Im using an breadboard power supply that gives 2 output voltages (5V and 3.3V) using a 9VDC/2A input (vía jack).
The issue is that it works, but just minutes and then the nodeMCU stop working. when is powered via USB works perfectly without stopping. You can see from the image that i have a couple more things connected , even a ESP32CAM which works pretty fine (doesnt stop). i measured the output voltage that is supplying to the NODEMCU, i get 4.8V, maybe thats the problem? maybe i have to put a higher voltage? Another aproach will be just cut the USB cable and power the system with it. Hope you can help me
This is the pinout of the NODEMCU32-S:
Ok i think the mb102 breadboard power supply only can supply 700mA, it gets very hot when is connected so i think the system wants to use more power but the breadboard cannot handle the current, what can i do to supply the power on the system if i cant use that?
Yes, but only with 6volt on the DC socket.
Current capability drops with increasing input voltage, and is only 100mA at 12volt in.
At 9volt, I expect the limit to be around 200mA, which is the average that two ESP32 boards draw.
The breadboard supply will likely cut in/out due to an overheating regulator.
Try to power one ESP with a cellphone charger, connected to the USB socket, and power the other one by joining the V-in-5volt pins.
Leo..
hmm it may work, but maybe the other one will take to much current from that 5volt Vin pin?
The overheating happens due the voltage (because is less than 5V) ? or maybe because the current taken by the esp ?
The 5volt pin is directly connected to the USB socket (through a Schottky protection diode).
So the limit is the current of the USB power supply (and ~500mA limit of that diode).
Leo..
