Hi, just a quick update. I have now resolved it. I've rearranged the circuit and it just worked perfectly fine. Probably the issue prior was it needed to have fewer wires to make sure the current would provide enough.

When you power it from the batteries do you get 3.3v on the 3.3v pin? Is EN and GPIO0 pins high ? did you try pressing the reset button after you connect the batteries. Update: Yes, 3.3V are measured in 3.3V pin EN pin is high (previously it was connected to the GND) and GPIO0 is high. both in 3.3V...

When you power it from the batteries do you get 3.3v on the 3.3v pin? Is EN and GPIO0 pins high ? did you try pressing the reset button after you connect the batteries. Yes I get 3.3V on the 3.3V pin. EN pin is connected to the GND pin. How do I check if EN and GPIO0 are high? Yes I also tried pres...

Likely solution, in that case: wire an 10uF capacitor between your EN and GND pins. The power supply is likely coming up slower than the duration of the reset signal as generated by the on-pcb RC network, leading to issues. I did that. The ESP boots and the AP is visible, but I can't connect to ESP...

My power source is from LiPo batteries connected in parallel (3.8V, around 6A using multimeter). Then I connect this to a step-up booster converter (bought from Amazon - DCV-R43 MT3608 LM2577 DC-DC Boost Converter Voltage Regulator Step Up Power Supply Module) to reach 5V. The output current from th...