707 |
| 6 | 30Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R602, R603, R706, R801, R802, R1001 |
| 9 | 100Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R705, R1301, R1401, R1501, R1601, R1701, R1801, R1901 +1 |
| 6 | 10kΩ | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1002, R1003, R1101, R1102, R1211, R1212 |
| 2 | 4.7kΩ | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1209, R1210 |
| 1 | 10kΩ | R_Array_SIP9 | RN801 |
CFT Board 1 design files
The KiCad project lives in the alexiosc/cft repository on GitHub; these links point at the commit this page was built from.
CFT Board 1: common questions
How big is the CFT Board 1?
The CFT Board 1 measures 233.4 × 280 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CFT Board 1?
222 components, from 34 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the CFT Board 1 design files?
From the alexiosc/cft repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the CFT Board 1 design in my own project?
Yes, under the terms of its GPL-3.0 license, which alexiosc chose for the repository.
More boards in cft
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