I have an ESP12F that I programmed with USB-TTL from the Arduino IDE.
The wire setup when a program is running:
While on GPIOs of ESP12F:
When I touch the ESP12F, I feel my thumb gets warm and it feels like ironing temperature. I dont have a thermometer, so I just tell what I feel.
What I'm afraid of is that this hot state is indicating a short circuit, but I'm sure there's no short there. If shorted, the blink program wouldn't blink, and it's blinking. I'm not using any resistor for it, I'm just connecting directly using a cable jumper.
Or should I think that hot is normal? Due to current that stuff needs?
Also I wonder if the GPIOs on the ESP12F are 5V tolerant. I have read many articles, they have different questions that make me confused.