Cft ctl
About the Cft ctl PCB
Cft ctl is an open source PCB design by alexiosc, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 131.9 × 164.6 mm, with 195 components from 37 distinct parts.
Other key parts include the 74HC251, 74AC08, 74AC32, 74LVC1G86 and 74LVC1G0832. By type, the board carries 66 capacitors, 63 resistors, 56 ICs, 7 diodes, 1 crystal and 1 connector.
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 ctl
Cft ctl bill of materials (BOM)
195 components, 37 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74HC251 | DIP-16_W7.62mm_Socket | U1, U5, U43 |
| 1 | 74AC08 | DIP-12_W7.62mm_Socket | U2 |
| 1 | 74AC32 | DIP-12_W7.62mm_Socket | U3 |
| 1 | 74LVC1G86 | SOT-23-5_HandSoldering | U4 |
| 1 | 74LVC1G0832 | SOT-23-6_Handsoldering | U6 |
| 1 | 74AC157 | DIP-16_W7.62mm_Socket | U7 |
| 5 | 74LVC1G74 | TSSOP-8_3x3mm_P0.65mm | U8, U13, U22, U29, U41 |
| 3 | 74LVC1G32 | SOT-23-5_HandSoldering | U9, U39, U51 |
| 2 | 74HC139 | DIP-16_W7.62mm_Socket | U10, U36 |
| 10 | 74HC541 | DIP-20_W7.62mm_Socket | U11, U14, U16, U17, U18, U19, U21, U27 +2 |
| 6 | 74HC574 | DIP-20_W7.62mm_Socket | U12, U20, U33, U58, U59, U60 |
| 3 | 74HC138 | DIP-16_W7.62mm_Socket | U15, U28, U30 |
| 2 | 74LVC1G11 | SOT-23-6_Handsoldering | U23, U24 |
| 2 | 74LVC1G08 | SOT-23-5_HandSoldering | U25, U42 |
| 1 | 74LVC1G00 | SOT-23-5_HandSoldering | U26 |
| 1 | 74HC590 | DIP-16_W7.62mm_Socket | U34 |
| 1 | 74LVC1G17 | SOT-23-5_HandSoldering | U35 |
| 1 | 74AC191 | DIP-16_W7.62mm_Socket | U37 |
| 1 | 74LVC2G157 | TSSOP-8_3x3mm_P0.65mm | U38 |
| 1 | 74LVC1G04 | SOT-23-5_HandSoldering | U40 |
Show 17 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74AC161 | DIP-16_W7.62mm_Socket | U44 |
| 1 | 74HC85 | DIP-16_W7.62mm_Socket | U45 |
| 3 | 74LVC1G373 | SOT-23-6_Handsoldering | U46, U50, U56 |
| 1 | SN74ACT1071 | DIP-12_W7.62mm_Socket | U47 |
| 3 | AT27C020 | PLCC32 | U52, U53, U54 |
| 1 | 16 MHz | Crystal_SMD_7050-4Pin_7.0x5.0mm | X1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | tactile_switch | SW_Tactile_SPST_Angled_PTS645Vx39-2LFS | SW1 |
| 7 | CUS520 | SOD-323 | D2, D3, D4, D5, D6, D7, D8 |
| 57 | 100nF | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +49 |
| 4 | 10µF | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C24, C49, C51, C53 |
| 1 | 47µF | C_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C28 |
| 4 | 47µF | CP_Radial_D6.3mm_P2.50mm | C56, C57, C59, C60 |
| 30 | 4.7kΩ | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2, R3, R4, R7, R9, R10, R11 +22 |
| 24 | 0Ω/30Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5, R6, R8, R30, R31, R32, R33, R34 +16 |
| 8 | 30Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R14, R18, R19, R20, R21, R22, R29, R53 |
| 1 | 0Ω | R_SMD_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R56 |
Cft ctl 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 ctl: common questions
How big is the Cft ctl PCB?
The Cft ctl measures 131.9 × 164.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Cft ctl?
195 components, from 37 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 ctl 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 ctl 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
CFT Processor Board 0
233.4 × 280 mm274 parts2LGPL-3.06
CFT Board 1
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Cft ctl dip
131.9 × 164.6 mm195 parts4LGPL-3.06
AVR/ArduinoCFT DFP Board
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AVR/ArduinoDebugging Front Panel
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Cft front panel-20190912-all modules
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CFT MEM Board
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CFT 8 Slot Backplane
131.9 × 165.1 mm47 parts4LGPL-3.06
Cft backplane-20191114-r1922
131.9 × 165.1 mm47 parts4LGPL-3.06
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