Arduino Due heating up and dies after connection 4 or more RPR220 lightsensors.

Other Hardware Motors, Mechanics, Power and CNC
1

Dear forum members,

I have a problem with an Arduino Due. When I connect a VNH5019 Motor Driver form Pololu in combination with 4 or more RPR220 lightsensors, the Arduino board instantly fries. The IC gets untouchably warm and the status lights slowly fade away. After 3 attempts to start the Arduino, all light is gone (when connecting to USB) and the Arduino is not recognized anymore. Also, after the Board is fried, Analog pins 4 en 5 are shorted with eachother AND the Ground and 5V ports. When I tried to use a VNH5019, the same things happened and the PWM port was shorted to Ground.
I will attach a simple diagram showing the connections. What am I doing wrong??
One 5V port is connected to ALL RPR220s and 2 VNH5019 (same goes for Ground).
I already fried 5 (!) Due boards due to this problem.

Thanks in advance.

EDIT: This ONLY happens when I use a 11.1V battery connected throught VIN and GND. When using USB power I can use more than 7 RPR220s at the same time.

Arduino Dead.jpg
Arduino Dead.jpg2301×2241 311 KB

2

When you read the how to use the forum sticky it will tell you
not to cross post!!!

3

Make your drawing an appropriate size so it can be seen.

Running the arduino at a high supply voltage, like 11+ volts, is not a good idea. The voltage regulator has to waste more heat to reduce the voltage from 11 to 3.3V, than it does from a lower voltage such as 7 volts to 3.3V.

4

Your diagram there for the VNH5019 seems to be completely different to the diagram at the pololo website.

You need to be careful. There is an input for the motor power supply source +ve connection labelled Vin. And another connection for the logic level power supply labelled Vdd. Do not mix these up.

5

Your drawing shows the +ve side of the battery connected to ground, and the -ve side to Vin .

Did you actually do this ?

More than five times ?