ESP8266 Community Forum

- Sun May 22, 2016 12:34 am #47793 I tried many tests :

1. I connected my esp to external power, the blue light stays on, I start getting garbage data. I used voltage regulator which was giving 3.4v, power supply tested with 1A & 2A.

I used http://www.ebay.com/itm/1PCS-Board-MB10 ... xy1RZSY9yF


2. I used 5V 2A supply with 3A DC-DC Converter Step Down buck . http://www.ebay.in/itm/Supper-mini-3A-D ... Swt7pXNFQz

Still no response - whatever i send it echoes it back.


If i connect directly to arduino using arduino pins only it behaves fine.

- Mon May 23, 2016 5:35 pm #47906 Hello - could you show your wiring?
The ESP modules will require appropriate boot setup - as per the Instructables GPIO0 High and GPIO2 High to boot from the internal flash. Uploading a program will require GPIO0 Low.
How do you communicate with the module?
What speed do you use?
What serial monitor do you use and what config?
Have you flashed the module with any alternative software?

- Mon May 23, 2016 11:18 pm #47911 Hey !

-I got a external power adapter & connected GND, VCC to ESP. Directly, So diagram turns somethings similar to below but not powered by arduino
https://raw.githubusercontent.com/mrizv ... sp8266.png & also tried only adding a register of 200ohm on `ch_pd`

I also tried http://blog.filipeflop.com/wp-content/u ... SP8266.png in past but then i was betting garbage data not echo.

But when i follow only this schematics ie. not using external power source - it works well with arduino.



Right now both GPIO0 & GPIO2 are not connected. & they work if i connect directly to arduino.

I flashed using FLASH_DOWNLOAD_TOOLS_v2.4_150924 & firmware esp_iot_sdk_v1.5.0_15_11_27

I removed arduino IC from my arduino UNO, Connected RX & TX.

I am using arduino serial monitor only with baudrate 9600 as i changed baud rate of esp using AT+CIO or AT+IPR or may be something different i don't remember exactly.

No i haven't tried anyother firmware or tool.