ESP8266 Community Forum

- Tue Feb 24, 2015 10:59 am #10605 Hello everyone ,
I have a weird problem ... Normally my ESP01 works like a charm , I can communicate with it , send AT commands , get responses back .... but somehow and sometimes , when I power it up , its red led and the blue led flashes then the both of the leds turn off ... Sometimes I just get a very very small amount of bright red light from the red led and it gets too hot ... This happens when I try to control it via a PC or an MCU , it doesn't matter to what it connected ...

Here is how I made my connections of the ESP8266-01

CH_PD ----> VCC
GPIO1 and GPIO2 ----> VCC
RESET ----> VCC

and the RX is connected to TX of a controller
TX is connected to RX of a controller ...

This is really annoying ... I'm trying to build something very efficient and stable ... Not something that crushes unexpectedly ...

Thanks in advance for your answers ...

- Tue Feb 24, 2015 11:23 am #10607 My experience with the ESP-01 has been to only tie CH_PD to Vcc. Leave the others floating.

- Tue Feb 24, 2015 2:18 pm #10614 Vcc? where from? If this is from the USB Serial Bridge is it 3v, can it supply enough current? These need a stable 100-300mA at 3v, best to use 3V low dropout regulator powered from the USB 5v........also no need to put extra current into the ESP leave GPIO_0 AND GPIO_2 floating.......

- Tue Feb 24, 2015 4:34 pm #10623 Well , I power the circuit up from a standalone power supply made of LM317T and common grounded with a USB Serial Bridge ...

If "floating" means non connected , I rebuilded the circuit on board and left , GPIO.0 GPIO2 non connected and tied CH_PD to VCC and the RESET is non connected too ... The result is still unsuccessful ....

Where do I go wrong , why my ESP has its way .... ?