EasyATnoX
About the EasyATnoX PCB
EasyATnoX is an open source PCB design by chris-kwng, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 99.5 × 99.5 mm, with 24 components from 17 distinct parts.
Other key parts include the 74HC74, 74HC14, L7905 and 74HC73. By type, the board carries 6 capacitors, 6 resistors, 4 ICs, 4 connectors, 2 diodes and 1 crystal.
From the project
Modified version of hkzlab's ATnoX
The easyATnoX is my modified version of of hkzlab's ATnoX, which was born out of the need to have a small adapter to fit AT/XT motherboards into modern cases to power them with ATX power supplies and turn them on with a push button (the standard power button found in computer enclosures of the last 20+ years).
It is a cost-effective alternative to the ATX2AT Smart Converter, which has a great range of functions, but functions that are not always needed, especially if it is simply a matter of operating an old mainboard in the end.
Main components on the EasyATnoX
EasyATnoX bill of materials (BOM)
24 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC74 | DIP-14_W7.62mm_LongPads | U1 |
| 1 | 74HC14 | DIP-14_W7.62mm_LongPads | U2 |
| 1 | L7905 | TO-263-3_TabPin2 | U3 |
| 1 | 74HC73 | DIP-14_W7.62mm_LongPads | U5 |
| 1 | 3.2768 | Crystal_HC52-6mm_Horizontal_1EP_style1 | Y1 |
| 1 | Power Switch | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Power LED | PinHeader_1x02_P2.54mm_Vertical | J4 |
| 2 | TERMINALBLOCK_4UCON_1X06_P3.50MM_HORIZONTAL TerminalBlock_4Ucon_1x06_P3.50mm_Horizontal | TerminalBlock_4Ucon_1x06_P3.50mm_Horizontal | P8, P9 |
| 1 | Power | SW_PUSH_6mm_H4.3mm | SW1 |
| 2 | LL4148 | D_A-405_P10.16mm_Horizontal | D1, D2 |
| 4 | 100NF 100nF | C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C3, C4, C5, C6 |
| 2 | 6.8PF 6.8pF | C_Axial_L3.8mm_D2.6mm_P7.50mm_Horizontal | C7, C8 |
| 2 | 10K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 1 | 470 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 1 | 1K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9 |
| 1 | 100K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R10 |
| 1 | 10M | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R11 |
EasyATnoX design files
The KiCad project lives in the chris-kwng/easyATnoX repository on GitHub; these links point at the commit this page was built from.
EasyATnoX: common questions
How big is the EasyATnoX PCB?
The EasyATnoX measures 99.5 × 99.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the EasyATnoX?
24 components, from 17 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 EasyATnoX design files?
From the chris-kwng/easyATnoX 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 EasyATnoX design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which chris-kwng chose for the repository.