If I plug in my Round Display to my laptop it works!
But after I plug it into a battery pack it doesn’t work.
If I plug into an iPhone charger it doesn’t work.
I say it doesn’t work, I mean my tiny app that does nothing more than display the time/date doesn’t work.
What am I missing here? Does my laptop supply more than 5V to this thing? is there some amp or watt equation hidden in here? Electronics isn’t my thing, sorry?
Do you have the serial.begin with a while loop? That will stop your sketch starting up if you don’t plug in to a ‘serial port’ device.
Look for this code:
Serial.begin(some baud rate);
while(!Serial);
You can replace the while with a delay or something else to allow it to run even when the serial port does not initialize completly at start.
‘delay(500);’ for example.
yes… also you may need to press the reset button… the image may be on the screen but the processor is not processing… you should add a startup section to clear the screen and maybe a heartbeat led flash
