IEEE Std. 1284 HAT+
About the IEEE Std. 1284 HAT+
IEEE Std. 1284 HAT+ is an open source PCB design by worlickwerx, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 65 × 56.5 mm, with 16 components from 13 distinct parts.
Other key parts include the CAT24C32WI-GT3 and SN74LVC161284DL. By type, the board carries 5 capacitors, 4 connectors, 4 resistors, 2 ICs and 1 jumper.
It belongs with the dev boards & breakouts and retro computing designs in this gallery.
From the project
retro parallel port for raspberry pi
v4 mainly corrects some minor flaws in the v3 design. Bypass capacitors are added, a few traces are rerouted to avoid passing under resistors, and the footprints for the EEPROM resistors are changed from 0603 to 0805. Also, a few CAD-related inconsistencies were fixed, like unclosed board outline and footprints not being consistent between the schematic and board layout files.
Main components on the IEEE Std. 1284 HAT+
IEEE Std. 1284 HAT+ bill of materials (BOM)
16 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CAT24C32WI-GT3 CAT24C256 ON Semiconductor | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | SN74LVC161284DL SN74LVC161284DLR Texas Instruments | SSOP-48_7.5x15.9mm_P0.635mm | U2 |
| 1 | M20-9990246 GPIO Harwin Inc. | Harwin_M20-7812045_2x20_P2.54mm_Vertical | J1 |
| 1 | PPPC202LFBN-RC Qwiic Sullins Connector Solutions | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 1 | 68021-226HLF DB25 header Amphenol ICC (FCI) | DB25_header_2x13_P2.54mm_horizontal | J3 |
| 1 | V select | PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Left | J4 |
| 1 | ID_WP | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 2 | C0805C104Z5VACTU 100n KEMET | C_0603_1608Metric | C1, C2 |
| 3 | 100n | C_0603_1608Metric | C3, C4, C5 |
| 1 | 3.9k | R_0603_1608Metric | R1 |
| 1 | ERJ-6ENF1002V 3.9k Panasonic Electronic Components | R_0603_1608Metric | R2 |
| 1 | ERJ-6ENF3901V 1.4k Panasonic Electronic Components | R_0603_1608Metric | R3 |
| 1 | ERJ-6ENF3901V 1k Panasonic Electronic Components | R_0603_1608Metric | R4 |
IEEE Std. 1284 HAT+ design files
The KiCad project lives in the worlickwerx/pi-parport repository on GitHub; these links point at the commit this page was built from.
- Layouthardware/v5/hat.kicad_pcb
- Schematichardware/v5/hat.kicad_sch
- BOMhardware/v4/BOM.md
IEEE Std. 1284 HAT+: common questions
How big is the IEEE Std. 1284 HAT+?
The IEEE Std. 1284 HAT+ measures 65 × 56.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IEEE Std. 1284 HAT+?
16 components, from 13 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 IEEE Std. 1284 HAT+ design files?
From the worlickwerx/pi-parport repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the IEEE Std. 1284 HAT+ design in my own project?
Yes, under the terms of its GPL-2.0 license, which worlickwerx chose for the repository.
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