ESP8266 Community Forum

Hi,

I just received 8 ESP-01 from China.

I ordered it together with some DHT11 boards to work together. I also ordered a two USB to serial adaptors to program. One I adjusted with little soldering to get the ESP-01 in programming mode.

Everything went fine with the Arduino software.

I can upload the sketch and everything.

But:
I noticed that I got two types. (I got 4 of one type and 4 of the other) One is working and one is not.
See picture, the left one in the picture is working. It has two LEDS, a red one and a blue one.
The right one is not working. It has only one LED. I can upload a sketch. While I do, the blue led is blinking.

Afterwards, Nothing is connecting to my WiFi. While de left one is connecting perfect.
I even get the right values from the DHT11.

Is there something I have to do different with the left one?

Kind regards,

Netice

Case closed. I figured it out.

The one with the single LED on it needs to be flashed with SPI mode set to DOUT. The one with two LED needs SPI mode set to DIO.

After I set the correct SPI mode. Everything workt perfect.