Part Number:DLPDLCR2000EVM
Hello,
I purchased a DLPDLCR2000EVM Cape (Cape) and a BeagleBoneBlack Wireless (BBBW). Both new out of the box merchandise. I am using a mean-well 40A 5V power supply with 5.5mm pigtails to provide power to the BBBW and the cape..
When the cape is disconnected from the BBBW, and connected to the power supply, the cape immediately springs to life and displays the splash screen (temp, security, whatnot). While disconnected, the BBBW works as well.
But once connected, the cape shows no signs of life -- no LEDs light, no display is shown. The BBBW still appears to function, and i2cdetect shows the memory locations 0x54-0x57 responding, but nothing else.
This has all the hallmarks of a power problem, however I am powering the BBBW and the cape from wires connected to the same pins on the same supply -- so they should have identical ground references. Additionally, I've tried multiple pigtails and multiple configurations to no avail. They work independently, but not together.
What's going on, and what is the best place to start troubleshooting?
Thanks,
Mark
Writer/Technical Editor
AllAboutCircuits.com