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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

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

  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

  3. 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

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

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.

  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