Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By Shreyans Jain
#79267 I am working on a project using NodeMCU v2 Development board. The problem is there is a very small IC(S4) on the board which heats up a lot. I am unable to understand why that particular IC gets heated.
I need help understanding what is that IC and what it does.
Any help is appreciated.
ic s4 on nodemcu.png
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