Hi guys,
i have started migrating some of my projects from arduino to ESP and everything is great so far, there is just one thing i didnt manage to solve yet.
My project is using the devboard and I am trying to debug using the built in usb port, but it has an external power source (LM2596 on the 5V port).
According to the documentation, i understand I can´t connect my USB cable while using this power source, but the issue is that the power source is welded to the PCB, so i cant just disconnect it.
The first solution i found is to wire TX/RX/GND and use it to debug, but it is not a great solution really, because if i try to update the code during debugging i need to break everything again, change cables, turn off the board, and is not as smooth as i wish it was.
Can someone please help me out to find a way to use the usb port for debugging?
thanks!
Debug while on external power souce
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- Posts: 826
- Joined: Mon Jul 22, 2019 3:20 pm
Re: Debug while on external power souce
Use a separate uart->usb adapter (https://www.amazon.com/HiLetgo-CP2102-C ... 00LODGRV8/) or make a usb cable without power.
As long as you have stable power sources, it shouldn't hurt anything to have 5V running from both sources.
As long as you have stable power sources, it shouldn't hurt anything to have 5V running from both sources.
Re: Debug while on external power souce
thanks, i have one of those, but as i am using a display on the TX/RX, the idea to remove power from the usb cable is more suitable to me, thanks!
anyway, would there be a way to make it via components on the board? maybe a diode on the vin?
my main concern is actually damage the computer, of course..
anyway, would there be a way to make it via components on the board? maybe a diode on the vin?
my main concern is actually damage the computer, of course..
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- Posts: 826
- Joined: Mon Jul 22, 2019 3:20 pm
Re: Debug while on external power souce
Yeah, a low voltage drop schottky diode should work if this is not intended to be a primary mechanism and you want to be confident nothing can damage the computer.
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