Hey, so I have a new powerbank and I have noticed that pb that are a few years old with smart output only shut off if there are no current draw. However this new is different and I am thinking that it needs a signal to data pins, I have looked around and cannot find anybody with the same issue.
I am trying to power an arduino project where I solder + and- to an arduino and a device that draws 1.6A. Everything is working if I turn the owerbank on but after one minute it shuts off. Since I draw 1.6A I know that the standard smart output is not the case... So I wonder if someone knows how to get around this, and in best case make it to shut off when not any current is drawing from the battery.
Paul_KD7HB:
It is likely to be something with the actual power bank you are looking at. So, why not tell us what you are looking at.
Paul
Well, as said before it is a powerbank 5v 2.1A that I power a project with (If using other powersuply it works fine). I have come to conclusion that I have to manipulate that when a button is pressed to the arduino the powerbank get signal to still be on. I know there are some get arounds if you have to little draw of current that the powerbank shuts off but in this case it is not and I want the autoshut off when the project is not running. I don't know what more info you want?
maker-20_:
Well, as said before it is a powerbank 5v 2.1A that I power a project with (If using other powersuply it works fine). I have come to conclusion that I have to manipulate that when a button is pressed to the arduino the powerbank get signal to still be on. I know there are some get arounds if you have to little draw of current that the powerbank shuts off but in this case it is not and I want the autoshut off when the project is not running. I don't know what more info you want?
Some technical information about your power bank just MIGHT answer your question.
Paul
Here is close up on the powerbank. 5V 2.1A output port on the USB port nearest the small inductor (the USB A), that is where I want to use the output. I have tryed to solder it ang I get it to work but it is shuting off, since I have current draw on 1.6A there is not that sensor system...
Does the powerbank work properlyt charging a phone, when charging using a charging only cable (one that does not make your phone present itself to a computer when connected that way)?
Does the powerbank work properlyt charging a phone, when charging using a charging only cable (one that does not make your phone present itself to a computer when connected that way)?
Since it is a powerbank I do not have datasheet!
It is working while charging with a phone, Iphone lightning. I can see if I get it to power something with USB A to microUSB without datapins.
It's the minimum draw requirement situation -- some work like this, some do not.
I made a replacement garage door remote control using one (that does) and a NodeMCU. I activate it, open/close the door and it then, conveniently, turns itself back off.
runaway_pancake:
It's the minimum draw requirement situation -- some work like this, some do not.
I made a replacement garage door remote control using one (that does) and a NodeMCU. I activate it, open/close the door and it then, conveniently, turns itself back off.
I have one that wakes up whenI press the chrge status button which illuminates the four status leds. I can then use it to charge my phone and
when the phone is charged it goes back to sleep.
There are a number of charger types which allow the device to be charged (usually a smart phone) to negotiate a higher charging voltage using a special protocol.
It may be that your power bank, at least on some outputs, is expecting such an intelligent device.
5V at 2.1 amps is not quick charge, that’s bog standard.
The OP has things backwards. That device Is probably the old Apple standard where the powerbank outputs a voltage on the data pins that signals what current can be dawn from the supply. Easy to confirm by measuring D+ and D- to GND and comparing details to the link below.
Hm, After cutting a charging cable I see that it DOES NOT use any datapins at all… So what can it be when I am drawing 1.6 A (tried to draw maximum 2.1A to) from it and still not keeping alive? I have tried to put a mosfet so that I have a 150R (also tried 50R) between + and - when the arduino is on as many “keep alive” tutorials show, still no luck… Why does it work when charging a phone but not powering my project? Any thoughts?
Interesting and might be a clue is that if I connect my LED:s that I am powering that draws exactly 1.466A the battery is alive, so it is something when I am using the arduino that it does not care about…
I can even power less amount of LED:s that draws about 400mA and it still goes on. When powering with the arduino it does not go on. Strange…
