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Dagu 4 channel motor driver fried

Hi,

I have fried my 4 channel motor driver and don't know how this can happpen. As you can see in the picture the Dual FET IC  U10 for motor 4 is blown away. This happened during a first test of my IOIO-SHR v2 robot. Before connecting the motor driver the program has been tested with an oscilloscope, all Outputs are working as expected. All connections has been double checked. Power supply testet with an voltmeter. Each PWM pin can be controlled from the Android phone with a Slider of my test app. PWM frequency was 1kHz.

IOIO-SHR version 2 sneak preview

Started this weekend with the 2nd version of my IOIO-SHR (Start Here Robot). Because Santa brought me a Rover 5 chassis on christmas, this would become the chassis for it. I got the 2WD version including wheel encoders and the motor controller board.

Here are some shots from the assembly test.

The IOIO is mounted on a carrier board with 3 pin headers for all IOs. Some Jumpers are available to select the supply voltage for the IO headers, 3.3V, 5V from the IOIO or external servo voltage.

Introduction: The IOIO-SHR is my first attempt in using Java to program a robot. Using a Sparkfun IOIO board to control the hardware and an Android phone as the … Read more

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FezBridge - Android Debug Mode meets Fez Domino

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Android Open Accessory DIY DemoKit

At the Google I/O 2011 the new Android Open Accessory Development Kit (ADK) has been published. This allows to connect Accessorys to your Android phone and communicate between the Accessory and the Android via USB. The Accessory has to implement an USB Host, while the Android acts as a USB client.

Robot 'Justin' Catches Balls Tossed in its Direction

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Navigate around via ultrasound
Using a
Introduction: MASHR is my attempt to build a start here robot for beginners. It is Arduino based, but didn't use a standard Arduino booard. An Romeo all-in-one … Read more