This project allows you to control a smart phone or audio device that has Bluetooth (BT) capabilities, playing to a speaker installed inside a shower.
Step 1: Amplifier
Build a mono amplifier. Mount on a single gang face place with volume control. This volume control will be rarely used as the BT device can also control volume.
Step 2: Power Supply
Insert adapter with additional recepticle into light socket. Important, replace standard light with LED type to reduce heat. Install power supply (PSU) inside ceiling.
Step 3: Install Equipment
Install the PSU, amp and speaker into ceiling. A mud ring can be used to secure face plate to drywall. Install hook to support BT device.
Step 4: Connect BT Device
Install BT device into small plastic bag to protect against water damage. The BT device used here is a Jabra BT3030. Connect to amp.