ESP8266 Community Forum

- Wed Mar 04, 2015 2:19 pm #11298 Hi,
I have now 3 Esp8266: Esp-12, Esp-201 and the last one it's Esp-01. For the power supply i use a MB1025(http://fr.aliexpress.com/item/Breadboar ... 34407.html), I have no problems with the Esp-12/Esp-201
When i started to use the Esp-01 all was good, but for test different code i installed and removed many times the firmware for lua, and now i can't have a reply from the device. It's connected like that:


Here is a vidéo for show what's happen:
[youtube]https://www.youtube.com/watch?v=4jSdHtG74fo[/youtube]
The Esp-01 seems to works but there is no reply, i show only 1 program but i tried with 3 others one, and everytime i see the blue led to go on when i send data but nothing come from the esp-01. I tried with different UART :/

Do you have an idea for solve my problem ?
Thx !

Last edited by Raoulos on Thu Mar 05, 2015 4:08 am, edited 1 time in total.

- Thu Mar 05, 2015 12:59 am #11340 UART is perfect, but there lacks the proper power source. FTDI on chip LDO has maximum current of 50 mA only. This draw, which they all follow, is simply wrong.

- Thu Mar 05, 2015 4:03 am #11345 Hi,
Thx for your reply, the draw is just for show the Tx/Rx and ground(and for flash) connection but for the power, i use a MB1025 connected to a 12v 2a power supply i think it's enough, no ? The others Esp8266 works like that, and the esp-01 worked with this setup : (.

- Thu Mar 05, 2015 5:54 am #11348 O.K. Do you have connected external pull up resistor on RST and GPIO2?