Propeller Mini and 5 Volts
I recently put together a project where I have a Nextion 5 volt display that I am driving with the Propeller Mini board.
The problem I was having is that the Propeller Mini 5 volt power supply is too small to drive this display. This means I need a dedicated 5 volts just to power the display and other power supply larger than 7 volts to drive the Propeller Mini. This seemed ridiculous.
Now the other thing is that I have several 5 volts USB adapters laying around from various phones and devices that I no longer use. Why can't I just use one of those to power this project. Maybe I can get some value out of those old adapters.
So the ideal solution would be to replace the 5 volt LDO on the Propeller Mini with a USB plug. Then I could just plug in my USB adapter and power the display and the propeller.
Well it turns out that the Nextion display comes with a USB adapter that breaks out just the 5 volts. I then soldered on two wires to this adapter and also soldered the two wires to the 5 volts and ground pins on to the Propeller Mini. This bypasses the 5 volt LDO and gives me enough power to drive the display and the Propeller Mini.
Now I could as well have used the barrel jack cable they sell and added a barrel plug to my project but that would mean I have to purchase extra hardware to convert everything just to get to 5 volts.
Maybe Parallax need to sell a USB adapter board that breaks out the 5 volts so that if 5 volts is needed for a project that a option exists.
In any case I now have one less 5 volts adapter laying around collecting dust.