added display option to bill of materials

docs/BOM.md

@@ -11,7 +11,7 @@ type: default
 | **Model** | PCAN-USB |
 | **USB ID** | `0c72:000c` |
 | **Purpose** | USB-to-CAN adapter for reading car CAN bus traffic |
-| **Interface** | SocketCAN netdev (`can1`) |
+| **Interface** | SocketCAN netdev |
 | **Default bitrate** | 500 kbps |
 | **Driver** | PEAK proprietary driver 9.2.0 (netdev build) — out-of-tree module, must be rebuilt after kernel updates |
 
@@ -20,9 +20,12 @@ type: default
 - The mainline kernel driver `peak_usb` is not compiled into the NVIDIA Tegra kernel (JetPack r36.4), so PEAK's proprietary driver is required.
 - Must be built with `NET=NETDEV_SUPPORT` for standard SocketCAN tools (`candump`, `ip link`, etc.).
 - The module lives at `/lib/modules/$(uname -r)/misc/pcan.ko` and is loaded via `modprobe pcan`.
+- Jetson Orin Nano has built-in `can0` (exposed by GPIO pins), so any extra CAN interface should enumerate from `can1`; but this is only heuristic and should not be trusted.  
 
 ## Waveshare SIM7600G-H-M.2
 
+[hat](https://www.waveshare.com/wiki/SIM7600G-H-M2_4G_HAT) [module](https://www.waveshare.com/wiki/SIM7600G-H-M.2)  
+
 | Field | Value |
 |-------|-------|
 | **Manufacturer** | Waveshare (SIMCom SIM7600G-H-M.2 module) |
@@ -49,3 +52,19 @@ type: default
 - M.2 B KEY is **not** mechanically compatible with Mini-PCIe.
 - Supply voltage should be ~4.0 V for reliable operation.
 - DO NOT hot-plug while powered.
+
+## Waveshare SIM7600G-H-M.2
+
+[link](https://www.waveshare.com/wiki/4.3inch_DSI_LCD)
+
+| Field | Value |
+|-------|-------|
+| **Manufacturer** | Waveshare |
+
+### Required software
+
+research pending  
+
+### Notes
+
+TBD