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README.md

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+# ESP32 C-ITS Receiver
+
+This repository contains the hardware design files for the ESP32-C5 C-ITS receiver.
+
+[Production files (Gerber, BOM, CPL) can be found in the releases section](https://codeberg.org/opentrafficmap/its-g5-receiver/releases)
+
+## PCB design files
+The PCB is designed in KiCad. 
+
+Main components:
+- ESP32-C5-WROOM-1 (i.e. ESP32-C5-WROOM-1-N16R8 or ESP32-C5-WROOM-1-N8R8)
+- KSZ8851SNL SPI to Ethernet IC
+- TPS2378DDAR for 802.3af/at compliant active PoE
+- isolated DC-DC converter with 7 V - 58 V input on active/passive PoE
+- microSD slot
+- 2x USB-C connector for JTAG and UART
+
+
+### Changelog and Errata
+
+Revision 2:
+- Add jumper for active 802.3 PoE or passive PoE
+
+Revision 1:
+- Initial release
+- Errata:
+  - 9.1k Resistors R44 and R45 need to be unsoldered from the PCB
+  - Passive PoE with less than 48 V needs Pin 4 and 5 of U8 bridged
+
+## Case design files
+
+The case consists of 4 parts and is designed in openSCAD.
+
+We usually print them in ASA, which should offer good UV stability.
+
+
+## 3D rendering:
+
+![PCB Revision 2](docs/pcb_rev2.png)
+
+![PCB Revision 2 Back](docs/pcb_rev2_back.png)
+