DSLR Controller on Motorola Atrix 4G

Confirmed configuration for DSLR Controller working on Motorola Atrix 4G.

 

Key requirements include:

- Atrix 4G running Gingerbread, rooted and davlik heap size increased to 128MB

- micro USB OTG cable

- 5V USB portable power supply

- USB Y cable for external hard drives

 

Based on observation, the Atrix 4G is capable of operating as a USB host but due to a combination of HW and/or SW unable to source 5V which is required by a USB device to successfully complete the USB physical connection. The 5V USB portable power supply helps to satisfy the USB specification requirement of supplying 5V on behalf of the Atrix 4G.

 

Since the 5d2 has its own battery, its current drain on the power supply is negligible or zero. Instead, the 5V is used as a logic signal for the 5d2's USB component to properly detect connection of the USB host - the Atrix 4G.

 

In the case of the Atrix 4G, the micro USB port is used not only for USB communications but also as a charging port. The Atrix 4G will recharge its battery so long as the 5V USB portable power supply can meet the current sourcing requirements.

 

Lastly, this setup must be powered up and connected in the following sequence to ensure DSLR Controller detects the camera:

1. Connect all cabling to each other and the power supply, do not connect to camera or phone

2. Turn on power supply

3. Connect to phone

4. Connect to camera

5. Start DSLR Controller

Done