wroom-32u mod

AntennaModNew.md

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+# Add an antenna the easy way
+
+You can exchange the stock wroom-32 for a wroom-32u with built-in ipex/u.fl connector.
+
+## Materials
+
+- **WROOM-32U Module**  
+  - Available on [AliExpress](https://www.aliexpress.us/item/1005006566368554.html) or [Amazon](https://a.co/d/2cFy1Jf)
+- **SMA Antenna**  
+  - Suggested: [Amazon Link](https://a.co/d/41h6VpV)
+- **UFL to SMA Adapter**  
+  - [Available on Amazon](https://a.co/d/7glUbBC)
+- **Flux**  
+  - [I like Amtech](https://northridgefix.com/product/amtech-nc-559-v2-tf-flux-10ml-syringe-plunger-2-needle-sizes/)
+- **Solder Paste**
+  - [I use Mechanic](https://www.aliexpress.us/item/1005007333777376.html)
+- **Hot Air Station**
+## Procedure
+
+### Step 1: Preparation
+
+1. **Setup**: Clean your workspace. Secure the board to prevent movement during the process.
+2. **Flux**: Liberally apply flux around the ESP-WROOM module. Struggling? Use more flux.
+
+### Step 2: Module Removal
+
+1. **Heat Application**: Set the hot air station to approximately 350-400°C. Apply heat evenly across the module to avoid damage to adjacent components.
+
+   ![Heat Application](https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display/blob/master/img/8.JPG)
+
+2. **Remove the Module**: Once the solder is molten, carefully lift the ESP-WROOM module using tweezers. If it resists, apply additional heat as needed.
+
+    ![Remove the Module](https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display/blob/master/img/9.JPG)
+
+4. **Clean the Pads**: Add solder to the esp pads on the CYD, use solder braid to remove it, clean with IPA, and then lay down solder paste.
+
+    ![Clean the Pads](https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display/blob/master/img/10.JPG)
+
+### Step 3: Install the WROOM-32U
+
+1. **Position the Module**: If you don't use solder paste simply ensure correct alignment and solder a pin at each corner. 
+2. **Hot Air**: If you chose the hot air route, apply heat evenly until the paste flows. After the initial set, apply more heat and give the module a tap with tweezers ever so slightly for to it seat fully.
+3. **Inspect the Joints**: Thoroughly inspect the solder joints for any defects such as cold joints or bridges. A microscope is invaluable for this and many other challenges you'll face.
+
+  ![New module](https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display/blob/master/img/11.jpg)
+
+### Step 4: Reflash Marauder
+
+1. **CYM WebFlasher**:
+   https://fr4nkfletcher.github.io/Adafruit_WebSerial_ESPTool/
+
+### Step 5: Attach the Antenna
+
+1. **Select an Antenna**: Choose an appropriate antenna for your application. Recommended options are available on [Amazon](https://a.co/d/41h6VpV).
+2. **Connect the Antenna**: Attach the UFL to SMA adapter to the WROOM-32U, then connect the SMA antenna.
+3. **Test the Board**: Power on the board and have fun. Don't be a dick!
+
+    ![Alfa](https://github.com/Fr4nkFletcher/ESP32-Marauder-Cheap-Yellow-Display/blob/master/img/12.jpg)
+