Dear all,
After several projects on the Nano I have build two project using the NODEMCU (ESP-12E):
Disconnecting the USB cable and supplying 9V from battery the Blink a LED project works fine. The Internet Radio sketch however does not start up by its own, only after pushing the RST button.
Who has an idea?
After some more experiments I notice that when I supply 9V through an USB cable into the USB-C connector of the NODEMCU it starts up correctly.
Is there something special on how the USB-C is connected to the NODEMCU board?
Who has a reliable schematic?
VUSB is 5V not 9V.
What/Which NodeMCU has a USB-C on it anyway?
Sorry typo micro USB
The Vin pin is in parallel to the power supply connector of the micro USB
The voltage regulator takes care of regulating towards 3.3V
9V is within the range of the regulator.
My question is why doesn't the board start-up when I supply 9V to the Vin pin
Somebody sent me pictures of a NodeMCU with a USB_C on it (instead of posting it here).
It has a 100uF (or is it 10, 1-0-no_mult?), 6V cap (likely a tantalum) on its input.
Is yours similarly constructed? What's the voltage there (stripe is +) ?
It is a 100uF/6V Cap....it is 16V....the 1 is printed on the white stripe
The stripe is the GND side of the cap
I have a different board lay-out with 100uF/16V
Across the cap I measure 3V3, that is quite logical
Without a shematic and board lay-out we are a bit lost
But that's not a "USB-C" you have there
That's a "USB-B micro".
Though I prefer the NodeMCU's with a CP2102, as with the preceding pic, I'm only finding schematics for those with CH340's.
Maybe there's something else going on - it's always the details.
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