RJ45 jumper box » History » Revision 4
Revision 3 (laforge, 02/14/2023 05:57 PM) → Revision 4/5 (laforge, 02/14/2023 05:59 PM)
{{>toc} h1. RJ45 jumper box 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. @laforge finds this very useful, particularly in the context of the many different differen RS232 on RJ45 pin-outs in use by various equipment out there. h2. Hardware v1 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. !{width:50%}rj45_jumper_box-top.jpg! !{width:50%}rj45_jumper_box-bot.jpg! !{width:50%}rj45_jumper_box-with_cables.jpg! h2. Hardware v2 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. !{width:50%}rj45-pcba.jpg! h2. Hardware v1 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. !{width:50%}rj45_jumper_box-top.jpg! !{width:50%}rj45_jumper_box-bot.jpg! !{width:50%}rj45_jumper_box-with_cables.jpg! h2. Design files The PCB design files are available at https://gitea.osmocom.org/electronics/osmo-small-hardware/src/branch/master/rj45-jumper-box h2. Availability It's OSHW, so you can build it yourself based on our design files published above. If you prefer a fully assembled product, "sysmocom":https://sysmocom.de/ is offering fully assembled kits in their webshop at https://shop.sysmocom.de/RJ45-Jumper-Box/rj45-rp-kit
