luzik Posted December 11, 2014 at 11:08 AM Share Posted December 11, 2014 at 11:08 AM There is no 5V input on master brick "Step-Down Power Supply brick" work only with 6-30V voltage. In my project i use 5v supply, Can i connect my 5V PS in to "Step-Down Power Supply brick" 5v output to supply master brick without connecting 6-30V in ?? Quote Link to comment Share on other sites More sharing options...
raphael_vogel Posted December 11, 2014 at 12:23 PM Share Posted December 11, 2014 at 12:23 PM There is a 5V input for the Master Brick. It's the mini USB connector on the brick. Use an USB cable, cut one end and use the red (+) and black (-) cables to connect to your 5V power source. Step-down needs 6V at least. Quote Link to comment Share on other sites More sharing options...
luzik Posted December 14, 2014 at 05:27 PM Author Share Posted December 14, 2014 at 05:27 PM But the question is: Can I put 5v from external PS into "Step-Down Power Supply brick" OUTPUT without providing anything to INPUT and power other stacked bricks in this way? The problem is that i don't want to power it via usb. Quote Link to comment Share on other sites More sharing options...
raphael_vogel Posted December 14, 2014 at 06:17 PM Share Posted December 14, 2014 at 06:17 PM Maybe I completely miss what you really want, but... Can I put 5v from external PS into "Step-Down Power Supply brick" OUTPUT No, as the name OUTPUT already indicates, it's an OUTput. An your other statement There is no 5V input on master brick is wrong. As I said you can run the master brick without any Step-Down Power Supply! Use the mini USB connector on the master brick for supplying it with 5V. Quote Link to comment Share on other sites More sharing options...
luzik Posted December 14, 2014 at 09:57 PM Author Share Posted December 14, 2014 at 09:57 PM I know that output is for output purposes but! i want to know if it can be used as input to power up whole bricks stack. I want to use "Step-Down Power Supply brick" only as 5v connector. Maybe it is more clear now what i want to achive. Quote Link to comment Share on other sites More sharing options...
remotecontrol Posted December 15, 2014 at 07:27 AM Share Posted December 15, 2014 at 07:27 AM No, as raphael_vogel already mentioned, you can't use the step-down for 5V input (green jack). This would also be a quite expensive solution: why buy a step-down and supply this with 5V if you can do the same without step-down? You can supply one brick with 5V via USB connector (see remark from raphael_vogel) which powers the whole stack then, not just that one brick. Quote Link to comment Share on other sites More sharing options...
borg Posted December 15, 2014 at 09:41 AM Share Posted December 15, 2014 at 09:41 AM Actually, with the currently available Step Down Power-Supply you can attach a 5V supply to the green connector, as long as you connect nothing to the black connector. Since we want to protect the stack against accidentally connecting to the wrong connector in the future, this will not be possible in the next version of the Step Down Power-Supply. (Accidentally killing a whole stack because you connect 24V to the green connector instead of the black is currently one of the most painful things that can happen ) Quote Link to comment Share on other sites More sharing options...
luzik Posted December 15, 2014 at 10:40 AM Author Share Posted December 15, 2014 at 10:40 AM Thank you. Quote Link to comment Share on other sites More sharing options...
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