HardLabs

CFT DFP Board

alexiosc·cft·kicad/cft/cft-dfp/cft-dfp.kicad_pcb

CFT DFP Board layout, top view — open source AVR/Arduino board by alexiosc

About the CFT DFP Board

CFT DFP Board is an open source AVR/Arduino 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 186 components from 35 distinct parts.

Its main chip is the Arduino-Mega-2560, from the AVR/Arduino family. Other key parts include the 74AC573, 74HC590, 74HC245, 74HC541 and 74HC138. By type, the board carries 60 capacitors, 58 resistors, 47 ICs, 10 diodes, 5 connectors and 4 switches.

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.

CFT DFP Board, from the project README
From the project README

Main components on the CFT DFP Board

74AC57374HC59074HC24574HC54174HC13874HC540ATF16V8B74HC11274LVC1G0774HC7474HC57474HC08

CFT DFP Board bill of materials (BOM)

186 components, 35 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
74AC573
U3
1
74HC590
U4
1
74HC245
U5
5
74HC541
U28, U29, U307, U308, U309
1
74HC138
U34
1
74HC540
U38
10
ATF16V8B
U40, U201, U301, U302, U303, U304, U1901, U1902 +2
1
74HC112
U41
1
74LVC1G07
U43
1
74HC74
U202
22
74HC574
U305, U306, U501, U502, U601, U602, U701, U702 +14
2
74HC08
U401, U402
1
7.3728 MHz?
X1
1
Conn_01x06
J1
1
Conn_02x15_Odd_Even
J2
1
Arduino-Mega-2560
J8
2
CFT-2021-Processor-Bus
P1, P2
1
Conn_02x03_Odd_Even
JP3
1
momentary_switch
SW1
3
SW_DIP_x08
SW2, SW3, SW4
Show 15 more
QtyPartRefs
5
LED_ALT
D1, D2, D3, D4, D5
5
PESD5V2S2UT
D17, D18, D19, D20, D21
48
100nF
C3, C4, C5, C11, C28, C29, C34, C38 +40
1
1µF
C12
10
47µF
C17, C18, C19, C20, C21, C101, C104, C106 +2
1
100µF, 16V
C22
13
1kΩ
R1, R2, R5, R6, R7, R8, R9, R11 +5
9
30Ω
R3, R36, R37, R38, R39, R40, R41, R201 +1
10
10kΩ
R4, R10, R12, R13, R16, R203, R204, R205 +2
6
1kΩ?
R14, R901, R902, R903, R904, R905
1
30Ω
RN4
2
10kΩ
RN7, RN1702
3
4.7kΩ
RN15, RN16, RN17
2
10kΩ
RN401, RN402
12
1kΩ
RN501, RN601, RN701, RN801, RN904, RN1001, RN1101, RN1201 +4

CFT DFP Board 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 DFP Board: common questions

What microcontroller does the CFT DFP Board use?

The CFT DFP Board is built around the Arduino-Mega-2560, from the AVR/Arduino family.

How big is the CFT DFP Board?

The CFT DFP Board measures 233.4 × 280 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CFT DFP Board?

186 components, from 35 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 DFP Board 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 DFP Board design in my own project?

Yes, under the terms of its GPL-3.0 license, which alexiosc chose for the repository.

Can I test firmware for the CFT DFP Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

More boards in cft

Similar boards