RJ45 jumper box » History » Version 3
laforge, 02/14/2023 05:57 PM
| 1 | 1 | laforge | h1. RJ45 jumper box |
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| 3 | This is a small circuit board that allows you to prototype arbitrary RJ45 cables / pin-outs. Once the pin-out is confirmed, you can go ahead and crimp a cable with matching pin-out, having verified that it is correct. |
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| 5 | @laforge finds this very useful, particularly in the context of the many differen RS232 on RJ45 pin-outs in use by various equipment out there. |
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| 7 | 3 | laforge | h2. Hardware v1 |
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| 9 | This is a single-layer PCB design. In order to make the PCB routing easy, the RJ45 connectors are on opposite sides of the PCB. |
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| 11 | 1 | laforge | !{width:50%}rj45_jumper_box-top.jpg! |
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| 13 | !{width:50%}rj45_jumper_box-bot.jpg! |
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| 15 | !{width:50%}rj45_jumper_box-with_cables.jpg! |
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| 16 | 3 | laforge | |
| 17 | h2. Hardware v2 |
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| 19 | In the hardware version _v2_, the PCB design was switched to a two-layer design, and both RJ45 connectors are now located on the top side of the PCB. This significantly increases the usability. |
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| 21 | !{width:50%}rj45-pcba.jpg! |
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| 22 | 1 | laforge | |
| 23 | h2. Design files |
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| 25 | 2 | laforge | The PCB design files are available at https://gitea.osmocom.org/electronics/osmo-small-hardware/src/branch/master/rj45-jumper-box |
