Instructions | Communicating with your Mod from Android phone

1

Step 1

The small/male/micro-B end of the cable goes in your phone, and whatever you're trying to connect goes in the big/female/USB-A end of the cable.
2

Step 2

Connect your Mod to its USB cable, plug that into the OTG cable
3

Step 3

Plug the small/micro-B end of OTG cable in to your phone
4

Step 4

Turn the Mod on, and connect to it in the Serial Monitor app.
5

Step 5

We have to force Arduino not to include any HID features. The way you do this is to edit the USBDesc.h file included with Arduino. On a Mac, this is found inside of the Arduino.app itself. From the Finder, right click on the Arduino application, and choose "Show Package Contents". From there, go through Contents > Resources > Java > hardware > arduino > cores > arduino and you'll find USBDesc.h (in the 1.5.x Arduino development environment, this file is found in Contents > Java > hardware > arduino > avr > cores > arduino).
6
Step 6
Open USBDesc.h and edit it:
Old:
```
#define CDC_ENABLED #define HID_ENABLED 
```
New:
```
#define CDC_ENABLED /* #define HID_ENABLED */ 
```
You have commented out the line defining the HID_ENABLED variable.
7

Step 7

You may have to quit and reload the Arduino app and then recompile your sketch for it to take effect.

Communicating with your Mod from Android phone