There are many charging and speaker docks for Apple devices in market when compared to Android or Windows devices. So i have come up with a design of dock which will work with both android and windows devices. Also, this will double up as computer speaker with a flip of switch. An IR Remote makes interaction with the device easy.
Step 1: Demonstration of the Working of the Dock
The demonstration of the dock is shown here.
Step 2: Full Construction Video
The video takes you through the materials required, circuit explanation and assembly process.
Step 3: Materials Required
Link for items:
DPDT Switches: www.ebay.ie/itm/201543920619
Audio Amplifier: www.ebay.ie/itm/201543920619
Micro USB Female: www.ebay.ie/itm/201543920619
Micro USB Male: www.ebay.ie/itm/201543920619
USB Sound Card: www.ebay.ie/itm/201543920619
Multimedia Remote: www.ebay.ie/itm/201543920619
Step 4: Circuit
The diagram shows how the dock was wired. For a video on explanation click on the link https://www.youtube.com/v/ilfRvNxpXj4?start=109&end=324
Step 5: Enable Audio Through USB on Android
Audio through USB should be enabled before using the dock. The video explains the process of enabling audio through USB.
Step 6: Instructions for Use
Once you enable audio through USB, the dock is ready for use. It can be used in speaker mode connected to computer and at the same time charge the android device. It can be used in dock mode without external cables.
Turn off the main switch connected to Micro USB female when using in standalone dock mode. When changing from speaker to dock mode, remove the android device, change it to dock mode and insert it back again.
If you have any suggestions for improvements kindly mention them in comments..