2 layers
CompaqportableIII
raymondh2/CompaqPortableIII
Current PCB Memory Expansion board layout is untested. The backplane for the expansion cards is tested and working.
123 parts17
2 layers124 × 79 mm
Pico profile
BwanaFr/pico-profile14An Apple Profile emulator based on Raspberry Pi Pico MCU
- Size
- 124 × 79 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 66
- Pads
- 303
- Tracks, vias
- 935, 119
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 17 Aug 2021
- Updated
- 17 Dec 2021
Overview
Pico profile is an open-source printed circuit board by BwanaFr, from the BwanaFr/pico-profile repository on GitHub. It is a 2-layer board of 124 × 79 mm with 42 parts on 66 nets, routed with 935 tracks and 119 vias.
It is built around the 74LVC1G07, 74LVC244 and 74LVC2G240DP, with the 74LVC1G04Z, 74LS280FP-E and MBR1020VL among its other parts. Its parts include 19 resistors, 9 ICs, 8 capacitors, 5 connectors and 1 diode. It belongs with the RP2040 boards of this library.
Main components
6
74LVC1G07
SOT-353-40℃~+105℃ 1 1 1.65V~5.5V 1.6ns@5.5V,50pF 24mA 4uA 74LVC Open-drain Power-off isolation、Level shifting Unidirectional SOT-353 Buffers, Drivers, Receivers, Transceivers ROHSWuxi I-core ElecBuffers, Drivers, Receivers, Transceivers
74LVC244
TSSOP-20Buffers, Drivers, Receivers, TransceiversWuxi I-core Elec
74LVC2G240DP
TSSOP-8-40℃~+125℃ 1 1.65V~5.5V 2 2ns@4.5V,50pF 32mA 32mA 4uA 74LVC Power-off isolation、Output enable、Level shifting Schmitt trigger Tri-State Unidirectional TSSOP-8 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
74LVC1G04Z
SOT-553-40℃~+125℃ 1 1 1.65V~5.5V 1.7V~2V 200uA 32mA 32mA 5ns@5V,50pF 700mV~800mV 74LVC SOT-553 Inverters ROHSDiodes IncorporatedInverters74LS280FP-E
-0.4V、0.5V 0.8V 2.7V 2V Odd parity generation、Simultaneous odd/even parity output、Even parity generation - Parity Generators and Checkers ROHSRenesas ElectronicsParity Generators And Checkers
MBR1020VL
SOD-123F-55℃~+125℃ 1 Independent 1A 20V 340mV@1A 45A 600uA@20V SOD-123F Schottky Diodes ROHSonsemiSchottky Diodes
README
README.mdpico-profile
This project goal is to emulate a Profile/Widget hard disk. My ultimate goal is to be able to use this circuit with my Apple Lisa computer.
It's a work in progress and not yet ready for production.
Demo
A short video showing the project in action is available on Youtube
Licensing
The final license of this project is not yet determined. No commercial usage of this project can be made.
TODO:
- Improve how Apple resets the MCU
- Add buttons to choose the disk image to use
Add more silkscreen information (power supply polarity...)- Design a 3D printed enclosure
Fix the 74L280 footprint on PCB- Make a through hole PCB version
- Test it with an Apple III
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100 | Resistor_SMD:R_0603_1608Metric | R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18 |
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C6, C7, C8 |
| 4 | 4.7k | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R5 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5 |
| 3 | 74LVC1G04 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U5, U6, U9 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R19 |
| 1 | 74LS244 | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U2 |
| 1 | 74LS280 | Package_SO:SO-16_5.3x10.2mm_P1.27mm | U1 |
| 1 | 74LVC1G07 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U8 |
| 1 | 74LVC244 | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U3 |
| 1 | 74LVC2G240 | Package_SO:TSSOP-8_3x3mm_P0.65mm | U4 |
| 1 | DB25_Female | Connector_Dsub:DSUB-25_Female_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J2 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | MBR1020VL | Diode_SMD:D_SOD-123F | D1 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_104031-0811 | J3 |
| 1 | Parallel | Connector_IDC:IDC-Header_2x13_P2.54mm_Vertical | J1 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U7 |
| 1 | Screw_Terminal_01x02 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_2-G-5,08_1x02_P5.08mm_Horizontal | J5 |
Similar boards
- 4 layers254 × 74 mm
- 2 layers228.1 × 172.7 mm
- 2 layers76.1 × 77.3 mm
VeriTAS
bigbass1997/VeriTAS
TAS replay device and dump automation tooling, for use in console verifications
114 parts9 - 4 layers51 × 31.5 mm
- 6 layers70 × 40.5 mm
FMUv246-imported
yagamy4680/drone-study
AUAV-OpenSource/FMUv4-PixRacer is the open hardware design of PixHawk FMUv4. It uses STM32F427 and MPU6000. (github)
290 parts - 6 layers70 × 40.5 mm
PX4FMUv2.4
lachlanA/eagle-to-kicad
Eagle SCH/LIB to KiCad SCH/LIB ULP conversion script
354 parts429GPL-2.0 - 2 layers280 × 164.6 mm
Questions
How big is the Pico profile PCB?
It measures 124 × 79 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pico profile use?
42 parts, built around the 74LVC1G07, 74LVC244, 74LVC2G240DP and 74LVC1G04Z. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pico profile KiCad files?
From the BwanaFr/pico-profile repository on GitHub, at the commit this page was made from: the board is kicad/Pico-profile.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pico profile design in my own project?
Its repository states no licence, so its author keeps all rights: ask BwanaFr before reusing the design.