update the quickstart - explain the wiring on SSC30KQ + EU2 example

Author: koriaf

src/content/docs/use-cases/fpv/-quick-start.md

@@ -51,10 +51,11 @@ This guide is designed to provide a detailed walkthrough for setting up an FPV (
 
 #### Step 1.1: Flashing the Camera
 
-- **Connection Points**: Identify the UART connection points on the camera board.
+- **Connection Points**: Identify the UART connection points on the camera board. Some people solder wires to them, some just use needles, glue and common sense.
   ![Camera Pin out](/src/assets/images/sbs-Camera-Pinout.jpg)
 - **Using FTDI Adapter**: Connect the camera to the FTDI adapter for console access.
 - **Flashing Process**: Use console commands to flash the OpenIPC firmware onto the camera.
+- [Flasing guide for SSC30KQ camera](https://www.youtube.com/watch?v=D5aG6JqW5qA)
 
 #### Step 1.2: Setting up Serial Terminal Emulation
 
@@ -86,11 +87,22 @@ This guide is designed to provide a detailed walkthrough for setting up an FPV (
 - Connect WiFi modules to the camera and groundstation.
 - Use BECs to regulate voltage for the WiFi modules.
 
-> **Note:** Ensure proper soldering and connections for stable operation. Always attach antennas to the WiFi modules before powering them on.
+For example, if you use SSC30KQ as the camera SOC and BL-M8812EU2 as a network card, you need:
+* Single or multiple BEC for your target battery voltage to power both the camera and the network card (they work from 5v), common options are mini560 for batteries up to 4s or mini560pro for 6s. Add high-quality low-ESR capacitor to the output of the BEC (for example genuine Panasonic, they are not so expensive), use twice the BEC voltage (10v), capacity 200-300, can have two parallel. Having a capacitor increases signal quality a lot (due to complex wifi modulations being sensitive to the input voltage quality). If one BEC can't handle the current then use separate ones, test the current consumed by your setup with a current meter or smart charger.
+* Use the two pins (GND and 12V) on the camera from the big ethernet+power connector to power it (analog camera cable works just fine).
+* Solder 3 cables to the USB pad (or use the socket if there is one) - GND, D+ and D- and connect them to the GND, D+ and D- on your wifi card (see the card wiring, it's 2, 3 and 4 pins there for EU2). Connect GND to GND, D+ to D+, D- to D-. Twist the wires well.
+* Make sure you have the antennas connected.
+* Power the WiFi card from the same (or separate) BEC, use pins 6 and 7 for +5V for the EU card (they are equal, you can use one or two positive and one or two ground wires to be safer), connect the grounds, twist the wires.
+* Add a heatsink to the wifi card, then either add a small 30x30 fan to the heatsink or use bench fan if you mount it on the drone where it gets cooled by the air. The wifi card gets really hot even on minimal power, on high power it gets destroyed very quickly without any protection. You glue the heatsink to the back side of the board (one with many square ground pads), not to the one with the ground cage. Don't power it on without a heatsink.
+* Check the whole system for shorts, check if the antennas are connected and power it on. Assuming you have already configured it (channel, bandwith, codec) - you should see the signal on your GS now. Monitor the system temperature, cool if needed.
+* For the telemetry use second UART pins (usually AF_RX & AF_TX), connect them to the FC (RX->TX, TX->RX) and configure the port to output MSPOSD or MSP+DisplayPort - it should be working from the box.
+
+> **Note:** Ensure proper soldering and connections for stable operation. Always attach antennas to the WiFi modules before powering them on. Do not overheat.
 
 ### Step 3: Generating and Installing the Key Pairing for WFB-NG
 
-- Generate encryption keys using the `wfb__keygen` command.
+- Currently both groundstation and vehicle side firmware have the same default key set, so you don't have to generate your own for it to work from the box.
+- If you want your own encryption keys - generate them using the `wfb__keygen` command.
 - Transfer the `drone.key` to the camera and `gs.key` to the groundstation.
 
 ### Step 4: Editing wfb.conf to Set the Correct WiFi Channel